Introduction:

AWS A5.7 ERCu. ERCu is a filler metal containing 98% or more copper with small amounts of Phosphorus and Silicon used for joining copper to itself or with galvanized or mild steel where high strength joints are not required.  This easy flowing alloy produces weld deposits that match the color of copper, are electrically conductive and porosity free.

Application:

Joining copper pipes, tanks, and copper fittings; joining deoxidized copper; overlay steel surfaces to resist corrosion.