TIG Wire (Tungsten Inert Gas Wire) is a critical consumable in TIG welding (also known as Gas Tungsten Arc Welding - GTAW). In this welding process, an external filler wire is used to add material to the weld pool while a non-consumable tungsten electrode creates the arc. TIG welding is known for producing high-quality, precise welds and is often used for applications requiring aesthetic finishes or strong, clean welds without spatter.