Welding Stainless

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Welding Stainless

Postby N law » Wed Jul 09, 2014 2:04 pm

A buddy of mine always comes to me to weld up whatever he can break. This new one is off of his boat and is stainless steel. I currently have a MIG welder and I've toyed around with aluminum but really needed the spool gun. What all does one need to know about welding stainless? From what I've figured, I can use a MIG with stainless wire and its recommended to use Tri-Mix gas.

I am sure TIG is the way to go, but I'm still saving up for that!!!
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Re: Welding Stainless

Postby BigSwede » Wed Jul 09, 2014 4:04 pm

Probably not the answer you were looking for, but exposure to hexavalent chrome can be a problem when welding stainless.
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Re: Welding Stainless

Postby btw1549 » Wed Jul 09, 2014 4:18 pm

You can weld stainless with a mig set-up as you mentioned with tri-mix gas. You don't need to know anymore than welding regular steel with the correct wire and gas. Yes tig in many applications is better, such as header pipes, however for most projects migging the stainless will yield excellent results.
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Re: Welding Stainless

Postby geoffinbc » Wed Aug 27, 2014 12:44 pm

If you don't want to buy or rent gas for one job you can use flux core with a 75/25 standard gas. Flux core is very nice to use on SS
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Re: Welding Stainless

Postby Chitzu » Wed Aug 27, 2014 7:41 pm

BigSwede wrote:Probably not the answer you were looking for, but exposure to hexavalent chrome can be a problem when welding stainless.

This got bumped up, Is the hexavalent from boat stainless? I did a lot of tig 302 years back,maybe that's what is wrong with me. :alien:
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Re: Welding Stainless

Postby Med!c » Mon May 04, 2015 3:15 am

Chitzu wrote:
BigSwede wrote:Probably not the answer you were looking for, but exposure to hexavalent chrome can be a problem when welding stainless.

This got bumped up, Is the hexavalent from boat stainless? I did a lot of tig 302 years back,maybe that's what is wrong with me. :alien:


any steel that has chromium in it poses a risk. I've read even recycled mild steel can have chrome in it.
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Re: Welding Stainless

Postby HoldFastTx » Tue May 19, 2015 6:40 am

Breathing burnt flux doesn't help either. Nor does burning any metal covered in things like motor oil and brake fluid. I'm a long time welder , started in structural now pipe. There's a link to Parkinsons. My father owns a steel business and when I worked for him I saw a lot of old welders with shaking hands. I personally have had galvanize poisoning, milk helps. Respirators are the way to go but in Texas its so hard to wear it and breath. My eyes are messed up and I'm scared to even see what my lungs are like, 20 year smoker too, I know, I know. Saftey first
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