ITW Plexus MA300 Rapid-Cure Methacrylate Structural Adhesive vs. ITW Plexus MA310 Structural Methacrylate Adhesive
ITW Plexus MA300 Rapid-Cure Methacrylate Structural Adhesive (ITW Performance Polymers) and ITW Plexus MA310 Structural Methacrylate Adhesive (ITW Performance Polymers) achieve a 94% ASTM engineering compatibility score in Marine ISO/NPG Gelcoats, Structural Bonding Pastes & Mold Releases. Tensile strength delta is +1.8 MPa (+8.7%) and thermal HDT delta is +4 °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: ITW Plexus MA300 Rapid-Cure Methacrylate Structural Adhesive (ITW Performance Polymers) | B: ITW Plexus MA310 Structural Methacrylate Adhesive (ITW Performance Polymers) | Engineering Delta (A vs. B) |
|---|---|---|---|
| OEM Manufacturer & SKU | ITW Performance Polymers • ITW-MA300-CASE | ITW Performance Polymers • ITW-MA310-50GAL | Same OEM Portfolio |
| ASTM D638 Tensile Strength (MPa / PSI) | 22.5 MPa (3,263 psi) | 20.7 MPa (3,002 psi) | +1.8 MPa (+8.7 %) |
| ASTM D648 Heat Deflection Temp (HDT °C / °F) | 82 °C (180 °F) | 78 °C (172 °F) | +4 °C (Direct Thermal Match) |
| ASTM D790 Flexural Strength (MPa) | 40.5 MPa | 34.5 MPa | +6 MPa (+17.4 %) |
| ASTM D2583 Barcol Hardness | 40 | 35 | +5 Barcol |
| ASTM D2196 Brookfield Viscosity @ 25°C | 110000 cPs | 125000 cPs | -15000 cPs (-12 %) |
| Gel Time @ 25°C (Minutes) | 20 min | 18 min | +2 min |
| ASTM D792 Specific Density (kg/m³) | 1120 kg/m³ | 980 kg/m³ | +140 kg/m³ |
| US DOT 49 CFR & TDG Hazmat Class | Class 3 Flammable Liquid (UN1133) | Class 3 Flammable Liquid (UN1133) | Identical (UN1133) |
| Unit Price ($/kg USD) & Pack Price | $29.5/kg • $590 (19 L Industrial Pail) | $28.4/kg • $540 (19 L Pail (5 Gal Drum)) | +1.1 $/kg (+3.9 %) |
| US Stocking Warehouses | Hickory, NC • Danvers, MA • Tampa, FL | Danvers, MA • Tampa, FL • Mira Loma, CA | 1–3 Days LTL Dispatch |
Both matrices cross-link via free-radical polymerization using 1.25%–2.0% MEKP (Methyl Ethyl Ketone Peroxide, UN3105) or Cumene Hydroperoxide (CHP) with Cobalt Octoate promoter. Low-hydrogen-peroxide MEKP (e.g., Norox MEKP-925H) is recommended to eliminate micro-foaming.
Direct Drop-In Qualified: Thermal deflection (ASTM D648 HDT) differs by only 4 °C (82 °C vs. 78 °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 3 Flammable Liquid (UN Number: UN1133). Note 49 CFR § 177.848 segregation if ordering with Class 5.2 Organic Peroxides (UN3105).
Engineering FAQ: ITW Plexus MA300 Rapid-Cure Methacrylate Structural Adhesive vs. ITW Plexus MA310 Structural Methacrylate Adhesive
1. Is ITW Plexus MA300 Rapid-Cure Methacrylate Structural Adhesive a direct drop-in equivalent for ITW Plexus MA310 Structural Methacrylate Adhesive?▼
ITW Plexus MA300 Rapid-Cure Methacrylate Structural Adhesive (ITW Performance Polymers) and ITW Plexus MA310 Structural Methacrylate Adhesive (ITW Performance Polymers) achieve a 94% ASTM engineering compatibility score in Marine ISO/NPG Gelcoats, Structural Bonding Pastes & Mold Releases. Tensile strength delta is +1.8 MPa (+8.7%) and thermal HDT delta is +4 °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 ITW Plexus MA300 Rapid-Cure Methacrylate Structural Adhesive and ITW Plexus MA310 Structural Methacrylate Adhesive?▼
ITW Plexus MA300 Rapid-Cure Methacrylate Structural Adhesive (ITW Performance Polymers) delivers ASTM D638 Tensile Strength of 22.5 MPa (3,263 psi) and ASTM D648 HDT of 82 °C, whereas ITW Plexus MA310 Structural Methacrylate Adhesive (ITW Performance Polymers) delivers 20.7 MPa (3,002 psi) and HDT of 78 °C. The net delta is +1.8 MPa (+8.7 %) tensile and +4 °C HDT.
3. Do ITW Plexus MA300 Rapid-Cure Methacrylate Structural Adhesive and ITW Plexus MA310 Structural Methacrylate Adhesive use the same catalyst or hardener cure system?▼
Both matrices cross-link via free-radical polymerization using 1.25%–2.0% MEKP (Methyl Ethyl Ketone Peroxide, UN3105) or Cumene Hydroperoxide (CHP) with Cobalt Octoate promoter. Low-hydrogen-peroxide MEKP (e.g., Norox MEKP-925H) is recommended to eliminate micro-foaming. Direct Drop-In Qualified: Thermal deflection (ASTM D648 HDT) differs by only 4 °C (82 °C vs. 78 °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 ITW Plexus MA300 Rapid-Cure Methacrylate Structural Adhesive and ITW Plexus MA310 Structural Methacrylate Adhesive?▼
Identical Hazmat Logistics Profile: Both SKUs ship under US DOT 49 CFR & Transport Canada TDG as Class 3 Flammable Liquid (UN Number: UN1133). Note 49 CFR § 177.848 segregation if ordering with Class 5.2 Organic Peroxides (UN3105). In US B2B distribution, ITW Plexus MA300 Rapid-Cure Methacrylate Structural Adhesive is priced at $590 per 19 L Industrial Pail ($29.5/kg) vs. $540 per 19 L Pail (5 Gal Drum) ($28.4/kg) for ITW Plexus MA310 Structural Methacrylate Adhesive (delta: +1.1 USD/kg).
Related Drop-In Comparisons in Marine ISO/NPG Gelcoats, Structural Bonding Pastes & Mold Releases
ITW Plexus MA300 Rapid-Cure Methacrylate Structural Adhesive (ITW Performance Polymers) and ITW Plexus MA310 Structural Methacrylate Adhesive (ITW Performance Polymers) 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).