what is the strongest glue for metal to metal

According to the search results, the strongest glue for metal to metal is epoxy glue. Epoxy adhesives consist of two parts - the adhesive and the hardener - that combine to create strong, long-lasting bonds between different types of metal or between metal and concrete surfaces. Epoxy glue is specifically designed for bonding metal to metal and is the best option for most people looking to fix metal to another surface. Other types of glue that can be used for metal include polyurethane and super glue. Polyurethanes are water-resistant and UV-resistant, and they dry quickly without becoming brittle. Super glues are based on ethyl cyanoacrylate and are great for creating fast, strong bonds between metal surfaces. However, they cannot fill in gaps. It is important to note that the surfaces to be bonded should be clean and free of oil, rust, and other contaminants for the glue to work effectively.