[TheForge] Question re: inert gases for welding.

[Larry and Pat Brown]

Nitrogen causes enbrittlement of the weld and cracking failures. This has 
to be watched for cutting thick pieces with a plasma cutter and then arc 
welding the edges. (According to a dealer, I can't afford to have this 
problem yet)
L Brown


At 01:26 PM 9/8/2004 -0400, you wrote:
>Hydrogen is sometimes mixed into TIG inert gas.  CO2 is sometimes used
>in or as MIG inert gas.  Otherwise, the nobel gases (He, Ar) are used.
>
>What about nitrogen?  Nitrogen can harden steel.  Could this be
>beneficial.
>
>This is idle curiosity, BTW.
>
>Bruce
>NJ
>
>
>
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