{ "schema_version": 2, "reviewed_on": "2026-10-10", "scope": "Published finished-material references; not recipes, model inputs, independent qualification, or purchase specifications.", "display_policy": "Select the current supplier webpage/chart for nominal density and depth where available. Attribute other properties separately. Preserve source conflicts; do not average them or infer chemistry, test equivalence or pressure from depth.", "conversions": { "psi_to_mpa": 0.006894757293168, "lb_ft3_to_kg_m3": 16.01846337396014, "bar_to_mpa": 0.1 }, "sources": { "ess-chart": { "title": "ESS Depth and Density Chart", "url": "https://ess.globecomposite.com/syntactic-depth-density-chart", "published_date": null, "accessed_on": "2026-10-10" }, "ess-micro-web": { "title": "ESS Microsphere Syntactic Foam", "url": "https://ess.globecomposite.com/microsphere-syntactic-foam", "published_date": null, "accessed_on": "2026-10-10" }, "ess-macro-web": { "title": "ESS Macrosphere Syntactic Foam — typical properties", "url": "https://ess.globecomposite.com/macrosphere-syntactic-foam", "published_date": null, "accessed_on": "2026-10-10" }, "ess-az-legacy": { "title": "ESS AZ grade historical technical data sheet (2021 in filename)", "url": "https://ess.globecomposite.com/hubfs/AZ-Grade-Data-Sheet-2021-2.pdf", "published_date": null, "accessed_on": "2026-10-10", "revision": "2021 in filename; no date printed on page", "verified_visually": true }, "ess-hz-web": { "title": "ESS HZ grade webpage", "url": "https://ess.globecomposite.com/hz-grade-microsphere-syntactic-foam", "published_date": null, "accessed_on": "2026-10-10" }, "ess-bluefin": { "title": "ESS Bluefin Artemis 21 case study", "url": "https://ess.globecomposite.com/case-studies-bluefin-artemis-21", "published_date": null, "accessed_on": "2026-10-10" }, "ess-mz-pdf": { "title": "ESS MZ technical data sheet", "url": "https://ess.globecomposite.com/hubfs/ESS_DATA_SHEET_MZ.pdf", "published_date": null, "accessed_on": "2026-10-10", "revision": "ESS260608", "printed_copyright_year": 2026, "verified_visually": true }, "ess-bz-pdf": { "title": "ESS BZ technical data sheet", "url": "https://ess.globecomposite.com/hubfs/ESS_DATA_SHEET_BZ.pdf", "published_date": null, "accessed_on": "2026-10-10", "revision": "ESS260608", "printed_copyright_year": 2026, "verified_visually": true }, "ess-az-pdf": { "title": "ESS AZ technical data sheet", "url": "https://ess.globecomposite.com/hubfs/ESS_DATA_SHEET_AZ.pdf", "published_date": null, "accessed_on": "2026-10-10", "revision": "ESS260608", "printed_copyright_year": 2026, "verified_visually": true }, "ess-hz-pdf": { "title": "ESS HZ technical data sheet", "url": "https://ess.globecomposite.com/hubfs/ESS_DATA_SHEET_HZ.pdf", "published_date": null, "accessed_on": "2026-10-10", "revision": "ESS260505", "printed_copyright_year": 2026, "verified_visually": true }, "trelleborg-eccofloat-web": { "title": "Trelleborg Eccofloat current product page — metric range", "url": "https://www.trelleborg.com/en/applied-technologies/products-and-solutions/buoyancy/eccofloat", "published_date": null, "accessed_on": "2026-10-10", "notes": [ "Page is undated. Metric table is labelled rest of world, not available in North America. Values are typical properties." ] }, "trelleborg-eccofloat-pdf-2020": { "title": "Trelleborg Eccofloat product sheet (2020 filename), page 2", "url": "https://www.trelleborg.com/applied-technologies/-/media/applied-technologies/en/product-sheets/buoyancy-solutions/eccofloat-2020.pdf?rev=707834ddbd864b969b35f793683c461d", "published_date": null, "accessed_on": "2026-10-10", "notes": [ "2020 appears in filename; no printed revision/publication date was found. PDF is still linked by current product page. Page 2 visually inspected. Metric table is labelled rest of world, not available in US." ] }, "base-subtec-web": { "title": "Base Materials Subtec — technical properties", "url": "https://base-materials.com/products/subtec-buoyancy/", "published_date": null, "accessed_on": "2026-10-10", "notes": [ "Undated product page. Exact formulation described only as hollow glass microspheres and novel thermoset polymer matrix." ] }, "synfoam-dw-web": { "title": "SynFoam DW — Standard Properties", "url": "https://synfoam.com/Products/SynFoam_DW", "published_date": null, "accessed_on": "2026-10-10", "notes": [ "Undated product page. Copyright year is not a revision date." ] }, "synfoam-dw-pdf-2015": { "title": "SynFoam DW Product Data Sheet — copyright 2015", "url": "https://synfoam.com/Markets/data-sheets/SynFoam%20DW%20Product%20Data%20Sheet.pdf", "published_date": null, "accessed_on": "2026-10-10", "notes": [ "Printed copyright 2015; no revision date found. One-page property table visually inspected." ] } }, "records": [ { "id": "base-subtec-2000", "vendor": "Base Materials", "grade": "Subtec 2000", "architecture": "hollow-glass-microsphere syntactic foam", "matrix": "novel thermoset polymer (chemistry unspecified)", "depth_m": 2000, "density_kg_m3": 400, "service_mpa": 19.994796, "crush_mpa": 33.784311, "crush_comparator": ">", "compressive_strength_mpa": null, "compression_basis": null, "source_ids": [ "base-subtec-web" ], "property_source_ids": { "depth_m": [ "base-subtec-web" ], "density_kg_m3": [ "base-subtec-web" ], "service_mpa": [ "base-subtec-web" ], "crush_mpa": [ "base-subtec-web" ], "crush_comparator": [ "base-subtec-web" ], "matrix": [ "base-subtec-web" ], "conditions": [ "base-subtec-web" ] }, "density_tolerance_kg_m3": null, "region_note": null, "conditions": "Maximum operating depth and pressure: 4°C. Hydrostatic crush pressure: 23°C. No test standard, loading rate, specimen geometry, or soak duration given in reviewed table.", "notes": [ "Crush value is a strict lower bound, not an equality or measured mean.", "The source says nominal density but gives no density tolerance.", "Original repository epoxy classification was unsupported; source specifies only a novel thermoset polymer.", "Service and crush pressures converted from published psi; no depth-pressure conversion used.", "No compressive strength value or geographic restriction is stated in the reviewed product page." ], "conflicts": [], "reviewed_on": "2026-10-10", "status": "published_reference", "density_basis": "nominal", "raw_values": { "depth": { "value": 2000, "unit": "m seawater", "temperature_c": 4 }, "density": { "value": 400, "unit": "kg/m3" }, "service_pressure": { "value": 2900, "unit": "psi", "temperature_c": 4 }, "hydrostatic_crush_pressure": { "value": 4900, "unit": "psi", "comparator": ">", "temperature_c": 23 } }, "density_note": "Supplier nominal density; tolerance is not stated. Operating and crush pressures use different temperatures; see source details." }, { "id": "base-subtec-3000", "vendor": "Base Materials", "grade": "Subtec 3000", "architecture": "hollow-glass-microsphere syntactic foam", "matrix": "novel thermoset polymer (chemistry unspecified)", "depth_m": 3000, "density_kg_m3": 415, "service_mpa": 30.033563, "crush_mpa": 37.541953, "crush_comparator": ">", "compressive_strength_mpa": null, "compression_basis": null, "source_ids": [ "base-subtec-web" ], "property_source_ids": { "depth_m": [ "base-subtec-web" ], "density_kg_m3": [ "base-subtec-web" ], "service_mpa": [ "base-subtec-web" ], "crush_mpa": [ "base-subtec-web" ], "crush_comparator": [ "base-subtec-web" ], "matrix": [ "base-subtec-web" ], "conditions": [ "base-subtec-web" ] }, "density_tolerance_kg_m3": null, "region_note": null, "conditions": "Maximum operating depth and pressure: 4°C. Hydrostatic crush pressure: 23°C. No test standard, loading rate, specimen geometry, or soak duration given in reviewed table.", "notes": [ "Crush value is a strict lower bound, not an equality or measured mean.", "The source says nominal density but gives no density tolerance.", "Original repository epoxy classification was unsupported; source specifies only a novel thermoset polymer.", "Service and crush pressures converted from published psi; no depth-pressure conversion used.", "No compressive strength value or geographic restriction is stated in the reviewed product page." ], "conflicts": [], "reviewed_on": "2026-10-10", "status": "published_reference", "density_basis": "nominal", "raw_values": { "depth": { "value": 3000, "unit": "m seawater", "temperature_c": 4 }, "density": { "value": 415, "unit": "kg/m3" }, "service_pressure": { "value": 4356, "unit": "psi", "temperature_c": 4 }, "hydrostatic_crush_pressure": { "value": 5445, "unit": "psi", "comparator": ">", "temperature_c": 23 } }, "density_note": "Supplier nominal density; tolerance is not stated. Operating and crush pressures use different temperatures; see source details." }, { "id": "base-subtec-4000", "vendor": "Base Materials", "grade": "Subtec 4000", "architecture": "hollow-glass-microsphere syntactic foam", "matrix": "novel thermoset polymer (chemistry unspecified)", "depth_m": 4000, "density_kg_m3": 468, "service_mpa": 39.996487, "crush_mpa": 50.676466, "crush_comparator": ">", "compressive_strength_mpa": null, "compression_basis": null, "source_ids": [ "base-subtec-web" ], "property_source_ids": { "depth_m": [ "base-subtec-web" ], "density_kg_m3": [ "base-subtec-web" ], "service_mpa": [ "base-subtec-web" ], "crush_mpa": [ "base-subtec-web" ], "crush_comparator": [ "base-subtec-web" ], "matrix": [ "base-subtec-web" ], "conditions": [ "base-subtec-web" ] }, "density_tolerance_kg_m3": null, "region_note": null, "conditions": "Maximum operating depth and pressure: 4°C. Hydrostatic crush pressure: 23°C. No test standard, loading rate, specimen geometry, or soak duration given in reviewed table.", "notes": [ "Crush value is a strict lower bound, not an equality or measured mean.", "The source says nominal density but gives no density tolerance.", "Original repository epoxy classification was unsupported; source specifies only a novel thermoset polymer.", "Service and crush pressures converted from published psi; no depth-pressure conversion used.", "No compressive strength value or geographic restriction is stated in the reviewed product page." ], "conflicts": [], "reviewed_on": "2026-10-10", "status": "published_reference", "density_basis": "nominal", "raw_values": { "depth": { "value": 4000, "unit": "m seawater", "temperature_c": 4 }, "density": { "value": 468, "unit": "kg/m3" }, "service_pressure": { "value": 5801, "unit": "psi", "temperature_c": 4 }, "hydrostatic_crush_pressure": { "value": 7350, "unit": "psi", "comparator": ">", "temperature_c": 23 } }, "density_note": "Supplier nominal density; tolerance is not stated. Operating and crush pressures use different temperatures; see source details." }, { "id": "base-subtec-5000", "vendor": "Base Materials", "grade": "Subtec 5000", "architecture": "hollow-glass-microsphere syntactic