I have a bottle of trimix gas that I bought years ago to try on stainless. I have only used it once as I rarely weld stainless. Now that I have a TIG welder, I am even less likely to use it.
Is it OK to use the trimix on mild steel just to use it up? I have tried it, but I think that the argon/CO2 mix welds better. Would trimix compromise mild steel welds in any way?
Thanks.
- Otto Nobedder
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Weldmonger
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Joined:Thu Jan 06, 2011 11:40 pm
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Location:Near New Orleans
I LOVE to use tri-mix (90%He, 7.5%AR, 2.5%CO2) on carbon steel, and I get away with it at work despite the cost.
The weld is hotter for more penetration, and when dialed in "just so" leaves so little spatter that spatter-spray is not needed.
You will harm nothing, and improve your penetration for the same settings.
Use it up, and enjoy it while you can.
Steve S
The weld is hotter for more penetration, and when dialed in "just so" leaves so little spatter that spatter-spray is not needed.
You will harm nothing, and improve your penetration for the same settings.
Use it up, and enjoy it while you can.
Steve S
450dualsport
- 450dualsport
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Guide
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Joined:Wed Oct 30, 2013 10:46 am
Well, that settles that! 
Thanks for the info.
I will enjoy it while I can, which probably won't be long because it is only a 50 cu/ft cylinder. When it's empty, I will trade it in for a 125 cu/ft Argon/CO2 cylinder. When I emptied my last Argon/CO2 cylinder, I traded it for some Helium. My LWS is really good that way.
Thanks for the info. I will enjoy it while I can, which probably won't be long because it is only a 50 cu/ft cylinder. When it's empty, I will trade it in for a 125 cu/ft Argon/CO2 cylinder. When I emptied my last Argon/CO2 cylinder, I traded it for some Helium. My LWS is really good that way.