Gurit Ampreg 31 DNV-GL Certified Laminating Epoxy vs. Gurit Prime 37 Infusion Epoxy System
Gurit Ampreg 31 DNV-GL Certified Laminating Epoxy (Gurit) and Gurit Prime 37 Infusion Epoxy System (Gurit) achieve a 97.5% ASTM engineering compatibility score in Structural Infusion & Laminating Epoxy Systems. Tensile strength delta is +2 MPa (+2.5%) and thermal HDT delta is +1 °C, making them qualified for direct drop-in substitution under standard cure schedules.
Side-by-Side ASTM Mechanical, Thermal, Rheological & Pricing Delta
| ASTM Parameter | A: Gurit Ampreg 31 DNV-GL Certified Laminating Epoxy (Gurit) | B: Gurit Prime 37 Infusion Epoxy System (Gurit) | Engineering Delta (A vs. B) |
|---|---|---|---|
| OEM Manufacturer & SKU | Gurit • GUR-AMP31-200KG | Gurit • GUR-PRM37-200KG | Same OEM Portfolio |
| ASTM D638 Tensile Strength (MPa / PSI) | 81 MPa (11,748 psi) | 79 MPa (11,458 psi) | +2 MPa (+2.5 %) |
| ASTM D648 Heat Deflection Temp (HDT °C / °F) | 89 °C (192 °F) | 88 °C (190 °F) | +1 °C (Direct Thermal Match) |
| ASTM D790 Flexural Strength (MPa) | 125 MPa | 124 MPa | +1 MPa (+0.8 %) |
| ASTM D2583 Barcol Hardness | 42 | 42 | 0 Barcol |
| ASTM D2196 Brookfield Viscosity @ 25°C | 420 cPs | 245 cPs | +175 cPs (+71.4 %) |
| Gel Time @ 25°C (Minutes) | 52 min | 48 min | +4 min |
| ASTM D792 Specific Density (kg/m³) | 1145 kg/m³ | 1140 kg/m³ | +5 kg/m³ |
| US DOT 49 CFR & TDG Hazmat Class | Class 9 Environmentally Hazardous (UN3082) | Class 9 Environmentally Hazardous (UN3082) | Identical (UN3082) |
| Unit Price ($/kg USD) & Pack Price | $15.4/kg • $3,080 (200 kg Drum Kit) | $14.8/kg • $2,960 (200 kg Drum Kit) | +0.6 $/kg (+4.1 %) |
| US Stocking Warehouses | Bay City, MI • Tampa, FL • Seattle, WA | Tampa, FL • Rhode Island, RI • Seattle, WA | 1–3 Days LTL Dispatch |
Both systems utilize stoichiometric Amine / Polyetheramine Hardeners. Verify exact mix ratio by weight (pbw) on the batch TDS before metering—never substitute hardeners across manufacturers without DSC glass-transition (Tg) qualification.
Direct Drop-In Qualified: Thermal deflection (ASTM D648 HDT) differs by only 1 °C (89 °C vs. 88 °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 Class 9 Environmentally Hazardous (UN Number: UN3082). Note 49 CFR § 177.848 segregation if ordering with Class 5.2 Organic Peroxides (UN3105).
Engineering FAQ: Gurit Ampreg 31 DNV-GL Certified Laminating Epoxy vs. Gurit Prime 37 Infusion Epoxy System
1. Is Gurit Ampreg 31 DNV-GL Certified Laminating Epoxy a direct drop-in equivalent for Gurit Prime 37 Infusion Epoxy System?▼
Gurit Ampreg 31 DNV-GL Certified Laminating Epoxy (Gurit) and Gurit Prime 37 Infusion Epoxy System (Gurit) achieve a 97.5% ASTM engineering compatibility score in Structural Infusion & Laminating Epoxy Systems. Tensile strength delta is +2 MPa (+2.5%) and thermal HDT delta is +1 °C, making them qualified for direct drop-in substitution under standard cure schedules.
2. What is the ASTM D638 Tensile Strength and ASTM D648 HDT difference between Gurit Ampreg 31 DNV-GL Certified Laminating Epoxy and Gurit Prime 37 Infusion Epoxy System?▼
Gurit Ampreg 31 DNV-GL Certified Laminating Epoxy (Gurit) delivers ASTM D638 Tensile Strength of 81 MPa (11,748 psi) and ASTM D648 HDT of 89 °C, whereas Gurit Prime 37 Infusion Epoxy System (Gurit) delivers 79 MPa (11,458 psi) and HDT of 88 °C. The net delta is +2 MPa (+2.5 %) tensile and +1 °C HDT.
3. Do Gurit Ampreg 31 DNV-GL Certified Laminating Epoxy and Gurit Prime 37 Infusion Epoxy System use the same catalyst or hardener cure system?▼
Both systems utilize stoichiometric Amine / Polyetheramine Hardeners. Verify exact mix ratio by weight (pbw) on the batch TDS before metering—never substitute hardeners across manufacturers without DSC glass-transition (Tg) qualification. Direct Drop-In Qualified: Thermal deflection (ASTM D648 HDT) differs by only 1 °C (89 °C vs. 88 °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 Gurit Ampreg 31 DNV-GL Certified Laminating Epoxy and Gurit Prime 37 Infusion Epoxy System?▼
Identical Hazmat Logistics Profile: Both SKUs ship under US DOT 49 CFR & Transport Canada TDG as Class 9 Environmentally Hazardous (UN Number: UN3082). Note 49 CFR § 177.848 segregation if ordering with Class 5.2 Organic Peroxides (UN3105). In US B2B distribution, Gurit Ampreg 31 DNV-GL Certified Laminating Epoxy is priced at $3,080 per 200 kg Drum Kit ($15.4/kg) vs. $2,960 per 200 kg Drum Kit ($14.8/kg) for Gurit Prime 37 Infusion Epoxy System (delta: +0.6 USD/kg).
Related Drop-In Comparisons in Structural Infusion & Laminating Epoxy Systems
Gurit Ampreg 31 DNV-GL Certified Laminating Epoxy (Gurit) and Gurit Prime 37 Infusion Epoxy System (Gurit) 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).