... , low alloy steel. 2. Welding stainless steel, high alloy steel, copper, silver, molybdenum ZX7-160S, ZX7-200S, ZX7-250S, ZX7-315S, ZX7 ... , low alloy steel.2. Welding stainless steel, high alloy steel, copper, silver, molybdenum, titanium and other metals. Characteristics:Ideal static external characteristics ...