Devweld 531 is a two-part 1:1 ratio methacrylate adhesive designed for structural bonding of thermoplastic, metal and composite assemblies. Devweld 531 is particularly well suited for bonding thermoplastic materials and combines high strength and stiffness with the ability to adhere difficult-to-bond materials. Features: Excellent shear, peel and impact strength. Non-sagging. Will fill gaps of up to 4mm. Excellent load bearing qualities. Resistant to weathering and humidity. Specifically designed for difficult-to-bond. Room temperature cure. No surface preparation. 100% reactive.