3A Composites Airex C70.75 Cross-Linked PVC Sandwich Core vs. Diab Divinycell H100 Structural PVC Core
3A Composites Airex C70.75 Cross-Linked PVC Sandwich Core (3A Composites) and Diab Divinycell H100 Structural PVC Core (Diab Group) achieve a 89.9% ASTM engineering compatibility score in Structural Sandwich Cores (PVC, SAN, PET Foam & End-Grain Balsa). Tensile strength delta is -0.8 MPa (-22.9%) and thermal HDT delta is -2 °C, making them interchangeable with post-cure temperature and viscosity flow adjustments.
Side-by-Side ASTM Mechanical, Thermal, Rheological & Pricing Delta
| ASTM Parameter | A: 3A Composites Airex C70.75 Cross-Linked PVC Sandwich Core (3A Composites) | B: Diab Divinycell H100 Structural PVC Core (Diab Group) | Engineering Delta (A vs. B) |
|---|---|---|---|
| OEM Manufacturer & SKU | 3A Composites • 3AC-C70-75-20MM | Diab Group • DIAB-H100-19MM-GS | Cross-Brand OEM Equivalent |
| ASTM D638 Tensile Strength (MPa / PSI) | 2.7 MPa (392 psi) | 3.5 MPa (508 psi) | -0.8 MPa (-22.9 %) |
| ASTM D648 Heat Deflection Temp (HDT °C / °F) | 88 °C (190 °F) | 90 °C (194 °F) | -2 °C (Direct Thermal Match) |
| ASTM D790 Flexural Strength (MPa) | 3.8 MPa | 4.8 MPa | -1 MPa (-20.8 %) |
| ASTM D2583 Barcol Hardness | N/A | N/A | N/A |
| ASTM D2196 Brookfield Viscosity @ 25°C | Solid Reinforcement / Core | Solid Reinforcement / Core | Solid State |
| Gel Time @ 25°C (Minutes) | N/A | N/A | N/A |
| ASTM D792 Specific Density (kg/m³) | 80 kg/m³ | 100 kg/m³ | -20 kg/m³ |
| US DOT 49 CFR & TDG Hazmat Class | Non-Regulated Solid Polymer (N/A) | Non-Regulated (N/A) | Identical (N/A) |
| Unit Price ($/kg USD) & Pack Price | $25.4/kg • $1,219 (Crate of 10 Grooved & Perforated Sheets) | $26.5/kg • $184 (Sheet 1220x2440x19mm (Grid-Scored)) | -1.1 $/kg (-4.2 %) |
| US Stocking Warehouses | DeSoto, TX • Statesville, NC • Tampa, FL | Tampa, FL • Dallas, TX • Mira Loma, CA | 1–3 Days LTL Dispatch |
Companion process stack: Structural Core-Bonding Putty (0.55 kg/m² kerf fill) + Marine Vinyl Ester or Infusion Epoxy Matrix. Follow CORE BEDDING & RESIN UPTAKE: Grid-scored (GS) or grooved/perforated (GP) sheets require ~0.55 kg/m² extra resin for kerf/groove filling or a dedicated structural core-bonding putty.
Direct Drop-In Qualified: Thermal deflection (ASTM D648 HDT) differs by only 2 °C (88 °C vs. 90 °C). Existing mold cure and demold cycles can be maintained without thermal schedule modification.
Identical Hazmat Logistics Profile: Both SKUs ship under US DOT 49 CFR & Transport Canada TDG as Non-Regulated Solid Polymer (UN Number: N/A). Note 49 CFR § 177.848 segregation if ordering with Class 5.2 Organic Peroxides (UN3105).
Engineering FAQ: 3A Composites Airex C70.75 Cross-Linked PVC Sandwich Core vs. Diab Divinycell H100 Structural PVC Core
1. Is 3A Composites Airex C70.75 Cross-Linked PVC Sandwich Core a direct drop-in equivalent for Diab Divinycell H100 Structural PVC Core?▼
3A Composites Airex C70.75 Cross-Linked PVC Sandwich Core (3A Composites) and Diab Divinycell H100 Structural PVC Core (Diab Group) achieve a 89.9% ASTM engineering compatibility score in Structural Sandwich Cores (PVC, SAN, PET Foam & End-Grain Balsa). Tensile strength delta is -0.8 MPa (-22.9%) and thermal HDT delta is -2 °C, making them interchangeable with post-cure temperature and viscosity flow adjustments.
2. What is the ASTM D638 Tensile Strength and ASTM D648 HDT difference between 3A Composites Airex C70.75 Cross-Linked PVC Sandwich Core and Diab Divinycell H100 Structural PVC Core?▼
3A Composites Airex C70.75 Cross-Linked PVC Sandwich Core (3A Composites) delivers ASTM D638 Tensile Strength of 2.7 MPa (392 psi) and ASTM D648 HDT of 88 °C, whereas Diab Divinycell H100 Structural PVC Core (Diab Group) delivers 3.5 MPa (508 psi) and HDT of 90 °C. The net delta is -0.8 MPa (-22.9 %) tensile and -2 °C HDT.
3. Do 3A Composites Airex C70.75 Cross-Linked PVC Sandwich Core and Diab Divinycell H100 Structural PVC Core use the same catalyst or hardener cure system?▼
Companion process stack: Structural Core-Bonding Putty (0.55 kg/m² kerf fill) + Marine Vinyl Ester or Infusion Epoxy Matrix. Follow CORE BEDDING & RESIN UPTAKE: Grid-scored (GS) or grooved/perforated (GP) sheets require ~0.55 kg/m² extra resin for kerf/groove filling or a dedicated structural core-bonding putty. Direct Drop-In Qualified: Thermal deflection (ASTM D648 HDT) differs by only 2 °C (88 °C vs. 90 °C). Existing mold cure and demold cycles can be maintained without thermal schedule modification.
4. How do US DOT 49 CFR Hazmat shipping rules and B2B drum/pack prices compare between 3A Composites Airex C70.75 Cross-Linked PVC Sandwich Core and Diab Divinycell H100 Structural PVC Core?▼
Identical Hazmat Logistics Profile: Both SKUs ship under US DOT 49 CFR & Transport Canada TDG as Non-Regulated Solid Polymer (UN Number: N/A). Note 49 CFR § 177.848 segregation if ordering with Class 5.2 Organic Peroxides (UN3105). In US B2B distribution, 3A Composites Airex C70.75 Cross-Linked PVC Sandwich Core is priced at $1,219 per Crate of 10 Grooved & Perforated Sheets ($25.4/kg) vs. $184 per Sheet 1220x2440x19mm (Grid-Scored) ($26.5/kg) for Diab Divinycell H100 Structural PVC Core (delta: -1.1 USD/kg).
Related Drop-In Comparisons in Structural Sandwich Cores (PVC, SAN, PET Foam & End-Grain Balsa)
3A Composites Airex C70.75 Cross-Linked PVC Sandwich Core (3A Composites) and Diab Divinycell H100 Structural PVC Core (Diab Group) are trademarks of their respective owners. CompositeMatrix Technologies Inc. is an independent North American B2B composite material intelligence registry; comparative ASTM D638, D648, D790, D2583, and D2196 figures are presented under the US legal doctrine of Nominative Fair Use (Lanham Act, 15 U.S.C. § 1125) and Feist Publications, Inc. v. Rural Telephone Service Co. (499 U.S. 340) for scientific and industrial cross-reference. Cure schedules, exotherm behavior, and laminate qualification must be verified by a licensed Naval Architect or Professional Engineer (PE) against current manufacturer batch Technical Data Sheets (TDS) and Safety Data Sheets (SDS).