Interplastic CoREZYN COR75-AQ-010 Lloyd's Marine Iso Polyester vs. Interplastic Silmar SIL95BA-41 Crystal Clear Surfboard Polyester
Interplastic CoREZYN COR75-AQ-010 Lloyd's Marine Iso Polyester (Interplastic Corp) and Interplastic Silmar SIL95BA-41 Crystal Clear Surfboard Polyester (Interplastic Corp) achieve a 68% ASTM engineering compatibility score in Structural Sandwich Cores (PVC, SAN, PET Foam & End-Grain Balsa). Tensile strength delta is +8 MPa (+12.1%) and thermal HDT delta is +19 °C, making them interchangeable with post-cure temperature and viscosity flow adjustments.
Side-by-Side ASTM Mechanical, Thermal, Rheological & Pricing Delta
| ASTM Parameter | A: Interplastic CoREZYN COR75-AQ-010 Lloyd's Marine Iso Polyester (Interplastic Corp) | B: Interplastic Silmar SIL95BA-41 Crystal Clear Surfboard Polyester (Interplastic Corp) | Engineering Delta (A vs. B) |
|---|---|---|---|
| OEM Manufacturer & SKU | Interplastic Corp • IPC-COR75AQ | Interplastic Corp • IPC-SIL95BA | Same OEM Portfolio |
| ASTM D638 Tensile Strength (MPa / PSI) | 74 MPa (10,733 psi) | 66 MPa (9,573 psi) | +8 MPa (+12.1 %) |
| ASTM D648 Heat Deflection Temp (HDT °C / °F) | 94 °C (201 °F) | 75 °C (167 °F) | +19 °C (Verify Post-Cure) |
| ASTM D790 Flexural Strength (MPa) | 122 MPa | 114 MPa | +8 MPa (+7 %) |
| ASTM D2583 Barcol Hardness | 40 | 40 | 0 Barcol |
| ASTM D2196 Brookfield Viscosity @ 25°C | 490 cPs | 460 cPs | +30 cPs (+6.5 %) |
| Gel Time @ 25°C (Minutes) | 24 min | 24 min | 0 min |
| ASTM D792 Specific Density (kg/m³) | 1115 kg/m³ | 1115 kg/m³ | 0 kg/m³ |
| US DOT 49 CFR & TDG Hazmat Class | Class 3 Flammable Liquid (UN1866) | Class 3 Flammable Liquid (UN1866) | Identical (UN1866) |
| Unit Price ($/kg USD) & Pack Price | $7.4/kg • $1,665 (225 kg Steel Drum) | $7.8/kg • $1,755 (225 kg Steel Drum) | -0.4 $/kg (-5.1 %) |
| US Stocking Warehouses | Lakeland, FL • Houston, TX • Minneapolis, MN | Lakeland, FL • Houston, TX • Minneapolis, MN | 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.
Post-Cure Schedule Adjustment Advised: ASTM D648 HDT differs by 19 °C (94 °C vs. 75 °C). For elevated-temperature tooling or dark-colored marine hulls, perform a 4–6 hour post-cure ramp at 60–80 °C (140–176 °F) to lock in full cross-link density.
Identical Hazmat Logistics Profile: Both SKUs ship under US DOT 49 CFR & Transport Canada TDG as Class 3 Flammable Liquid (UN Number: UN1866). Note 49 CFR § 177.848 segregation if ordering with Class 5.2 Organic Peroxides (UN3105).
Engineering FAQ: Interplastic CoREZYN COR75-AQ-010 Lloyd's Marine Iso Polyester vs. Interplastic Silmar SIL95BA-41 Crystal Clear Surfboard Polyester
1. Is Interplastic CoREZYN COR75-AQ-010 Lloyd's Marine Iso Polyester a direct drop-in equivalent for Interplastic Silmar SIL95BA-41 Crystal Clear Surfboard Polyester?▼
Interplastic CoREZYN COR75-AQ-010 Lloyd's Marine Iso Polyester (Interplastic Corp) and Interplastic Silmar SIL95BA-41 Crystal Clear Surfboard Polyester (Interplastic Corp) achieve a 68% ASTM engineering compatibility score in Structural Sandwich Cores (PVC, SAN, PET Foam & End-Grain Balsa). Tensile strength delta is +8 MPa (+12.1%) and thermal HDT delta is +19 °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 Interplastic CoREZYN COR75-AQ-010 Lloyd's Marine Iso Polyester and Interplastic Silmar SIL95BA-41 Crystal Clear Surfboard Polyester?▼
Interplastic CoREZYN COR75-AQ-010 Lloyd's Marine Iso Polyester (Interplastic Corp) delivers ASTM D638 Tensile Strength of 74 MPa (10,733 psi) and ASTM D648 HDT of 94 °C, whereas Interplastic Silmar SIL95BA-41 Crystal Clear Surfboard Polyester (Interplastic Corp) delivers 66 MPa (9,573 psi) and HDT of 75 °C. The net delta is +8 MPa (+12.1 %) tensile and +19 °C HDT.
3. Do Interplastic CoREZYN COR75-AQ-010 Lloyd's Marine Iso Polyester and Interplastic Silmar SIL95BA-41 Crystal Clear Surfboard Polyester 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. Post-Cure Schedule Adjustment Advised: ASTM D648 HDT differs by 19 °C (94 °C vs. 75 °C). For elevated-temperature tooling or dark-colored marine hulls, perform a 4–6 hour post-cure ramp at 60–80 °C (140–176 °F) to lock in full cross-link density.
4. How do US DOT 49 CFR Hazmat shipping rules and B2B drum/pack prices compare between Interplastic CoREZYN COR75-AQ-010 Lloyd's Marine Iso Polyester and Interplastic Silmar SIL95BA-41 Crystal Clear Surfboard Polyester?▼
Identical Hazmat Logistics Profile: Both SKUs ship under US DOT 49 CFR & Transport Canada TDG as Class 3 Flammable Liquid (UN Number: UN1866). Note 49 CFR § 177.848 segregation if ordering with Class 5.2 Organic Peroxides (UN3105). In US B2B distribution, Interplastic CoREZYN COR75-AQ-010 Lloyd's Marine Iso Polyester is priced at $1,665 per 225 kg Steel Drum ($7.4/kg) vs. $1,755 per 225 kg Steel Drum ($7.8/kg) for Interplastic Silmar SIL95BA-41 Crystal Clear Surfboard Polyester (delta: -0.4 USD/kg).
Related Drop-In Comparisons in Structural Sandwich Cores (PVC, SAN, PET Foam & End-Grain Balsa)
Interplastic CoREZYN COR75-AQ-010 Lloyd's Marine Iso Polyester (Interplastic Corp) and Interplastic Silmar SIL95BA-41 Crystal Clear Surfboard Polyester (Interplastic Corp) 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).