foam", "matrix": "novel thermoset polymer (chemistry unspecified)", "depth_m": 5000, "density_kg_m3": 480, "service_mpa": 50.00078, "crush_mpa": 68.947573, "crush_comparator": ">", "compressive_strength_mpa": null, "compression_basis": null, "source_ids": [ "base-subtec-web" ], "property_source_ids": { "depth_m": [ "base-subtec-web" ], "density_kg_m3": [ "base-subtec-web" ], "service_mpa": [ "base-subtec-web" ], "crush_mpa": [ "base-subtec-web" ], "crush_comparator": [ "base-subtec-web" ], "matrix": [ "base-subtec-web" ], "conditions": [ "base-subtec-web" ] }, "density_tolerance_kg_m3": null, "region_note": null, "conditions": "Maximum operating depth and pressure: 4°C. Hydrostatic crush pressure: 23°C. No test standard, loading rate, specimen geometry, or soak duration given in reviewed table.", "notes": [ "Crush value is a strict lower bound, not an equality or measured mean.", "The source says nominal density but gives no density tolerance.", "Original repository epoxy classification was unsupported; source specifies only a novel thermoset polymer.", "Service and crush pressures converted from published psi; no depth-pressure conversion used.", "No compressive strength value or geographic restriction is stated in the reviewed product page." ], "conflicts": [], "reviewed_on": "2026-10-10", "status": "published_reference", "density_basis": "nominal", "raw_values": { "depth": { "value": 5000, "unit": "m seawater", "temperature_c": 4 }, "density": { "value": 480, "unit": "kg/m3" }, "service_pressure": { "value": 7252, "unit": "psi", "temperature_c": 4 }, "hydrostatic_crush_pressure": { "value": 10000, "unit": "psi", "comparator": ">", "temperature_c": 23 } }, "density_note": "Supplier nominal density; tolerance is not stated. Operating and crush pressures use different temperatures; see source details." }, { "id": "base-subtec-6000", "vendor": "Base Materials", "grade": "Subtec 6000", "architecture": "hollow-glass-microsphere syntactic foam", "matrix": "novel thermoset polymer (chemistry unspecified)", "depth_m": 6000, "density_kg_m3": 495, "service_mpa": 59.998178, "crush_mpa": 77.000649, "crush_comparator": ">", "compressive_strength_mpa": null, "compression_basis": null, "source_ids": [ "base-subtec-web" ], "property_source_ids": { "depth_m": [ "base-subtec-web" ], "density_kg_m3": [ "base-subtec-web" ], "service_mpa": [ "base-subtec-web" ], "crush_mpa": [ "base-subtec-web" ], "crush_comparator": [ "base-subtec-web" ], "matrix": [ "base-subtec-web" ], "conditions": [ "base-subtec-web" ] }, "density_tolerance_kg_m3": null, "region_note": null, "conditions": "Maximum operating depth and pressure: 4°C. Hydrostatic crush pressure: 23°C. No test standard, loading rate, specimen geometry, or soak duration given in reviewed table.", "notes": [ "Crush value is a strict lower bound, not an equality or measured mean.", "The source says nominal density but gives no density tolerance.", "Original repository epoxy classification was unsupported; source specifies only a novel thermoset polymer.", "Service and crush pressures converted from published psi; no depth-pressure conversion used.", "No compressive strength value or geographic restriction is stated in the reviewed product page." ], "conflicts": [], "reviewed_on": "2026-10-10", "status": "published_reference", "density_basis": "nominal", "raw_values": { "depth": { "value": 6000, "unit": "m seawater", "temperature_c": 4 }, "density": { "value": 495, "unit": "kg/m3" }, "service_pressure": { "value": 8702, "unit": "psi", "temperature_c": 4 }, "hydrostatic_crush_pressure": { "value": 11168, "unit": "psi", "comparator": ">", "temperature_c": 23 } }, "density_note": "Supplier nominal density; tolerance is not stated. Operating and crush pressures use different temperatures; see source details." }, { "id": "base-subtec-7000", "vendor": "Base Materials", "grade": "Subtec 7000", "architecture": "hollow-glass-microsphere syntactic foam", "matrix": "novel thermoset polymer (chemistry unspecified)", "depth_m": 7000, "density_kg_m3": 544, "service_mpa": 69.995576, "crush_mpa": 86.184466, "crush_comparator": ">", "compressive_strength_mpa": null, "compression_basis": null, "source_ids": [ "base-subtec-web" ], "property_source_ids": { "depth_m": [ "base-subtec-web" ], "density_kg_m3": [ "base-subtec-web" ], "service_mpa": [ "base-subtec-web" ], "crush_mpa": [ "base-subtec-web" ], "crush_comparator": [ "base-subtec-web" ], "matrix": [ "base-subtec-web" ], "conditions": [ "base-subtec-web" ] }, "density_tolerance_kg_m3": null, "region_note": null, "conditions": "Maximum operating depth and pressure: 4°C. Hydrostatic crush pressure: 23°C. No test standard, loading rate, specimen geometry, or soak duration given in reviewed table.", "notes": [ "Crush value is a strict lower bound, not an equality or measured mean.", "The source says nominal density but gives no density tolerance.", "Original repository epoxy classification was unsupported; source specifies only a novel thermoset polymer.", "Service and crush pressures converted from published psi; no depth-pressure conversion used.", "No compressive strength value or geographic restriction is stated in the reviewed product page." ], "conflicts": [], "reviewed_on": "2026-10-10", "status": "published_reference", "density_basis": "nominal", "raw_values": { "depth": { "value": 7000, "unit": "m seawater", "temperature_c": 4 }, "density": { "value": 544, "unit": "kg/m3" }, "service_pressure": { "value": 10152, "unit": "psi", "temperature_c": 4 }, "hydrostatic_crush_pressure": { "value": 12500, "unit": "psi", "comparator": ">", "temperature_c": 23 } }, "density_note": "Supplier nominal density; tolerance is not stated. Operating and crush pressures use different temperatures; see source details." }, { "id": "base-subtec-11500", "vendor": "Base Materials", "grade": "Subtec 11500", "architecture": "hollow-glass-microsphere syntactic foam", "matrix": "novel thermoset polymer (chemistry unspecified)", "depth_m": 11500, "density_kg_m3": 650, "service_mpa": 115.128657, "crush_mpa": 137.895146, "crush_comparator": ">", "compressive_strength_mpa": null, "compression_basis": null, "source_ids": [ "base-subtec-web" ], "property_source_ids": { "depth_m": [ "base-subtec-web" ], "density_kg_m3": [ "base-subtec-web" ], "service_mpa": [ "base-subtec-web" ], "crush_mpa": [ "base-subtec-web" ], "crush_comparator": [ "base-subtec-web" ], "matrix": [ "base-subtec-web" ], "conditions": [ "base-subtec-web" ] }, "density_tolerance_kg_m3": null, "region_note": null, "conditions": "Maximum operating depth and pressure: 4°C. Hydrostatic crush pressure: 23°C. No test standard, loading rate, specimen geometry, or soak duration given in reviewed table.", "notes": [ "Crush value is a strict lower bound, not an equality or measured mean.", "The source says nominal density but gives no density tolerance.", "Original repository epoxy classification was unsupported; source specifies only a novel thermoset polymer.", "Service and crush pressures converted from published psi; no depth-pressure conversion used.", "No compressive strength value or geographic restriction is stated in the reviewed product page." ], "conflicts": [], "reviewed_on": "2026-10-10", "status": "published_reference", "density_basis": "nominal", "raw_values": { "depth": { "value": 11500, "unit": "m seawater", "temperature_c": 4 }, "density": { "value": 650, "unit": "kg/m3" }, "service_pressure": { "value": 16698, "unit": "psi", "temperature_c": 4 }, "hydrostatic_crush_pressure": { "value": 20000, "unit": "psi", "comparator": ">", "temperature_c": 23 } }, "density_note": "Supplier nominal density; tolerance is not stated. Operating and crush pressures use different temperatures; see source details." }, { "id": "ess-macrofoam-18", "vendor": "ESS", "grade": "MacroFoam-18", "architecture": "fiber-reinforced macrospheres in syntactic matrix", "matrix": null, "depth_m": 300, "density_kg_m3": 290, "service_mpa": null, "crush_mpa": null, "compressive_strength_mpa": 8, "compression_basis": "Compressive strength; source does not specify uniaxial definition, offset, or test standard", "density_tolerance_kg_m3": null, "source_ids": [ "ess-chart", "ess-macro-web" ], "property_source_ids": { "depth_m": [ "ess-chart" ], "density_kg_m3": [ "ess-chart" ], "compressive_strength_mpa": [ "ess-macro-web" ] }, "notes": [ "Chart nominal density 290 kg/m³; separate typical-property webpage gives 0.29 ± 0.03 g/cm³. Webpage tolerance is retained as a separate reported fact, not assigned to the chart nominal.", "Supplier publishes hydrostatic crush as depth: 450 m, not pressure. crush_mpa remains null; no unreported seawater density or conversion is assumed.", "Architecture contains larger fiber-reinforced spheres and is outside the current single-microsphere model catalogue.", "Specific resin chemistry, recipe and test standard are not disclosed." ], "conflicts": [], "reviewed_on": "2026-10-10", "status": "published_reference", "conditions": "Typical properties. Test standards, pressure dwell time, temperature and sample geometry are not stated on the source table.", "raw_reported": { "density_g_cm3": 0.29, "density_tolerance_g_cm3": 0.03, "hydrostatic_crush_depth_m": 450, "compressive_strength_psi": 1200, "compressive_strength_mpa": 8, "source_id": "ess-macro-web" }, "region_note": null, "crush_comparator": null, "density_note": "Nominal density from ESS’s depth–density chart. Any different datasheet nominal and tolerance remain in the source details." }, { "id": "ess-macrofoam-20", "vendor": "ESS", "grade": "MacroFoam-20", "architecture": "fiber-reinforced macrospheres in syntactic matrix", "matrix": null, "depth_m": 500, "density_kg_m3": 320, "service_mpa": null, "crush_mpa": null, "compressive_strength_mpa": 12, "compression_basis": "Compressive strength; source does not specify uniaxial definition, offset, or test standard", "density_tolerance_kg_m3": null, "source_ids": [ "ess-chart", "ess-macro-web" ], "property_source_ids": { "depth_m": [ "ess-chart" ], "density_kg_m3": [ "ess-chart" ], "compressive_strength_mpa": [ "ess-macro-web" ] }, "notes": [ "Chart nominal density 320 kg/m³; separate typical-property webpage gives 0.32 ± 0.02 g/cm³. Webpage tolerance is retained as a separate reported fact, not assigned to the chart nominal.", "Supplier publishes hydrostatic crush as depth: 760 m, not pressure. crush_mpa remains null; no unreported seawater density or conversion is assumed.", "Architecture contains larger fiber-reinforced spheres and is outside the current single-microsphere model catalogue.", "Specific resin chemistry, recipe and test standard are not disclosed." ], "conflicts": [], "reviewed_on": "2026-10-10", "status": "published_reference", "conditions": "Typical properties. Test standards, pressure