COPPER BRAZING ALLOYS

Copper brazing alloys are well known for their excellent resistance to corrosion, high electrical conductivity, and high thermal conductivity and are generally used for brazing carbon and alloy steels, stainless steel, nickel, and copper-nickel. The purpose of the flux is to remove oxides from the base material and to prevent oxidation during the heating process, thus promoting the free flow of the brazing filler metal. However, in copper to copper applications, the phosphorus in BCuP alloys acts as the fluxing agent.

Four processes to consider when joining copper and copper alloys are mechanical couplings, welding, soldering, and brazing. Brazing is suitable for small parts and when high joint strength is required.