Bare copper wire for the GTAW joining of copper-zinc alloys and low-alloyed copper alloys. OK Tigrod 19.30 is alloyed with silicon and manganese and has good flow properties and wear resistance. The alloy is widely used in the joining of zinc-coated steel sheets andfor joining low- and non-alloyed steels and cast iron. OK Tigrod 19.30 is normally welded with pure Ar as the shielding gas.