dwell time, temperature and sample geometry are not stated on the source table.", "raw_reported": { "density_g_cm3": 0.32, "density_tolerance_g_cm3": 0.02, "hydrostatic_crush_depth_m": 760, "compressive_strength_psi": 1700, "compressive_strength_mpa": 12, "source_id": "ess-macro-web" }, "region_note": null, "crush_comparator": null, "density_note": "Nominal density from ESS’s depth–density chart. Any different datasheet nominal and tolerance remain in the source details." }, { "id": "ess-macrofoam-22", "vendor": "ESS", "grade": "MacroFoam-22", "architecture": "fiber-reinforced macrospheres in syntactic matrix", "matrix": null, "depth_m": 750, "density_kg_m3": 350, "service_mpa": null, "crush_mpa": null, "compressive_strength_mpa": 13, "compression_basis": "Compressive strength; source does not specify uniaxial definition, offset, or test standard", "density_tolerance_kg_m3": null, "source_ids": [ "ess-chart", "ess-macro-web" ], "property_source_ids": { "depth_m": [ "ess-chart" ], "density_kg_m3": [ "ess-chart" ], "compressive_strength_mpa": [ "ess-macro-web" ] }, "notes": [ "Chart nominal density 350 kg/m³; separate typical-property webpage gives 0.35 ± 0.02 g/cm³. Webpage tolerance is retained as a separate reported fact, not assigned to the chart nominal.", "Supplier publishes hydrostatic crush as depth: 1135 m, not pressure. crush_mpa remains null; no unreported seawater density or conversion is assumed.", "Architecture contains larger fiber-reinforced spheres and is outside the current single-microsphere model catalogue.", "Specific resin chemistry, recipe and test standard are not disclosed." ], "conflicts": [], "reviewed_on": "2026-10-10", "status": "published_reference", "conditions": "Typical properties. Test standards, pressure dwell time, temperature and sample geometry are not stated on the source table.", "raw_reported": { "density_g_cm3": 0.35, "density_tolerance_g_cm3": 0.02, "hydrostatic_crush_depth_m": 1135, "compressive_strength_psi": 1900, "compressive_strength_mpa": 13, "source_id": "ess-macro-web" }, "region_note": null, "crush_comparator": null, "density_note": "Nominal density from ESS’s depth–density chart. Any different datasheet nominal and tolerance remain in the source details." }, { "id": "ess-mz-22", "vendor": "ESS", "grade": "MZ-22", "architecture": "resin with hollow glass microspheres", "matrix": null, "depth_m": 1000, "density_kg_m3": 350, "service_mpa": 10.0, "crush_mpa": 26.7, "compressive_strength_mpa": 22, "compression_basis": "uniaxial", "density_tolerance_kg_m3": null, "source_ids": [ "ess-chart", "ess-mz-pdf", "ess-micro-web" ], "property_source_ids": { "depth_m": [ "ess-chart" ], "density_kg_m3": [ "ess-chart" ], "service_mpa": [ "ess-mz-pdf" ], "crush_mpa": [ "ess-mz-pdf" ], "compressive_strength_mpa": [ "ess-mz-pdf" ] }, "notes": [ "Published supplier reference; not a recipe, model prediction, or independent qualification.", "Specific resin chemistry and processing recipe are not disclosed in these sources.", "SI values below preserve the printed metric columns: bar divided by 10 for MPa; they are not recomputed from psi. Some source unit pairs are inconsistent.", "PDF reports maximum 1% weight gain after 24 hours at service depth; temperature, cycle count, specimen geometry, and test standards are not stated.", "Depth and nominal density use the ESS overview chart. The separate PDF reports 22 ± 2 lb/ft³ (0.35 ± 0.03 g/cm³); its tolerance is not automatically applied to the chart nominal." ], "conflicts": [ { "field": "compressive_strength_mpa", "value": 24.8211262554, "unit": "MPa", "source_id": "ess-mz-pdf", "note": "Calculated from printed 3,600 psi, whereas same PDF prints 22 MPa. Neither unit is silently corrected." } ], "reviewed_on": "2026-10-10", "status": "published_reference", "conditions": "Maximum 1% weight gain over 24 h at stated service depth. No published temperature, pressure cycling history, test standard, or specimen dimensions in these sheets.", "raw_reported": { "density_lb_ft3": 22, "density_tolerance_lb_ft3": 2, "density_g_cm3": 0.35, "density_tolerance_g_cm3": 0.03, "service_psi": 1450, "service_bar": 100, "hydrostatic_crush_psi": 3875, "hydrostatic_crush_bar": 267, "uniaxial_strength_psi": 3600, "uniaxial_strength_mpa": 22, "source_id": "ess-mz-pdf" }, "region_note": null, "crush_comparator": null, "density_note": "Nominal density from ESS’s depth–density chart. Any different datasheet nominal and tolerance remain in the source details.", "compression_method_note": "Uniaxial compressive strength at 0.2% offset; test standard not stated" }, { "id": "ess-mz-38", "vendor": "ESS", "grade": "MZ-38", "architecture": "resin with hollow glass microspheres", "matrix": null, "depth_m": 1000, "density_kg_m3": 610.0, "service_mpa": 10.0, "crush_mpa": 56.2, "compressive_strength_mpa": 30, "compression_basis": "uniaxial", "density_tolerance_kg_m3": 30, "source_ids": [ "ess-mz-pdf", "ess-micro-web" ], "property_source_ids": { "depth_m": [ "ess-mz-pdf" ], "density_kg_m3": [ "ess-mz-pdf" ], "service_mpa": [ "ess-mz-pdf" ], "crush_mpa": [ "ess-mz-pdf" ], "compressive_strength_mpa": [ "ess-mz-pdf" ] }, "notes": [ "Published supplier reference; not a recipe, model prediction, or independent qualification.", "Specific resin chemistry and processing recipe are not disclosed in these sources.", "SI values below preserve the printed metric columns: bar divided by 10 for MPa; they are not recomputed from psi. Some source unit pairs are inconsistent.", "PDF reports maximum 1% weight gain after 24 hours at service depth; temperature, cycle count, specimen geometry, and test standards are not stated.", "Density and depth use this grade’s datasheet; grade is not listed in the current overview chart." ], "conflicts": [], "reviewed_on": "2026-10-10", "status": "published_reference", "conditions": "Maximum 1% weight gain over 24 h at stated service depth. No published temperature, pressure cycling history, test standard, or specimen dimensions in these sheets.", "raw_reported": { "density_lb_ft3": 38, "density_tolerance_lb_ft3": 2, "density_g_cm3": 0.61, "density_tolerance_g_cm3": 0.03, "service_psi": 1450, "service_bar": 100, "hydrostatic_crush_psi": 8145, "hydrostatic_crush_bar": 562, "uniaxial_strength_psi": 4320, "uniaxial_strength_mpa": 30, "source_id": "ess-mz-pdf" }, "region_note": null, "crush_comparator": null, "density_note": "Density and tolerance from the grade source; this grade is absent from the current overview chart.", "compression_method_note": "Uniaxial compressive strength at 0.2% offset; test standard not stated" }, { "id": "ess-macrofoam-24", "vendor": "ESS", "grade": "MacroFoam-24", "architecture": "fiber-reinforced macrospheres in syntactic matrix", "matrix": null, "depth_m": 1000, "density_kg_m3": 390, "service_mpa": null, "crush_mpa": null, "compressive_strength_mpa": 14, "compression_basis": "Compressive strength; source does not specify uniaxial definition, offset, or test standard", "density_tolerance_kg_m3": null, "source_ids": [ "ess-chart", "ess-macro-web" ], "property_source_ids": { "depth_m": [ "ess-chart" ], "density_kg_m3": [ "ess-chart" ], "compressive_strength_mpa": [ "ess-macro-web" ] }, "notes": [ "Chart nominal density 390 kg/m³; separate typical-property webpage gives 0.39 ± 0.02 g/cm³. Webpage tolerance is retained as a separate reported fact, not assigned to the chart nominal.", "Supplier publishes hydrostatic crush as depth: 1515 m, not pressure. crush_mpa remains null; no unreported seawater density or conversion is assumed.", "Architecture contains larger fiber-reinforced spheres and is outside the current single-microsphere model catalogue.", "Specific resin chemistry, recipe and test standard are not disclosed." ], "conflicts": [], "reviewed_on": "2026-10-10", "status": "published_reference", "conditions": "Typical properties. Test standards, pressure dwell time, temperature and sample geometry are not stated on the source table.", "raw_reported": { "density_g_cm3": 0.39, "density_tolerance_g_cm3": 0.02, "hydrostatic_crush_depth_m": 1515, "compressive_strength_psi": 2100, "compressive_strength_mpa": 14, "source_id": "ess-macro-web" }, "region_note": null, "crush_comparator": null, "density_note": "Nominal density from ESS’s depth–density chart. Any different datasheet nominal and tolerance remain in the source details." }, { "id": "ess-bz-24", "vendor": "ESS", "grade": "BZ-24", "architecture": "resin with hollow glass microspheres", "matrix": null, "depth_m": 2000, "density_kg_m3": 385, "service_mpa": 20.4, "crush_mpa": 32.0, "compressive_strength_mpa": 23, "compression_basis": "uniaxial", "density_tolerance_kg_m3": null, "source_ids": [ "ess-chart", "ess-bz-pdf", "ess-micro-web" ], "property_source_ids": { "depth_m": [ "ess-chart" ], "density_kg_m3": [ "ess-chart" ], "service_mpa": [ "ess-bz-pdf" ], "crush_mpa": [ "ess-bz-pdf" ], "compressive_strength_mpa": [ "ess-bz-pdf" ] }, "notes": [ "Published supplier reference; not a recipe, model prediction, or independent qualification.", "Specific resin chemistry and processing recipe are not disclosed in these sources.", "SI values below preserve the printed metric columns: bar divided by 10 for MPa; they are not recomputed from psi. Some source unit pairs are inconsistent.", "PDF reports maximum 1% weight gain after 24 hours at service depth; temperature, cycle count, specimen geometry, and test standards are not stated.", "Depth and nominal density use the ESS overview chart. The separate PDF reports 24 ± 2 lb/ft³ (0.39 ± 0.03 g/cm³); its tolerance is not automatically applied to the chart nominal." ], "conflicts": [ { "field": "density_kg_m3", "value": 390.0, "unit": "kg/m³", "source_id": "ess-bz-pdf", "note": "PDF metric density; chart instead reports 385 kg/m³. Source discrepancy retained." }, { "field": "service_mpa", "value": 20.684272, "unit": "MPa", "source_id": "ess-bz-pdf", "note": "Calculated from printed 3,000 psi; same source prints 204 bar (20.4 MPa). Printed metric column is retained." } ], "reviewed_on": "2026-10-10", "status": "published_reference", "conditions": "Maximum 1% weight gain over 24 h at stated service depth. No published temperature, pressure cycling history, test standard, or specimen dimensions in these sheets.", "raw_reported": { "density_lb_ft3": 24, "density_tolerance_lb_ft3": 2, "density_g_cm3": 0.39, "density_tolerance_g_cm3": 0.03, "service_psi": 3000, "service_bar": 204, "hydrostatic_crush_psi": 4640, "hydrostatic_crush_bar": 320, "uniaxial_strength_psi": 3340, "uniaxial_strength_mpa": 23, "source_id": "ess-bz-pdf" }, "region_note": null, "crush_comparator": null, "density_note": "Nominal density from ESS’s depth–density chart. Any different datasheet nominal and tolerance remain in the source details.", "compression_method_note": "Uniaxial