TIG is an all-round welding method, where the properties of the welding closely resemble those of the original material. TIG is short for Tungsten Inert Gas. Tungsten is the same as Wolfram, the material of which the welding electrode is made. TIG welding can be used on all weldable materials. The method is typically used for welding thin materials (typically up to 3 mm) and often for welding in stainless steel or aluminium. TIG welding can be done by an automaton, a robot or manually with or without the use of welding wire.
During TIG welding an inactive gas passes through the welding head onto the item. The gas, argon or helium, seals the welding and thus protects against oxygen and other gasses from the atmosphere.