Stainless MIG Wire

Metal Shop
1

I have a 30# spool of 304 stainless wire. Either .030-.035. I believe argon can be used as the gas. Are we able to hook up argon that is on the TIG machine?

2

I’m pretty sure you need to use trimix when you’re welding 3xx series stainless.

3
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4

You might just try running the Ar/CO2 mix we already have on the wire-feed machine and see how it does.

I’ve done some 308 stainless with TIG and pure Ar with good results, but I agree that additional gasses would help (He specifically).

5

Argon works to prevent oxiidation but He will produce a better/different plasma arc characteristics. But Zack has said, 80/20 will work unless say doing nuclear reactor welding. Now if you were Chris Carson just to be safe I’d say get He.

6

Thanks for the advice.