compressive strength at 0.2% offset; test standard not stated" }, { "id": "ess-bz-26", "vendor": "ESS", "grade": "BZ-26", "architecture": "resin with hollow glass microspheres", "matrix": null, "depth_m": 3000, "density_kg_m3": 416, "service_mpa": 29.6, "crush_mpa": 49.4, "compressive_strength_mpa": 35, "compression_basis": "uniaxial", "density_tolerance_kg_m3": null, "source_ids": [ "ess-chart", "ess-bz-pdf", "ess-micro-web" ], "property_source_ids": { "depth_m": [ "ess-chart" ], "density_kg_m3": [ "ess-chart" ], "service_mpa": [ "ess-bz-pdf" ], "crush_mpa": [ "ess-bz-pdf" ], "compressive_strength_mpa": [ "ess-bz-pdf" ] }, "notes": [ "Published supplier reference; not a recipe, model prediction, or independent qualification.", "Specific resin chemistry and processing recipe are not disclosed in these sources.", "SI values below preserve the printed metric columns: bar divided by 10 for MPa; they are not recomputed from psi. Some source unit pairs are inconsistent.", "PDF reports maximum 1% weight gain after 24 hours at service depth; temperature, cycle count, specimen geometry, and test standards are not stated.", "Depth and nominal density use the ESS overview chart. The separate PDF reports 26 ± 2 lb/ft³ (0.42 ± 0.03 g/cm³); its tolerance is not automatically applied to the chart nominal." ], "conflicts": [ { "field": "density_kg_m3", "value": 420.0, "unit": "kg/m³", "source_id": "ess-bz-pdf", "note": "PDF metric density; chart instead reports 416 kg/m³. Source discrepancy retained." }, { "field": "service_mpa", "value": 29.854299, "unit": "MPa", "source_id": "ess-bz-pdf", "note": "Calculated from printed 4,330 psi; same source prints 296 bar (29.6 MPa). Printed metric column is retained." } ], "reviewed_on": "2026-10-10", "status": "published_reference", "conditions": "Maximum 1% weight gain over 24 h at stated service depth. No published temperature, pressure cycling history, test standard, or specimen dimensions in these sheets.", "raw_reported": { "density_lb_ft3": 26, "density_tolerance_lb_ft3": 2, "density_g_cm3": 0.42, "density_tolerance_g_cm3": 0.03, "service_psi": 4330, "service_bar": 296, "hydrostatic_crush_psi": 7165, "hydrostatic_crush_bar": 494, "uniaxial_strength_psi": 5050, "uniaxial_strength_mpa": 35, "source_id": "ess-bz-pdf" }, "region_note": null, "crush_comparator": null, "density_note": "Nominal density from ESS’s depth–density chart. Any different datasheet nominal and tolerance remain in the source details.", "compression_method_note": "Uniaxial compressive strength at 0.2% offset; test standard not stated" }, { "id": "ess-bz-28", "vendor": "ESS", "grade": "BZ-28", "architecture": "resin with hollow glass microspheres", "matrix": null, "depth_m": 3400, "density_kg_m3": 450, "service_mpa": 37.9, "crush_mpa": 63.9, "compressive_strength_mpa": 42, "compression_basis": "uniaxial", "density_tolerance_kg_m3": null, "source_ids": [ "ess-chart", "ess-bz-pdf", "ess-micro-web" ], "property_source_ids": { "depth_m": [ "ess-chart" ], "density_kg_m3": [ "ess-chart" ], "service_mpa": [ "ess-bz-pdf" ], "crush_mpa": [ "ess-bz-pdf" ], "compressive_strength_mpa": [ "ess-bz-pdf" ] }, "notes": [ "Published supplier reference; not a recipe, model prediction, or independent qualification.", "Specific resin chemistry and processing recipe are not disclosed in these sources.", "SI values below preserve the printed metric columns: bar divided by 10 for MPa; they are not recomputed from psi. Some source unit pairs are inconsistent.", "PDF reports maximum 1% weight gain after 24 hours at service depth; temperature, cycle count, specimen geometry, and test standards are not stated.", "Depth and nominal density use the ESS overview chart. The separate PDF reports 28 ± 2 lb/ft³ (0.45 ± 0.03 g/cm³); its tolerance is not automatically applied to the chart nominal." ], "conflicts": [ { "field": "service_mpa", "value": 38.128008, "unit": "MPa", "source_id": "ess-bz-pdf", "note": "Calculated from printed 5,530 psi; same source prints 379 bar (37.9 MPa). Printed metric column is retained." } ], "reviewed_on": "2026-10-10", "status": "published_reference", "conditions": "Maximum 1% weight gain over 24 h at stated service depth. No published temperature, pressure cycling history, test standard, or specimen dimensions in these sheets.", "raw_reported": { "density_lb_ft3": 28, "density_tolerance_lb_ft3": 2, "density_g_cm3": 0.45, "density_tolerance_g_cm3": 0.03, "service_psi": 5530, "service_bar": 379, "hydrostatic_crush_psi": 9270, "hydrostatic_crush_bar": 639, "uniaxial_strength_psi": 6055, "uniaxial_strength_mpa": 42, "source_id": "ess-bz-pdf" }, "region_note": null, "crush_comparator": null, "density_note": "Nominal density from ESS’s depth–density chart. Any different datasheet nominal and tolerance remain in the source details.", "compression_method_note": "Uniaxial compressive strength at 0.2% offset; test standard not stated" }, { "id": "ess-az-29", "vendor": "ESS", "grade": "AZ-29", "architecture": "resin with hollow glass microspheres", "matrix": null, "depth_m": 4000, "density_kg_m3": 465, "service_mpa": 39.8, "crush_mpa": 60.5, "compressive_strength_mpa": 46, "compression_basis": "uniaxial", "density_tolerance_kg_m3": null, "source_ids": [ "ess-chart", "ess-az-pdf", "ess-micro-web" ], "property_source_ids": { "depth_m": [ "ess-chart" ], "density_kg_m3": [ "ess-chart" ], "service_mpa": [ "ess-az-pdf" ], "crush_mpa": [ "ess-az-pdf" ], "compressive_strength_mpa": [ "ess-az-pdf" ] }, "notes": [ "Published supplier reference; not a recipe, model prediction, or independent qualification.", "Specific resin chemistry and processing recipe are not disclosed in these sources.", "SI values below preserve the printed metric columns: bar divided by 10 for MPa; they are not recomputed from psi. Some source unit pairs are inconsistent.", "PDF reports maximum 1% weight gain after 24 hours at service depth; temperature, cycle count, specimen geometry, and test standards are not stated.", "Depth and nominal density use the ESS overview chart. The separate PDF reports 29 ± 2 lb/ft³ (0.46 ± 0.03 g/cm³); its tolerance is not automatically applied to the chart nominal." ], "conflicts": [ { "field": "density_kg_m3", "value": 460.0, "unit": "kg/m³", "source_id": "ess-az-pdf", "note": "PDF metric density; chart instead reports 465 kg/m³. Source discrepancy retained." } ], "reviewed_on": "2026-10-10", "status": "published_reference", "conditions": "Maximum 1% weight gain over 24 h at stated service depth. No published temperature, pressure cycling history, test standard, or specimen dimensions in these sheets.", "raw_reported": { "density_lb_ft3": 29, "density_tolerance_lb_ft3": 2, "density_g_cm3": 0.46, "density_tolerance_g_cm3": 0.03, "service_psi": 5775, "service_bar": 398, "hydrostatic_crush_psi": 8780, "hydrostatic_crush_bar": 605, "uniaxial_strength_psi": 6650, "uniaxial_strength_mpa": 46, "source_id": "ess-az-pdf" }, "region_note": null, "crush_comparator": null, "density_note": "Nominal density from ESS’s depth–density chart. Any different datasheet nominal and tolerance remain in the source details.", "compression_method_note": "Uniaxial compressive strength at 0.2% offset; test standard not stated" }, { "id": "ess-az-30", "vendor": "ESS", "grade": "AZ-30", "architecture": "resin with hollow glass microspheres", "matrix": null, "depth_m": 4500, "density_kg_m3": 480, "service_mpa": 45.0, "crush_mpa": 71.1, "compressive_strength_mpa": 55, "compression_basis": "uniaxial", "density_tolerance_kg_m3": null, "source_ids": [ "ess-chart", "ess-az-pdf", "ess-micro-web" ], "property_source_ids": { "depth_m": [ "ess-chart" ], "density_kg_m3": [ "ess-chart" ], "service_mpa": [ "ess-az-pdf" ], "crush_mpa": [ "ess-az-pdf" ], "compressive_strength_mpa": [ "ess-az-pdf" ] }, "notes": [ "Published supplier reference; not a recipe, model prediction, or independent qualification.", "Specific resin chemistry and processing recipe are not disclosed in these sources.", "SI values below preserve the printed metric columns: bar divided by 10 for MPa; they are not recomputed from psi. Some source unit pairs are inconsistent.", "PDF reports maximum 1% weight gain after 24 hours at service depth; temperature, cycle count, specimen geometry, and test standards are not stated.", "Depth and nominal density use the ESS overview chart. The separate PDF reports 30 ± 2 lb/ft³ (0.46 ± 0.03 g/cm³); its tolerance is not automatically applied to the chart nominal.", "PDF density 30 lb/ft³ converts to approximately 480.55 kg/m³, whereas its parenthetical 0.46 g/cm³ is 460 kg/m³. Chart 480 is the selected displayed nominal, not confirmation of which PDF value the supplier intended." ], "conflicts": [ { "field": "density_kg_m3", "value": 460.0, "unit": "kg/m³", "source_id": "ess-az-pdf", "note": "PDF metric density; chart instead reports 480 kg/m³. Source discrepancy retained." }, { "field": "density_kg_m3", "value": 480.553901218804, "unit": "kg/m³", "source_id": "ess-az-pdf", "note": "Calculated from PDF nominal 30 lb/ft³; internally inconsistent with its 0.46 g/cm³." } ], "reviewed_on": "2026-10-10", "status": "published_reference", "conditions": "Maximum 1% weight gain over 24 h at stated service depth. No published temperature, pressure cycling history, test standard, or specimen dimensions in these sheets.", "raw_reported": { "density_lb_ft3": 30, "density_tolerance_lb_ft3": 2, "density_g_cm3": 0.46, "density_tolerance_g_cm3": 0.03, "service_psi": 6527, "service_bar": 450, "hydrostatic_crush_psi": 10310, "hydrostatic_crush_bar": 711, "uniaxial_strength_psi": 7930, "uniaxial_strength_mpa": 55, "source_id": "ess-az-pdf" }, "region_note": null, "crush_comparator": null, "density_note": "Nominal density from ESS’s depth–density chart. Any different datasheet nominal and tolerance remain in the source details.", "compression_method_note": "Uniaxial compressive strength at 0.2% offset; test standard not stated" }, { "id": "ess-az-31", "vendor": "ESS", "grade": "AZ-31", "architecture": "resin with hollow glass microspheres", "matrix": null, "depth_m": 5000, "density_kg_m3": 495, "service_mpa": 50.3, "crush_mpa": 88.3, "compressive_strength_mpa": 66, "compression_basis": "uniaxial", "density_tolerance_kg_m3": null, "source_ids": [ "ess-chart", "ess-az-pdf", "ess-micro-web" ], "property_source_ids": { "depth_m": [ "ess-chart" ], "density_kg_m3": [ "ess-chart" ], "service_mpa": [ "ess-az-pdf" ], "crush_mpa": [ "ess-az-pdf" ], "compressive_strength_mpa": [ "ess-az-pdf" ] }, "notes": [ "Published supplier reference; not a recipe, model prediction, or independent qualification.", "Specific resin chemistry and processing recipe are not disclosed in these sources.", "SI values below preserve the printed metric columns: bar divided by 10 for