... TlG20—250WSE2500.3—8.0Exchange TlG20—315WSE315Carbon steel, stainless steelLow alloy steel0.3—4.0DC TlG5—200WSE2000.3—6.0DC TlG5 ... duty cycle, continuous welding;7 Suitable for welding aluminum, aluminum alloy, carbon steel, stainless steel, copper, titanium, etc.