Stainless steel question

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can i use a regular MIG welder to weld Stainless Steel Piping??
Reply:why not?straight argon ...zap!I am not completely insane..Some parts are missing Professional Driver on a closed course....Do not attempt.Just because I'm a  dumbass don't mean that you can be too.So DON'T try any of this **** l do at home.
Reply:best gas for welding stainless is tri mix gas 98% helium 3.5% CO2 1.5% O2 not exactly sure on the %'s but if you realy need to know email me i'll get them exact for you. also 98%argon 2% Oxygen is great for spray transfer if but you lose some corrosion resistance at high temps Fire doesn't burn a good Christian !
Reply:DJM, what sort of s/s pipe welding will you be doing?Truck rack? Bumpers? Water, Fuel, Oil, Steam, Pressure Lines?
Reply:Originally Posted by mjedudeDJM, what sort of s/s pipe welding will you be doing?Truck rack? Bumpers? Water, Fuel, Oil, Steam, Pressure Lines?
Reply:Originally Posted by DJM AutoWorksim going to be welding a custom exhaust system but everyone tells me a mig with argon can not weld stainless steel piping its only .065 which i think is 16 gauge. and is it worth using stainless steel or should i just go with mild steel piping instead...also do you know any good places online that i can order steel and piping and basically welding material offline???
Reply:DJM, I personally would use a .023 or .025" dia solid s/s mig wire, with a tri mix.If you have carbon steel mig wire gas (AR/CO2), it should also get you by.Good Luck!
Reply:Try stainlessworks.net . They used to have grab bags dirt cheap. not sure if they still do, but they have great prices anyway.
Reply:For that thickness, stay with short-circuit GMAW.  If you decide to do it in stainless, you'll want the appropriate stainless wire (.023 or .030) and Tri-mix gas, which is typically 90% He, 7.5% Ar, 2.5% CO2Your steel mix gas will work, but you'll lose some of the anti-corrosion properties of what the weld could be.
Reply:Use back-up flux or an argon back purge or you will get no penetration.  Just buy 309L or 310/310Cb filler wire since it will do most stainless between 304 and 316 and maybe even 321.
Reply:I second 76GMC1500's comments - be sure to back purge the tubing with argon. This is a trick straight from the folks that build headers for Hendrick's Motor sports.
Reply:Purging or back-up flux has nothing to do penetration.What you will have is weld contamination on the inside of your tube.Last edited by alan waters; 05-13-2006 at 09:49 AM.
Reply:Originally Posted by alan watersPurging or back-up flux has nothing to do penetration.What you will have is weld contamination on the inside of your tube.