MPa; they are not recomputed from psi. Some source unit pairs are inconsistent.", "PDF reports maximum 1% weight gain after 24 hours at service depth; temperature, cycle count, specimen geometry, and test standards are not stated.", "Depth and nominal density use the ESS overview chart. The separate PDF reports 31 ± 2 lb/ft³ (0.50 ± 0.03 g/cm³); its tolerance is not automatically applied to the chart nominal." ], "conflicts": [ { "field": "density_kg_m3", "value": 500.0, "unit": "kg/m³", "source_id": "ess-az-pdf", "note": "PDF metric density; chart instead reports 495 kg/m³. Source discrepancy retained." }, { "field": "crush_mpa", "value": 88.942369, "unit": "MPa", "source_id": "ess-az-pdf", "note": "Calculated from printed 12,900 psi; same source prints 883 bar (88.3 MPa). Printed metric column is retained." } ], "reviewed_on": "2026-10-10", "status": "published_reference", "conditions": "Maximum 1% weight gain over 24 h at stated service depth. No published temperature, pressure cycling history, test standard, or specimen dimensions in these sheets.", "raw_reported": { "density_lb_ft3": 31, "density_tolerance_lb_ft3": 2, "density_g_cm3": 0.5, "density_tolerance_g_cm3": 0.03, "service_psi": 7300, "service_bar": 503, "hydrostatic_crush_psi": 12900, "hydrostatic_crush_bar": 883, "uniaxial_strength_psi": 9640, "uniaxial_strength_mpa": 66, "source_id": "ess-az-pdf" }, "region_note": null, "crush_comparator": null, "density_note": "Nominal density from ESS’s depth–density chart. Any different datasheet nominal and tolerance remain in the source details.", "compression_method_note": "Uniaxial compressive strength at 0.2% offset; test standard not stated" }, { "id": "ess-az-34", "vendor": "ESS", "grade": "AZ-34", "architecture": "resin with hollow glass microspheres", "matrix": null, "depth_m": 6000, "density_kg_m3": 550.0, "service_mpa": 62.0, "crush_mpa": 97.1, "compressive_strength_mpa": 69, "compression_basis": "uniaxial", "density_tolerance_kg_m3": 30, "source_ids": [ "ess-az-legacy", "ess-micro-web" ], "property_source_ids": { "depth_m": [ "ess-az-legacy" ], "density_kg_m3": [ "ess-az-legacy" ], "service_mpa": [ "ess-az-legacy" ], "crush_mpa": [ "ess-az-legacy" ], "compressive_strength_mpa": [ "ess-az-legacy" ] }, "notes": [ "Published supplier reference; not a recipe, model prediction, or independent qualification.", "Specific resin chemistry and processing recipe are not disclosed in these sources.", "SI values below preserve the printed metric columns: bar divided by 10 for MPa; they are not recomputed from psi. Some source unit pairs are inconsistent.", "PDF reports maximum 1% weight gain after 24 hours at service depth; temperature, cycle count, specimen geometry, and test standards are not stated.", "Density and depth use this grade’s datasheet; grade is not listed in the current overview chart.", "Historical-reference classification reflects omission from the newer ESS260608 PDF and overview chart; it does not assert that the grade is discontinued. Obtain supplier confirmation for availability." ], "conflicts": [], "reviewed_on": "2026-10-10", "status": "historical_reference", "conditions": "Maximum 1% weight gain over 24 h at stated service depth. No published temperature, pressure cycling history, test standard, or specimen dimensions in these sheets.", "raw_reported": { "density_lb_ft3": 34, "density_tolerance_lb_ft3": 2, "density_g_cm3": 0.55, "density_tolerance_g_cm3": 0.03, "service_psi": 9000, "service_bar": 620, "hydrostatic_crush_psi": 14080, "hydrostatic_crush_bar": 971, "uniaxial_strength_psi": 9980, "uniaxial_strength_mpa": 69, "source_id": "ess-az-legacy" }, "region_note": null, "crush_comparator": null, "density_note": "Density and tolerance from the grade source; this grade is absent from the current overview chart.", "compression_method_note": "Uniaxial compressive strength at 0.2% offset; test standard not stated" }, { "id": "ess-hz-34", "vendor": "ESS", "grade": "HZ-34", "architecture": "resin with hollow glass microspheres", "matrix": null, "depth_m": 7000, "density_kg_m3": 545, "service_mpa": 70.0, "crush_mpa": 105.7, "compressive_strength_mpa": 85, "compression_basis": "uniaxial", "density_tolerance_kg_m3": null, "source_ids": [ "ess-chart", "ess-hz-pdf", "ess-micro-web" ], "property_source_ids": { "depth_m": [ "ess-chart" ], "density_kg_m3": [ "ess-chart" ], "service_mpa": [ "ess-hz-pdf" ], "crush_mpa": [ "ess-hz-pdf" ], "compressive_strength_mpa": [ "ess-hz-pdf" ] }, "notes": [ "Published supplier reference; not a recipe, model prediction, or independent qualification.", "Specific resin chemistry and processing recipe are not disclosed in these sources.", "SI values below preserve the printed metric columns: bar divided by 10 for MPa; they are not recomputed from psi. Some source unit pairs are inconsistent.", "PDF reports maximum 1% weight gain after 24 hours at service depth; temperature, cycle count, specimen geometry, and test standards are not stated.", "Depth and nominal density use the ESS overview chart. The separate PDF reports 34 ± 2 lb/ft³ (0.55 ± 0.03 g/cm³); its tolerance is not automatically applied to the chart nominal." ], "conflicts": [ { "field": "density_kg_m3", "value": 550.0, "unit": "kg/m³", "source_id": "ess-hz-pdf", "note": "PDF metric density; chart instead reports 545 kg/m³. Source discrepancy retained." } ], "reviewed_on": "2026-10-10", "status": "published_reference", "conditions": "Maximum 1% weight gain over 24 h at stated service depth. No published temperature, pressure cycling history, test standard, or specimen dimensions in these sheets.", "raw_reported": { "density_lb_ft3": 34, "density_tolerance_lb_ft3": 2, "density_g_cm3": 0.55, "density_tolerance_g_cm3": 0.03, "service_psi": 10150, "service_bar": 700, "hydrostatic_crush_psi": 15325, "hydrostatic_crush_bar": 1057, "uniaxial_strength_psi": 12370, "uniaxial_strength_mpa": 85, "source_id": "ess-hz-pdf" }, "region_note": null, "crush_comparator": null, "density_note": "Nominal density from ESS’s depth–density chart. Any different datasheet nominal and tolerance remain in the source details.", "compression_method_note": "Uniaxial compressive strength at 0.2% offset; test standard not stated" }, { "id": "ess-hz-43", "vendor": "ESS", "grade": "HZ-43", "architecture": "resin with hollow glass microspheres", "matrix": null, "depth_m": 11000, "density_kg_m3": 690, "service_mpa": 124.1, "crush_mpa": 165.0, "compressive_strength_mpa": 110, "compression_basis": "uniaxial", "density_tolerance_kg_m3": null, "source_ids": [ "ess-chart", "ess-hz-pdf", "ess-micro-web", "ess-hz-web" ], "property_source_ids": { "depth_m": [ "ess-chart" ], "density_kg_m3": [ "ess-chart" ], "service_mpa": [ "ess-hz-pdf" ], "crush_mpa": [ "ess-hz-pdf" ], "compressive_strength_mpa": [ "ess-hz-pdf" ] }, "notes": [ "Published supplier reference; not a recipe, model prediction, or independent qualification.", "Specific resin chemistry and processing recipe are not disclosed in these sources.", "SI values below preserve the printed metric columns: bar divided by 10 for MPa; they are not recomputed from psi. Some source unit pairs are inconsistent.", "PDF reports maximum 1% weight gain after 24 hours at service depth; temperature, cycle count, specimen geometry, and test standards are not stated.", "Depth and nominal density use the ESS overview chart. The separate PDF reports 43 ± 2 lb/ft³ (0.69 ± 0.03 g/cm³); its tolerance is not automatically applied to the chart nominal." ], "conflicts": [ { "field": "density_lb_ft3", "value": 42, "unit": "lb/ft³", "source_id": "ess-hz-web", "note": "Webpage says 42 ± 2; newer PDF says 43 ± 2 and chart says 43. All report 0.69 g/cm³ or 690 kg/m³ in metric." }, { "field": "crush_mpa", "value": 165.474175, "unit": "MPa", "source_id": "ess-hz-pdf", "note": "Calculated from printed 24,000 psi; same source prints 1,650 bar (165 MPa). Printed metric column is retained." } ], "reviewed_on": "2026-10-10", "status": "published_reference", "conditions": "Maximum 1% weight gain over 24 h at stated service depth. No published temperature, pressure cycling history, test standard, or specimen dimensions in these sheets.", "raw_reported": { "density_lb_ft3": 43, "density_tolerance_lb_ft3": 2, "density_g_cm3": 0.69, "density_tolerance_g_cm3": 0.03, "service_psi": 18000, "service_bar": 1241, "hydrostatic_crush_psi": 24000, "hydrostatic_crush_bar": 1650, "uniaxial_strength_psi": 16000, "uniaxial_strength_mpa": 110, "source_id": "ess-hz-pdf" }, "region_note": null, "crush_comparator": null, "density_note": "Nominal density from ESS’s depth–density chart. Any different datasheet nominal and tolerance remain in the source details.", "compression_method_note": "Uniaxial compressive strength at 0.2% offset; test standard not stated" }, { "id": "ess-hz-45", "vendor": "ESS", "grade": "HZ-45", "architecture": "resin with hollow glass microspheres", "matrix": null, "depth_m": 11000, "density_kg_m3": 720.0, "service_mpa": 124.1, "crush_mpa": 165.0, "compressive_strength_mpa": 118, "compression_basis": "uniaxial", "density_tolerance_kg_m3": 30, "source_ids": [ "ess-hz-pdf", "ess-micro-web" ], "property_source_ids": { "depth_m": [ "ess-hz-pdf" ], "density_kg_m3": [ "ess-hz-pdf" ], "service_mpa": [ "ess-hz-pdf" ], "crush_mpa": [ "ess-hz-pdf" ], "compressive_strength_mpa": [ "ess-hz-pdf" ] }, "notes": [ "Published supplier reference; not a recipe, model prediction, or independent qualification.", "Specific resin chemistry and processing recipe are not disclosed in these sources.", "SI values below preserve the printed metric columns: bar divided by 10 for MPa; they are not recomputed from psi. Some source unit pairs are inconsistent.", "PDF reports maximum 1% weight gain after 24 hours at service depth; temperature, cycle count, specimen geometry, and test standards are not stated.", "Density and depth use this grade’s datasheet; grade is not listed in the current overview chart." ], "conflicts": [ { "field": "crush_mpa", "value": 165.474175, "unit": "MPa", "source_id": "ess-hz-pdf", "note": "Calculated from printed 24,000 psi; same source prints 1,650 bar (165 MPa). Printed metric column is retained." } ], "reviewed_on": "2026-10-10", "status": "published_reference", "conditions": "Maximum 1% weight gain over 24 h at stated service depth. No published temperature, pressure cycling history, test standard, or specimen dimensions in these sheets.", "raw_reported": { "density_lb_ft3": 45, "density_tolerance_lb_ft3": 2, "density_g_cm3": 0.72, "density_tolerance_g_cm3": 0.03, "service_psi": 18000, "service_bar": 1241, "hydrostatic_crush_psi": 24000, "hydrostatic_crush_bar": 1650, "uniaxial_strength_psi": 17000, "uniaxial_strength_mpa": 118, "source_id": "ess-hz-pdf" }, "region_note": null, "crush_comparator": null, "density_note": "Density