Gas Tungsten Arc Welding (TIG or GTAW)
The TIG (Tungsten Inert Gas) or GTAW (Gas-shielded Tungsten Arc Welding) process employs a non-consumable solid tungsten electrode. The electrode, the arc and the area surrounding the molten weld puddle are protected from the atmosphere by an inert gas shield. If a filler metal is necessary, it is added to the leading edge of the molten puddle.
