stainless steel sheet metal

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if I wanted to do some stainless steel sheet metal fabrication would my MIG welder be alright to weld this up? Or do I need a TIG?Please let me know.
Reply:Yes, you can use your MIG but you need SS wire if you plan to keep it from corroding. It is also recommended you use a He/Ar/CO2 mix.John -  fabricator extraordinaire, car nut!-  bleeding Miller blue! http://www.weldfabzone.com
Reply:Hi,It depends on how thick the material is and when you say mig weld it, what sort of mig welder have you got?
Reply:Originally Posted by Matt1978Hi,It depends on how thick the material is and when you say mig weld it, what sort of mig welder have you got?
Reply:Originally Posted by MicroZoneYes, you can use your MIG but you need SS wire if you plan to keep it from corroding. It is also recommended you use a He/Ar/CO2 mix.
Reply:You do not say how big these weldments are.If there is many feet of welding then GMAW will be better than GTAW.The small 110V wire feed will not work very well. Even with tri mix (expensive) gas.You will need a little bigger-better wire feed welder.I have tried to use the small wire feed with stainless and the results were not acceptable.Wish you could tell us more about what you will be making. Counter tops?If so TIG would be better because GMAW has a lot of heat input and warping will be a BIG issue,TIG has the lowest heat input and will help to control warping.
Reply:I don't know what the HE does, but it makes a much nicer looking weld and also easier to run. Ask your LWS about a tri-mix for stainless MIG. They may tell you that you don't need it because it is pricy. Don't use C-25, it will make your weld black looking. Use Argon if you don't get the tri-mix.Last edited by mooseye; 01-29-2008 at 07:20 PM.SA200,Ranger8,Trailblazer251NT,MM250,Dayton225AC,T  D-XL75,SpoolMate3545SGA100C,HF-15-1  RFCS-14 When I stick it, it stays stuck!
Reply:What is this being used for?  That's the first place to start.  Like Donald said, expecting warping to be a major issue.
Reply:98% 2% for the big guns but on my miller 180 75% 25% all day long no worries. With 16g stainless think about going down to .30 wire
Reply:"expecting warping to be a major issue."
Reply:Your DVI2 running on 220v should have plenty of power to weld that thin stainless.  I agree on the .030 wire.MM350P/Python/Q300MM175/Q300DialarcHFHTP MIG200PowCon300SMHypertherm380ThermalArc185Purox oaF350CrewCab4x4LoadNGo utilitybedBobcat250XMT304/Optima/SpoolmaticSuitcase12RC/Q300Suitcase8RC/Q400Passport/Q300Smith op
Reply:Hi, with Pulse mig you should be able to lessen the distortion levels.It is possible to weld thin sheet with a 1.0mm wire (0.0394") down to about 25 amps or the eqvuilent of about 0.9mm sheet.Admitidally this is on much thicker material approx (0.197"), but here is an example, this was welded with Lorch Pulse mig, using SpeedPulse and TwinPulse, 1.0mm 316lsi wire and 98% Ar/2% Co2 Sheilding gas. Attached Images