and tolerance from the grade source; this grade is absent from the current overview chart.", "compression_method_note": "Uniaxial compressive strength at 0.2% offset; test standard not stated" }, { "id": "synfoam-dw-31", "vendor": "SynFoam", "grade": "DW-31", "architecture": "syntactic foam", "matrix": null, "depth_m": 5330, "density_kg_m3": 496.572365, "service_mpa": 54.882268, "crush_mpa": 89.631845, "crush_comparator": "=", "compressive_strength_mpa": 68.947573, "compression_basis": "Compressive strength; test method and loading configuration not specified.", "source_ids": [ "synfoam-dw-web", "synfoam-dw-pdf-2015" ], "property_source_ids": { "depth_m": [ "synfoam-dw-web" ], "density_kg_m3": [ "synfoam-dw-web" ], "service_mpa": [ "synfoam-dw-web" ], "crush_mpa": [ "synfoam-dw-web" ], "compressive_strength_mpa": [ "synfoam-dw-web" ], "density_tolerance_kg_m3": [ "synfoam-dw-web" ], "compression_basis": [ "synfoam-dw-web" ] }, "density_tolerance_kg_m3": 32.036927, "region_note": null, "conditions": "Water absorption is specified for 24 hours at depth. Temperature, pressure loading history, specimen geometry, and mechanical test standards are not stated.", "notes": [ "Current product webpage selected for displayed properties. Official PDF (copyright 2015) retained as another observation.", "Density and tolerance are converted from published lb/ft³; pressure values converted from published psi.", "Reviewed DW sources do not identify resin chemistry. The old epoxy label was unsupported.", "Crush and compressive strength are distinct reported quantities; no uniaxial test configuration or test standard was specified.", "All grades have a compressive-modulus conflict between webpage and PDF; confirm current technical data sheet with supplier.", "Published extreme-depth ratings are supplier claims, not independently established ocean operating conditions or FoamForge qualification." ], "conflicts": [ { "field": "compressive_strength_mpa", "value": 58.605437, "unit": "MPa", "source_id": "synfoam-dw-pdf-2015", "note": "PDF gives 8,500 psi; current webpage gives 10,000 psi. No revision reconciliation found." }, { "field": "compressive_modulus_psi", "value": 260000, "unit": "psi", "source_id": "synfoam-dw-pdf-2015", "note": "PDF gives 260,000 psi; webpage gives 420,000 psi. Modulus not selected for catalogue display." } ], "reviewed_on": "2026-10-10", "status": "published_reference", "density_basis": "reported density with tolerance", "raw_values": { "depth": { "value": 5330, "unit": "m" }, "density": { "value": 31, "unit": "lb/ft3", "tolerance": 2 }, "service_pressure": { "value": 7960, "unit": "psi" }, "hydrostatic_crush_pressure": { "value": 13000, "unit": "psi" }, "compressive_strength": { "value": 10000, "unit": "psi" }, "compressive_modulus": { "value": 420000, "unit": "psi" } }, "density_note": "Supplier nominal density and ±2 lb/ft³ tolerance converted to kg/m³. This is a tolerance, not a prediction interval." }, { "id": "synfoam-dw-33", "vendor": "SynFoam", "grade": "DW-33", "architecture": "syntactic foam", "matrix": null, "depth_m": 6250, "density_kg_m3": 528.609291, "service_mpa": 64.397033, "crush_mpa": 98.250291, "crush_comparator": "=", "compressive_strength_mpa": 77.56602, "compression_basis": "Compressive strength; test method and loading configuration not specified.", "source_ids": [ "synfoam-dw-web", "synfoam-dw-pdf-2015" ], "property_source_ids": { "depth_m": [ "synfoam-dw-web" ], "density_kg_m3": [ "synfoam-dw-web" ], "service_mpa": [ "synfoam-dw-web" ], "crush_mpa": [ "synfoam-dw-web" ], "compressive_strength_mpa": [ "synfoam-dw-web" ], "density_tolerance_kg_m3": [ "synfoam-dw-web" ], "compression_basis": [ "synfoam-dw-web" ] }, "density_tolerance_kg_m3": 32.036927, "region_note": null, "conditions": "Water absorption is specified for 24 hours at depth. Temperature, pressure loading history, specimen geometry, and mechanical test standards are not stated.", "notes": [ "Current product webpage selected for displayed properties. Official PDF (copyright 2015) retained as another observation.", "Density and tolerance are converted from published lb/ft³; pressure values converted from published psi.", "Reviewed DW sources do not identify resin chemistry. The old epoxy label was unsupported.", "Crush and compressive strength are distinct reported quantities; no uniaxial test configuration or test standard was specified.", "All grades have a compressive-modulus conflict between webpage and PDF; confirm current technical data sheet with supplier.", "Published extreme-depth ratings are supplier claims, not independently established ocean operating conditions or FoamForge qualification." ], "conflicts": [ { "field": "compressive_strength_mpa", "value": 67.568621, "unit": "MPa", "source_id": "synfoam-dw-pdf-2015", "note": "PDF gives 9,800 psi; current webpage gives 11,250 psi. No revision reconciliation found." }, { "field": "compressive_modulus_psi", "value": 310000, "unit": "psi", "source_id": "synfoam-dw-pdf-2015", "note": "PDF gives 310,000 psi; webpage gives 480,000 psi. Modulus not selected for catalogue display." } ], "reviewed_on": "2026-10-10", "status": "published_reference", "density_basis": "reported density with tolerance", "raw_values": { "depth": { "value": 6250, "unit": "m" }, "density": { "value": 33, "unit": "lb/ft3", "tolerance": 2 }, "service_pressure": { "value": 9340, "unit": "psi" }, "hydrostatic_crush_pressure": { "value": 14250, "unit": "psi" }, "compressive_strength": { "value": 11250, "unit": "psi" }, "compressive_modulus": { "value": 480000, "unit": "psi" } }, "density_note": "Supplier nominal density and ±2 lb/ft³ tolerance converted to kg/m³. This is a tolerance, not a prediction interval." }, { "id": "synfoam-dw-35", "vendor": "SynFoam", "grade": "DW-35", "architecture": "syntactic foam", "matrix": null, "depth_m": 7680, "density_kg_m3": 560.646218, "service_mpa": 79.082866, "crush_mpa": 110.316117, "crush_comparator": "=", "compressive_strength_mpa": 89.631845, "compression_basis": "Compressive strength; test method and loading configuration not specified.", "source_ids": [ "synfoam-dw-web", "synfoam-dw-pdf-2015" ], "property_source_ids": { "depth_m": [ "synfoam-dw-web" ], "density_kg_m3": [ "synfoam-dw-web" ], "service_mpa": [ "synfoam-dw-web" ], "crush_mpa": [ "synfoam-dw-web" ], "compressive_strength_mpa": [ "synfoam-dw-web" ], "density_tolerance_kg_m3": [ "synfoam-dw-web" ], "compression_basis": [ "synfoam-dw-web" ] }, "density_tolerance_kg_m3": 32.036927, "region_note": null, "conditions": "Water absorption is specified for 24 hours at depth. Temperature, pressure loading history, specimen geometry, and mechanical test standards are not stated.", "notes": [ "Current product webpage selected for displayed properties. Official PDF (copyright 2015) retained as another observation.", "Density and tolerance are converted from published lb/ft³; pressure values converted from published psi.", "Reviewed DW sources do not identify resin chemistry. The old epoxy label was unsupported.", "Crush and compressive strength are distinct reported quantities; no uniaxial test configuration or test standard was specified.", "All grades have a compressive-modulus conflict between webpage and PDF; confirm current technical data sheet with supplier.", "Published extreme-depth ratings are supplier claims, not independently established ocean operating conditions or FoamForge qualification." ], "conflicts": [ { "field": "compressive_strength_mpa", "value": 79.289709, "unit": "MPa", "source_id": "synfoam-dw-pdf-2015", "note": "PDF gives 11,500 psi; current webpage gives 13,000 psi. No revision reconciliation found." }, { "field": "compressive_modulus_psi", "value": 250000, "unit": "psi", "source_id": "synfoam-dw-pdf-2015", "note": "PDF gives 250,000 psi; webpage gives 580,000 psi. Modulus not selected for catalogue display." } ], "reviewed_on": "2026-10-10", "status": "published_reference", "density_basis": "reported density with tolerance", "raw_values": { "depth": { "value": 7680, "unit": "m" }, "density": { "value": 35, "unit": "lb/ft3", "tolerance": 2 }, "service_pressure": { "value": 11470, "unit": "psi" }, "hydrostatic_crush_pressure": { "value": 16000, "unit": "psi" }, "compressive_strength": { "value": 13000, "unit": "psi" }, "compressive_modulus": { "value": 580000, "unit": "psi" } }, "density_note": "Supplier nominal density and ±2 lb/ft³ tolerance converted to kg/m³. This is a tolerance, not a prediction interval." }, { "id": "synfoam-dw-37", "vendor": "SynFoam", "grade": "DW-37", "architecture": "syntactic foam", "matrix": null, "depth_m": 8690, "density_kg_m3": 592.683145, "service_mpa": 89.49395, "crush_mpa": 125.484583, "crush_comparator": "=", "compressive_strength_mpa": 95.837126, "compression_basis": "Compressive strength; test method and loading configuration not specified.", "source_ids": [ "synfoam-dw-web", "synfoam-dw-pdf-2015" ], "property_source_ids": { "depth_m": [ "synfoam-dw-web" ], "density_kg_m3": [ "synfoam-dw-web" ], "service_mpa": [ "synfoam-dw-web" ], "crush_mpa": [ "synfoam-dw-web" ], "compressive_strength_mpa": [ "synfoam-dw-web" ], "density_tolerance_kg_m3": [ "synfoam-dw-web" ], "compression_basis": [ "synfoam-dw-web" ] }, "density_tolerance_kg_m3": 32.036927, "region_note": null, "conditions": "Water absorption is specified for 24 hours at depth. Temperature, pressure loading history, specimen geometry, and mechanical test standards are not stated.", "notes": [ "Current product webpage selected for displayed properties. Official PDF (copyright 2015) retained as another observation.", "Density and tolerance are converted from published lb/ft³; pressure values converted from published psi.", "Reviewed DW sources do not identify resin chemistry. The old epoxy label was unsupported.", "Crush and compressive strength are distinct reported quantities; no uniaxial test configuration or test standard was specified.", "All grades have a compressive-modulus conflict between webpage and PDF; confirm current technical data sheet with supplier.", "Published extreme-depth ratings are supplier claims, not independently established ocean operating conditions or FoamForge qualification." ], "conflicts": [ { "field": "compressive_strength_mpa", "value": 88.252893, "unit": "MPa", "source_id": "synfoam-dw-pdf-2015", "note": "PDF gives 12,800 psi; current webpage gives 13,900 psi. No revision reconciliation found." }, { "field": "compressive_modulus_psi", "value": 280000, "unit": "psi", "source_id": "synfoam-dw-pdf-2015", "note": "PDF gives 280,000 psi; webpage gives 600,000 psi. Modulus not selected for catalogue display." } ], "reviewed_on": "2026-10-10", "status": "published_reference", "density_basis": "reported density with tolerance", "raw_values": { "depth": { "value": 