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Old 05-07-2014, 03:26 PM   #1
lowrollin70gmc
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Re: Welding Setup

Tig requires 100% argon for steel, otherwise the tungsten will burn up. Old timers have also used helium but argon is cheaper.
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Old 05-07-2014, 05:25 PM   #2
ERASER5
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Re: Welding Setup

Quote:
Originally Posted by lowrollin70gmc View Post
Tig requires 100% argon for steel, otherwise the tungsten will burn up. Old timers have also used helium but argon is cheaper.
Helium make a hotter spark. Not needed on steel. But on aluminum, Helium can make the difference. TIG started as Heli-Arc for welding air plane frames.

Helium is too expensive just to have around the garage though. It is also in short supply now.
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