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What is tungsten inert gas welding (TIG)

Tungsten inert gas welding (TIG)

Today I will be discussing on tungsten inert gas welding and its components and applications. Previously, some articles were published on stud welding. Check out!

What is TIG Welding?

TIG welding

Tungsten inert gas welding is also known as gas tungsten inert arc welding (GTAW). It an arc welding process that uses a non-consumable tungsten electrode. The electrode is protected from atmospheric contamination or oxidation by an inert shielding gas (a mixture of argon or helium). Filler metal maybe and may not be added for those autogenous welds. An electrical energy transfers current through a Colum of highly ionized gas and metal vapors, which is known as plasma.

This welding process became success in the 1940s for joining aluminum and magnesium. It uses an inert gas shield to protect the weld, unlike other arc welding process that uses slag. The followings are the component of TIG welding:

  • AC or DC power supply
  • Non-consumable tungsten electrode
  • Inert gas supply
  • Welding head


The followings are the applications of this welding process

  • It is widely used in aerospace industries
  • Industries uses TIG welding on thin workpiece, especially nonferrous metals
  • It is used in the manufacturing of space vehicles
  • TIG welding is suitable on small diameter, thin wall tubing, making it applicable in bicycle industries
  • It is used to repair and manufacture of works
  • The process is used to repair tools and die, especially one made of aluminum and magnesium.

Some material applications of TIG welding include:

Stainless steel, alloy steel, aluminum, titanium, copper, magnesium, nickel alloys

Also check:

And that is it for this article, TIG welding. I hope you enjoy reading it. If so,  comment and share to help other get this. Thanks for reading!

One comment

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