IG, or Tungsten Inert Gas welding. This process is also called GTAW (Gas Tungsten Arc Welding) and Heliarc® which was Linde's trade name for the TIG process when it was introduced many years ago.

This process generates heat from an electric arc that is maintained between a non-consumable tungsten electrode and the part being welded. The arc is started with a tungsten electrode shielded by inert gas and filler rod is fed into the weld puddle separately.

Similar in technique to gas welding, TIG is a slower process than MIG and it takes longer to learn than MIG welding, but it produces a more precise weld and can be used at lower amperages for thinner metal. It also can be used on exotic metals.

TIG is required for certain work, such as welding chrome moly for racing organizations, and detailed, intricate work such as gunsmithing also benefits from TIG. Used by many people in the automobile restoration business, TIG produces a precise, perfect finish that requires little or no finish work.

Welding and Associates offers experienced precision TIG welding for aluminum, stainless steel, mild steel, and titanium.