Introduction:

AWS A5.7 ERCuSi-A. ERCuSi-A Silicon Bronze is a copper-base alloy containing approximately 3% silicon. It is primarily used for MIG, TIG and gas welding of copper, copper-silicon and copper-zinc base metals to themselves and to steel.

Application:

It is particularly suited to weld galvanized steels since it does not destroy the zinc coating in the vicinity of the weld, thereby retaining its corrosion protection, while the bronze weld metal itself is highly corrosion resistant.