PERMABOND® ET5424 is a High-Temperature resistant Two-Part Epoxy Adhesive. It is a high-performance, two-part structural epoxy adhesive engineered primarily for the aerospace industry and demanding industrial applications. Combining a long open time with exceptional thermal resistance following a low-temperature or room-temperature cure, it is ideally suited for bonding large surface areas, batch production processes, and assemblies undergoing powder coat baking. Formulated with reduced hazards on the Safety Data Sheet (SDS), ET5424 supports a safer working environment while meeting the stringent thermal vacuum outgassing requirements of ECSS-Q-ST-70-02C for space applications.
ET5424 cures at room temperature to form a very strong bond. With a service temperature of 230°C, it is ideal for bonding parts that later need to undergo powder coating or paint baking. ET5424 will withstand the temperatures of the oven curing the paint, all the while providing an even stress distribution throughout the joints.
When compared to welding, ET5424 provides a 100% watertight seal and leaves no pin prick holes or unsightly stress areas. In addition, there is no specialist equipment or high skill level required, and the
hazards are far lower. It can also be used in ATEX areas where welding is not allowed.
Key Features & Benefits:- High Temperature Resistance: Achieves a high glass transition temperature of 182 °C (360 °F) even after a low-temperature cure, withstanding powder coat baking and brief high-temperature exposures.
- Aerospace & Space Qualified: Meets ECSS-Q-ST-70-02C thermal vacuum outgassing standards for space materials.
- Long Open Time: 4-hour pot life (10 g at 23 °C) enables precise alignment on large bond areas and efficient batch manufacturing.
- High Structural Shear Strength: Delivers strong, durable bonds across metals and composites, frequently achieving substrate failure on carbon fibre and FRP.
Propperties:Description: Two-part epoxy
Appearance: Dark grey (mixed)
Mix ratio: 4:1
Viscosity: ~200,000 mPas (mixed)
Shear Strength (mPa @23°C): Aluminium: 22-27 / Mild Steel: 20-25 / Stainless Steel: 24-29 / Carbon Fibre: >20 **SF
Full cure 23°C - 3-5 days / 66°C - 1 hour