8690, "unit": "m" }, "density": { "value": 37, "unit": "lb/ft3", "tolerance": 2 }, "service_pressure": { "value": 12980, "unit": "psi" }, "hydrostatic_crush_pressure": { "value": 18200, "unit": "psi" }, "compressive_strength": { "value": 13900, "unit": "psi" }, "compressive_modulus": { "value": 600000, "unit": "psi" } }, "density_note": "Supplier nominal density and ±2 lb/ft³ tolerance converted to kg/m³. This is a tolerance, not a prediction interval." }, { "id": "synfoam-dw-39", "vendor": "SynFoam", "grade": "DW-39", "architecture": "syntactic foam", "matrix": null, "depth_m": 11730, "density_kg_m3": 624.720072, "service_mpa": 120.796148, "crush_mpa": 134.447767, "crush_comparator": "=", "compressive_strength_mpa": 99.973981, "compression_basis": "Compressive strength; test method and loading configuration not specified.", "source_ids": [ "synfoam-dw-web", "synfoam-dw-pdf-2015" ], "property_source_ids": { "depth_m": [ "synfoam-dw-web" ], "density_kg_m3": [ "synfoam-dw-web" ], "service_mpa": [ "synfoam-dw-web" ], "crush_mpa": [ "synfoam-dw-web" ], "compressive_strength_mpa": [ "synfoam-dw-web" ], "density_tolerance_kg_m3": [ "synfoam-dw-web" ], "compression_basis": [ "synfoam-dw-web" ] }, "density_tolerance_kg_m3": 32.036927, "region_note": null, "conditions": "Water absorption is specified for 24 hours at depth. Temperature, pressure loading history, specimen geometry, and mechanical test standards are not stated.", "notes": [ "Current product webpage selected for displayed properties. Official PDF (copyright 2015) retained as another observation.", "Density and tolerance are converted from published lb/ft³; pressure values converted from published psi.", "Reviewed DW sources do not identify resin chemistry. The old epoxy label was unsupported.", "Crush and compressive strength are distinct reported quantities; no uniaxial test configuration or test standard was specified.", "All grades have a compressive-modulus conflict between webpage and PDF; confirm current technical data sheet with supplier.", "Published extreme-depth ratings are supplier claims, not independently established ocean operating conditions or FoamForge qualification." ], "conflicts": [ { "field": "compressive_modulus_psi", "value": 320000, "unit": "psi", "source_id": "synfoam-dw-pdf-2015", "note": "PDF gives 320,000 psi; webpage gives 625,000 psi. Modulus not selected for catalogue display." } ], "reviewed_on": "2026-10-10", "status": "published_reference", "density_basis": "reported density with tolerance", "raw_values": { "depth": { "value": 11730, "unit": "m" }, "density": { "value": 39, "unit": "lb/ft3", "tolerance": 2 }, "service_pressure": { "value": 17520, "unit": "psi" }, "hydrostatic_crush_pressure": { "value": 19500, "unit": "psi" }, "compressive_strength": { "value": 14500, "unit": "psi" }, "compressive_modulus": { "value": 625000, "unit": "psi" } }, "density_note": "Supplier nominal density and ±2 lb/ft³ tolerance converted to kg/m³. This is a tolerance, not a prediction interval." }, { "id": "synfoam-dw-41", "vendor": "SynFoam", "grade": "DW-41", "architecture": "syntactic foam", "matrix": null, "depth_m": 12500, "density_kg_m3": 656.756998, "service_mpa": 128.725119, "crush_mpa": 159.958369, "crush_comparator": "=", "compressive_strength_mpa": 115.831923, "compression_basis": "Compressive strength; test method and loading configuration not specified.", "source_ids": [ "synfoam-dw-web", "synfoam-dw-pdf-2015" ], "property_source_ids": { "depth_m": [ "synfoam-dw-web" ], "density_kg_m3": [ "synfoam-dw-web" ], "service_mpa": [ "synfoam-dw-web" ], "crush_mpa": [ "synfoam-dw-web" ], "compressive_strength_mpa": [ "synfoam-dw-web" ], "density_tolerance_kg_m3": [ "synfoam-dw-web" ], "compression_basis": [ "synfoam-dw-web" ] }, "density_tolerance_kg_m3": 32.036927, "region_note": null, "conditions": "Water absorption is specified for 24 hours at depth. Temperature, pressure loading history, specimen geometry, and mechanical test standards are not stated.", "notes": [ "Current product webpage selected for displayed properties. Official PDF (copyright 2015) retained as another observation.", "Density and tolerance are converted from published lb/ft³; pressure values converted from published psi.", "Reviewed DW sources do not identify resin chemistry. The old epoxy label was unsupported.", "Crush and compressive strength are distinct reported quantities; no uniaxial test configuration or test standard was specified.", "All grades have a compressive-modulus conflict between webpage and PDF; confirm current technical data sheet with supplier.", "Published extreme-depth ratings are supplier claims, not independently established ocean operating conditions or FoamForge qualification." ], "conflicts": [ { "field": "compressive_modulus_psi", "value": 330000, "unit": "psi", "source_id": "synfoam-dw-pdf-2015", "note": "PDF gives 330,000 psi; webpage gives 650,000 psi. Modulus not selected for catalogue display." } ], "reviewed_on": "2026-10-10", "status": "published_reference", "density_basis": "reported density with tolerance", "raw_values": { "depth": { "value": 12500, "unit": "m" }, "density": { "value": 41, "unit": "lb/ft3", "tolerance": 2 }, "service_pressure": { "value": 18670, "unit": "psi" }, "hydrostatic_crush_pressure": { "value": 23200, "unit": "psi" }, "compressive_strength": { "value": 16800, "unit": "psi" }, "compressive_modulus": { "value": 650000, "unit": "psi" } }, "density_note": "Supplier nominal density and ±2 lb/ft³ tolerance converted to kg/m³. This is a tolerance, not a prediction interval." }, { "id": "trelleborg-tg-2000", "vendor": "Trelleborg", "grade": "TG2000", "architecture": "hollow-glass-microsphere syntactic foam", "matrix": null, "depth_m": 2000, "density_kg_m3": 385, "service_mpa": 20.0, "crush_mpa": null, "crush_comparator": null, "compressive_strength_mpa": null, "compression_basis": null, "source_ids": [ "trelleborg-eccofloat-web", "trelleborg-eccofloat-pdf-2020" ], "property_source_ids": { "depth_m": [ "trelleborg-eccofloat-web" ], "density_kg_m3": [ "trelleborg-eccofloat-web" ], "service_mpa": [ "trelleborg-eccofloat-web" ], "region_note": [ "trelleborg-eccofloat-web" ] }, "density_tolerance_kg_m3": null, "region_note": "Metric range: not available in North America (current product page). The linked 2020-named PDF says not available in the US.", "conditions": "Typical values. No temperature, duration, crush test, or compressive test conditions reported in reviewed TG tables.", "notes": [ "Current webpage selected for display; linked PDF is retained as a separate observation. Neither source supplies a grade-specific TG resin chemistry, density tolerance, hydrostatic crush pressure, or compressive strength. Do not label TG as epoxy merely because DS and EL families are described as epoxy.", "Current webpage spells grade without hyphen; linked PDF spells it with hyphen. Grade alias is traceability only, not an equivalence to an imperial TG grade.", "Service pressure is converted from vendor-published bar, not inferred from depth." ], "conflicts": [], "reviewed_on": "2026-10-10", "status": "published_reference", "density_basis": "typical", "raw_values": { "depth": { "value": 2000, "unit": "m seawater" }, "density": { "value": 385, "unit": "kg/m3" }, "service_pressure": { "value": 200.0, "unit": "bar" } }, "aliases": [ "TG-2000" ], "density_note": "Typical metric-range density from the current webpage; no tolerance stated. Linked PDF differences remain unresolved." }, { "id": "trelleborg-tg-3000", "vendor": "Trelleborg", "grade": "TG3000", "architecture": "hollow-glass-microsphere syntactic foam", "matrix": null, "depth_m": 3000, "density_kg_m3": 415, "service_mpa": 30.0, "crush_mpa": null, "crush_comparator": null, "compressive_strength_mpa": null, "compression_basis": null, "source_ids": [ "trelleborg-eccofloat-web", "trelleborg-eccofloat-pdf-2020" ], "property_source_ids": { "depth_m": [ "trelleborg-eccofloat-web" ], "density_kg_m3": [ "trelleborg-eccofloat-web" ], "service_mpa": [ "trelleborg-eccofloat-web" ], "region_note": [ "trelleborg-eccofloat-web" ] }, "density_tolerance_kg_m3": null, "region_note": "Metric range: not available in North America (current product page). The linked 2020-named PDF says not available in the US.", "conditions": "Typical values. No temperature, duration, crush test, or compressive test conditions reported in reviewed TG tables.", "notes": [ "Current webpage selected for display; linked PDF is retained as a separate observation. Neither source supplies a grade-specific TG resin chemistry, density tolerance, hydrostatic crush pressure, or compressive strength. Do not label TG as epoxy merely because DS and EL families are described as epoxy.", "Current webpage spells grade without hyphen; linked PDF spells it with hyphen. Grade alias is traceability only, not an equivalence to an imperial TG grade.", "Service pressure is converted from vendor-published bar, not inferred from depth." ], "conflicts": [ { "field": "density_kg_m3", "value": 416, "unit": "kg/m3", "source_id": "trelleborg-eccofloat-pdf-2020", "note": "Linked PDF publishes 416; current webpage publishes 415. No supplier reconciliation found; confirm applicable grade/revision before selection." } ], "reviewed_on": "2026-10-10", "status": "published_reference", "density_basis": "typical", "raw_values": { "depth": { "value": 3000, "unit": "m seawater" }, "density": { "value": 415, "unit": "kg/m3" }, "service_pressure": { "value": 300.0, "unit": "bar" } }, "aliases": [ "TG-3000" ], "density_note": "Typical metric-range density from the current webpage; no tolerance stated. Linked PDF differences remain unresolved." }, { "id": "trelleborg-tg-4000", "vendor": "Trelleborg", "grade": "TG4000", "architecture": "hollow-glass-microsphere syntactic foam", "matrix": null, "depth_m": 4000, "density_kg_m3": 468, "service_mpa": 40.0, "crush_mpa": null, "crush_comparator": null, "compressive_strength_mpa": null, "compression_basis": null, "source_ids": [ "trelleborg-eccofloat-web", "trelleborg-eccofloat-pdf-2020" ], "property_source_ids": { "depth_m": [ "trelleborg-eccofloat-web" ], "density_kg_m3": [ "trelleborg-eccofloat-web" ], "service_mpa": [ "trelleborg-eccofloat-web" ], "region_note": [ "trelleborg-eccofloat-web" ] }, "density_tolerance_kg_m3": null, "region_note": "Metric range: not available in North America (current product page). The linked 2020-named PDF says not available in the US.", "conditions": "Typical values. No temperature, duration, crush test, or compressive test conditions reported in reviewed TG tables.", "notes": [ "Current webpage selected for display; linked PDF is retained as a separate observation. Neither source supplies a grade-specific TG resin chemistry, density