Gas Tungsten Arc Welding (GTAW) or Tungsten Inert Gas Welding (TIG) have many advantages over other welding processes.  They produce precise high quality welds not possible through other welding processes.

• GTAW is a welding process that utilizes an arc that is formed between a non-consumable tungsten electrode and the base material.   
• In a GTAW process an inert environment needs to be established around the arc for two reasons: on is to stabilize the arc and the second is to protect the molten weld puddle from contaminants in the environment.
• In GTAW there is an electrode that is used to transfer the energy from the torch to the arc.
• These electrodes are made primarily of tungsten however some small material differences in electrode composition are necessary depending on the material to be joined.
• It produces high quality welds that are generally free from defects and spatter as long as the process is done correctly.
• GTAW may be conducted autogenously or if filler is needed in the joint, material may also be added. The autogenous welds may be generated at high speeds.
• GTAW works well with joining materials of a different thickness since precise control may be of welding variables may be exerted. Also because the heat source and filler metal additions are controlled independently.
• GTAW may also be used to join some dissimilar metals to one another.