There are two types of TIG welding prcoesses available.
DC is used to weld mild steel, stainless steel, copper & brass, inconel and titanium etc.
AC is used to weld Aluminium and other alloys.
You can buy either a DC TIG Welder or an AC/DC TIG Welder
You will need to use 100% Pure Argon for shielding gas.
See our range of TIG Welders