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Which shielding gas works for all TIG applications, all metals and thicknesses?

Argon.

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  1. Carbon dioxide
  2. Oxygen
  3. Argon ✔

Why: Argon is the go-to TIG gas for any metal and any thickness. An argon and helium blend is another option.

Huh, didn't know that: Miller says the argon protects and cools both the tungsten and the weld puddle.

The dad joke
Why did the noble gas cry? Because all of his friends argon.
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References

Answer: Argon. Argon is the go-to TIG gas for any metal and any thickness. An argon and helium blend is another option.

  1. Guide to TIG Welding Basics (Miller) www.millerwelds.com/en-US/resources/knowledge-hub/tig-welding/how-to/guide-to-tig-welding-basics
    Argon can be used for all TIG applications, for all metals and thicknesses.
    Checked 2026-10-10.
  2. TIG It: How a TIG Welder Works (Miller) www.millerwelds.com/en-us/resources/knowledge-hub/tig-welding/how-to/tig-it-how-a-tig-welder-works-and-when-to-tig-weld
    An inert gas, typically argon, protects and cools the tungsten and weld puddle.
    Checked 2026-10-10.

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