tolerance, hydrostatic crush pressure, or compressive strength. Do not label TG as epoxy merely because DS and EL families are described as epoxy.", "Current webpage spells grade without hyphen; linked PDF spells it with hyphen. Grade alias is traceability only, not an equivalence to an imperial TG grade.", "Service pressure is converted from vendor-published bar, not inferred from depth." ], "conflicts": [], "reviewed_on": "2026-10-10", "status": "published_reference", "density_basis": "typical", "raw_values": { "depth": { "value": 4000, "unit": "m seawater" }, "density": { "value": 468, "unit": "kg/m3" }, "service_pressure": { "value": 400.0, "unit": "bar" } }, "aliases": [ "TG-4000" ], "density_note": "Typical metric-range density from the current webpage; no tolerance stated. Linked PDF differences remain unresolved." }, { "id": "trelleborg-tg-5000", "vendor": "Trelleborg", "grade": "TG5000", "architecture": "hollow-glass-microsphere syntactic foam", "matrix": null, "depth_m": 5000, "density_kg_m3": 480, "service_mpa": 50.0, "crush_mpa": null, "crush_comparator": null, "compressive_strength_mpa": null, "compression_basis": null, "source_ids": [ "trelleborg-eccofloat-web", "trelleborg-eccofloat-pdf-2020" ], "property_source_ids": { "depth_m": [ "trelleborg-eccofloat-web" ], "density_kg_m3": [ "trelleborg-eccofloat-web" ], "service_mpa": [ "trelleborg-eccofloat-web" ], "region_note": [ "trelleborg-eccofloat-web" ] }, "density_tolerance_kg_m3": null, "region_note": "Metric range: not available in North America (current product page). The linked 2020-named PDF says not available in the US.", "conditions": "Typical values. No temperature, duration, crush test, or compressive test conditions reported in reviewed TG tables.", "notes": [ "Current webpage selected for display; linked PDF is retained as a separate observation. Neither source supplies a grade-specific TG resin chemistry, density tolerance, hydrostatic crush pressure, or compressive strength. Do not label TG as epoxy merely because DS and EL families are described as epoxy.", "Current webpage spells grade without hyphen; linked PDF spells it with hyphen. Grade alias is traceability only, not an equivalence to an imperial TG grade.", "Service pressure is converted from vendor-published bar, not inferred from depth." ], "conflicts": [ { "field": "density_kg_m3", "value": 490, "unit": "kg/m3", "source_id": "trelleborg-eccofloat-pdf-2020", "note": "Linked PDF publishes 490; current webpage publishes 480. No supplier reconciliation found; confirm applicable grade/revision before selection." } ], "reviewed_on": "2026-10-10", "status": "published_reference", "density_basis": "typical", "raw_values": { "depth": { "value": 5000, "unit": "m seawater" }, "density": { "value": 480, "unit": "kg/m3" }, "service_pressure": { "value": 500.0, "unit": "bar" } }, "aliases": [ "TG-5000" ], "density_note": "Typical metric-range density from the current webpage; no tolerance stated. Linked PDF differences remain unresolved." }, { "id": "trelleborg-tg-6000", "vendor": "Trelleborg", "grade": "TG6000", "architecture": "hollow-glass-microsphere syntactic foam", "matrix": null, "depth_m": 6000, "density_kg_m3": 513, "service_mpa": 60.0, "crush_mpa": null, "crush_comparator": null, "compressive_strength_mpa": null, "compression_basis": null, "source_ids": [ "trelleborg-eccofloat-web", "trelleborg-eccofloat-pdf-2020" ], "property_source_ids": { "depth_m": [ "trelleborg-eccofloat-web" ], "density_kg_m3": [ "trelleborg-eccofloat-web" ], "service_mpa": [ "trelleborg-eccofloat-web" ], "region_note": [ "trelleborg-eccofloat-web" ] }, "density_tolerance_kg_m3": null, "region_note": "Metric range: not available in North America (current product page). The linked 2020-named PDF says not available in the US.", "conditions": "Typical values. No temperature, duration, crush test, or compressive test conditions reported in reviewed TG tables.", "notes": [ "Current webpage selected for display; linked PDF is retained as a separate observation. Neither source supplies a grade-specific TG resin chemistry, density tolerance, hydrostatic crush pressure, or compressive strength. Do not label TG as epoxy merely because DS and EL families are described as epoxy.", "Current webpage spells grade without hyphen; linked PDF spells it with hyphen. Grade alias is traceability only, not an equivalence to an imperial TG grade.", "Service pressure is converted from vendor-published bar, not inferred from depth." ], "conflicts": [ { "field": "density_kg_m3", "value": 512, "unit": "kg/m3", "source_id": "trelleborg-eccofloat-pdf-2020", "note": "Linked PDF publishes 512; current webpage publishes 513. No supplier reconciliation found; confirm applicable grade/revision before selection." } ], "reviewed_on": "2026-10-10", "status": "published_reference", "density_basis": "typical", "raw_values": { "depth": { "value": 6000, "unit": "m seawater" }, "density": { "value": 513, "unit": "kg/m3" }, "service_pressure": { "value": 600.0, "unit": "bar" } }, "aliases": [ "TG-6000" ], "density_note": "Typical metric-range density from the current webpage; no tolerance stated. Linked PDF differences remain unresolved." }, { "id": "trelleborg-tg-7000", "vendor": "Trelleborg", "grade": "TG7000", "architecture": "hollow-glass-microsphere syntactic foam", "matrix": null, "depth_m": 7000, "density_kg_m3": 544, "service_mpa": 70.0, "crush_mpa": null, "crush_comparator": null, "compressive_strength_mpa": null, "compression_basis": null, "source_ids": [ "trelleborg-eccofloat-web", "trelleborg-eccofloat-pdf-2020" ], "property_source_ids": { "depth_m": [ "trelleborg-eccofloat-web" ], "density_kg_m3": [ "trelleborg-eccofloat-web" ], "service_mpa": [ "trelleborg-eccofloat-web" ], "region_note": [ "trelleborg-eccofloat-web" ] }, "density_tolerance_kg_m3": null, "region_note": "Metric range: not available in North America (current product page). The linked 2020-named PDF says not available in the US.", "conditions": "Typical values. No temperature, duration, crush test, or compressive test conditions reported in reviewed TG tables.", "notes": [ "Current webpage selected for display; linked PDF is retained as a separate observation. Neither source supplies a grade-specific TG resin chemistry, density tolerance, hydrostatic crush pressure, or compressive strength. Do not label TG as epoxy merely because DS and EL families are described as epoxy.", "Current webpage spells grade without hyphen; linked PDF spells it with hyphen. Grade alias is traceability only, not an equivalence to an imperial TG grade.", "Service pressure is converted from vendor-published bar, not inferred from depth." ], "conflicts": [], "reviewed_on": "2026-10-10", "status": "published_reference", "density_basis": "typical", "raw_values": { "depth": { "value": 7000, "unit": "m seawater" }, "density": { "value": 544, "unit": "kg/m3" }, "service_pressure": { "value": 700.0, "unit": "bar" } }, "aliases": [ "TG-7000" ], "density_note": "Typical metric-range density from the current webpage; no tolerance stated. Linked PDF differences remain unresolved." }, { "id": "trelleborg-tg-11500", "vendor": "Trelleborg", "grade": "TG11500", "architecture": "hollow-glass-microsphere syntactic foam", "matrix": null, "depth_m": 11500, "density_kg_m3": 639, "service_mpa": 115.0, "crush_mpa": null, "crush_comparator": null, "compressive_strength_mpa": null, "compression_basis": null, "source_ids": [ "trelleborg-eccofloat-web", "trelleborg-eccofloat-pdf-2020" ], "property_source_ids": { "depth_m": [ "trelleborg-eccofloat-web" ], "density_kg_m3": [ "trelleborg-eccofloat-web" ], "service_mpa": [ "trelleborg-eccofloat-web" ], "region_note": [ "trelleborg-eccofloat-web" ] }, "density_tolerance_kg_m3": null, "region_note": "Metric range: not available in North America (current product page). The linked 2020-named PDF says not available in the US.", "conditions": "Typical values. No temperature, duration, crush test, or compressive test conditions reported in reviewed TG tables.", "notes": [ "Current webpage selected for display; linked PDF is retained as a separate observation. Neither source supplies a grade-specific TG resin chemistry, density tolerance, hydrostatic crush pressure, or compressive strength. Do not label TG as epoxy merely because DS and EL families are described as epoxy.", "Current webpage spells grade without hyphen; linked PDF spells it with hyphen. Grade alias is traceability only, not an equivalence to an imperial TG grade.", "Service pressure is converted from vendor-published bar, not inferred from depth." ], "conflicts": [ { "field": "density_kg_m3", "value": 660, "unit": "kg/m3", "source_id": "trelleborg-eccofloat-pdf-2020", "note": "Linked PDF publishes 660; current webpage publishes 639. No supplier reconciliation found; confirm applicable grade/revision before selection." } ], "reviewed_on": "2026-10-10", "status": "published_reference", "density_basis": "typical", "raw_values": { "depth": { "value": 11500, "unit": "m seawater" }, "density": { "value": 639, "unit": "kg/m3" }, "service_pressure": { "value": 1150.0, "unit": "bar" } }, "aliases": [ "TG-11500" ], "density_note": "Typical metric-range density from the current webpage; no tolerance stated. Linked PDF differences remain unresolved." } ], "cases": [ { "id": "ess-bluefin-artemis-21", "vendor": "ESS", "title": "Bluefin Artemis 21 AUV case study", "grade": null, "matrix": null, "reported_density_lb_ft3": 30, "density_kg_m3": 480.553901218804, "depth_m": 4500, "source_ids": [ "ess-bluefin" ], "reviewed_on": "2026-10-10", "notes": [ "Source reports specially developed syntactic foam at 30 lb/ft³ rated to 4,500 m. Metric density is a unit conversion, not an additional measurement.", "Case study does not identify AZ-30, resin chemistry, particle grade/blend, loading, cure, porosity, density tolerance, or test protocol. Do not merge its case with AZ-30.", "Historical MH370-linked deployment; page has no publication date. Website footer year is not the date of the deployment." ] } ], "audit_notes": [ "Four current grade PDFs and historical AZ PDF downloaded and visually inspected as full-page images.", "Current BZ and AZ webpage URLs were returned by search, but open returned 404 on 2026-10-10; use live linked PDFs as sources, not a cached page for current availability.", "Copyright 2026 and printed revision codes are preserved without interpreting code as a confirmed publication date.", "No ESS reference in reviewed sources establishes epoxy chemistry. Previous CSV epoxy classification should be removed unless another explicit source is supplied.", "Current PDF service-depth values are retained as vendor statements; discrepancies between depth and pressure are not used to infer a material pressure rating." ] }