Works on just about any surface; including: iron, steel, copper, aluminum, brass, bronze, pewter, porcelain, ceramics, marble, glass, concrete, fiberglass, wood and most plastics. Just squeeze equal parts from the 2 separate 1-oz. tubes onto a mixing surface and mix thorougly with a putty knife or similar tool. Cures in 24 hours and when cured it will withstand temperatures of 600 degrees. It’s waterproof, petroleum-, chemical-, and acid-resistant. It can be drilled, tapped, machined, filed, sanded and painted. Tensile strength of 3960 PSI. The perfect solution for any heavy-duty adhesive job.