TIG, or Tungsten Inert Gas welding, is a process that uses a non-consumable tungsten electrode to produce a weld. It is known for its ability to create high-quality, precise welds on a variety of metals, including stainless steel and aluminum. The process involves shielding the weld area with an inert gas, typically argon, to protect it from contamination. TIG welding is often used in industries that require strong and clean welds, such as aerospace and automotive manufacturing. It allows for greater control over the welding process, making it suitable for both thin and thick materials. This versatility makes TIG a popular choice among professional welders.