• Item Name: EPIBOND® 315 A/B
• Manufacturer: Huntsman
• Technologies: Epoxy & Epoxy Derivatives, 2K Structural Adhesive
• Color: Component A – Off-White, Component B – Dark Gray, Mixed – Gray
• Cure Type: Room Temperature / Thermal Post-Cure Options
• Package Size: Contact to Techniq VN for details.
• Shelf Life: 24 months (2–25°C storage), 12 months (18–40°C storage)
EPIBOND® 315 A/B is a two-component, room-temperature curing epoxy structural adhesive designed for service temperatures up to 400°F (204°C). It combines high shear and compressive strength with rapid strength build-up, making it ideal for aerospace applications and composites requiring a liquid shim. The adhesive is easy to use, cures faster than many competitors, and maintains performance under harsh environmental conditions. With low outgassing and excellent aging resistance, it provides a reliable, lightweight alternative to mechanical fasteners while improving productivity and reducing maintenance requirements.
Aerospace Applications: Aircraft, Honeycomb Composites, Space Shuttle, Spacecraft
Substrates: Metals, Composites
Product End Uses: Liquid shim applications
Application Method: Spatula or dual-barrel cartridge with static mixer
Industry Benefits: Increases throughput up to 80%, reduces maintenance, allows room-temperature curing, fast handling strength, and high-temperature service
Before Mixing
| Property | Value | Unit | Test Method / Condition |
|---|---|---|---|
| Mix Ratio (Hardener:Resin) | 0.615 | % (W) | – |
| Resin Color | Off-White | – | – |
| Hardener Color | Dark Gray | – | – |
| Mixed Color | Gray | – | – |
| Viscosity (1/s shear rate) | A: 650,000 B:165,000 | cP | – |
| Gel Time (20g, 25°C) | 90 | min | – |
| Working Time (nozzle) | 60 | min | – |
After Mixing / Cured
| Property | Value | Unit | Test Method / Condition |
|---|---|---|---|
| Lap Shear Strength | 5,000–5,500 | psi | ASTM D1002, Al, 25–77°F, 5 days |
| Compressive Strength | 12,000–35,000 | psi | ASTM D695, Ultimate/2% Offset |
| Hardness | 85 | Shore D | ASTM D2240, 25°C |
| Thermal Analysis / Tg | 125 | °C | DMA E onset |
| Coefficient of Thermal Expansion | 67.5–127.3 x10⁻⁶ | mm/mm/°C | CTE Below/Above Tg |
| T-Peel Strength | 2.1 | N/mm | Room Temperature |
| Service Temperature Limit | 204 | °C | Maximum operating temperature |
| Outgassing | 0.02–0.65 | % | ASTM E595, CVCM/TML |
| Environmental Resistance | – | – | Water, Hydraulic Fluid, Lubrication Oil, Jet A testing |
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