Enhance Reliability in Extreme Environments
As industrial sectors—especially electronics, power modules, and electric vehicles—demand adhesives that withstand severe temperatures and harsh conditions, Araldite® AW 4804 / HW 4804 rises to the challenge. This aluminumfilled, twocomponent epoxy offers a unique combination of thermal, mechanical, and chemical resistance, engineered for demanding applications.
■ Technical Highlights
- Outstanding heat resistance up to 210°C after post-cure, ideal for high-temperature operations.
- Aluminum-filled formulation enhances thermal conductivity and mechanical durability.
- Excellent chemical and environmental resistance, performing reliably even after prolonged exposure to fuels, oils, water, and acids.
- Self-leveling viscosity, suitable for both manual and automated dispensing.
- Extended pot life up to 240 minutes, allowing for flexible processing in complex applications.
■ Common Application Areas
- Power module assembly
- Bonding in EV high-temperature zones
- Structural adhesion in industrial sensors
- High-temperature component encapsulation and securing
■ Performance Overview (Standard Specimens):
| Property | Value |
| Lap shear strength (Al-Al) | ~20 MPa |
| Tensile strength | 53 MPa |
| Hardness (Shore D) | 90 |
| Thermal expansion coefficient | 50 × 10⁻⁶ K⁻¹ |
■ Mix Ratio:
| Component | By Weight | By Volume |
| Araldite® AW 4804 | 100 | 100 |
| Hardener HW 4804 | 15 | 28 |