MIG welding with stanless or Aluminum,COVER(shield) GAS - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**crossy** · 10-28-2020, 08:31 AM

I am well versed at nearly all types of materials that can be welded. HAD Nuclear and ASME quals in my heyday. That said, I had only used my home MIG machine for LIGHT fabrication and rust repair on carbon steel(LOTS of it,lol). I just bought a small spool of 304L stainless and want to TRY it on stainless exhaust. The Lincoln website(my new Machine is good,230v Hobart) recommends a tri gas mix with 90% Helium, their plan ‘B’ is a dual mix with 98% Argon. I have pure Argon already here for my portable, Chinese TIG machine. Has anyone tried 100% Argon on their MIG with stainless???, I understand that the Helium helps flatten the puddle, but I am not real concerned with a raised bead on the exhaust, only that it actually weklds the two pieces together, and doesn’t rust. how about Aluminum in the MIG like a 4043? Thanx- Crossy

**richard2717** · 10-28-2020, 09:55 AM

I Use 100% argon with no issues on occasion

**PGSigns** · 10-29-2020, 08:06 PM

I used to do a lot of stainless welding up oyster shucking tables. The tri mix does a lot better job. See if your local welding supply has a smaller bottle.
Jimmy

10-28-2020, 08:31 AM	#1
crossy Oh,you can't buy that new Join Date: Apr 2000 Location: Pennsville,N.J. 08070, USA Posts: 2,039	MIG welding with stanless or Aluminum,COVER(shield) GAS I am well versed at nearly all types of materials that can be welded. HAD Nuclear and ASME quals in my heyday. That said, I had only used my home MIG machine for LIGHT fabrication and rust repair on carbon steel(LOTS of it,lol). I just bought a small spool of 304L stainless and want to TRY it on stainless exhaust. The Lincoln website(my new Machine is good,230v Hobart) recommends a tri gas mix with 90% Helium, their plan ‘B’ is a dual mix with 98% Argon. I have pure Argon already here for my portable, Chinese TIG machine. Has anyone tried 100% Argon on their MIG with stainless???, I understand that the Helium helps flatten the puddle, but I am not real concerned with a raised bead on the exhaust, only that it actually weklds the two pieces together, and doesn’t rust. how about Aluminum in the MIG like a 4043? Thanx- Crossy __________________ "been there, done that, ruined the T-shirt". 2007 LBZ GMC Sierra, ECSB 2006 LM7 RCSB Silverado 98 Vortec project. 94,3500,6.5L 4L80 81 SWB GMC POS finally gone 73 Pinto, stock, w/CragarSS's-eww LOTS of Cummins trucks.

10-28-2020, 09:55 AM	#2
richard2717 Equal opportunity joke ofender Join Date: Oct 2011 Location: Eastern Shore of MD Posts: 10,126	Re: MIG welding with stanless or Aluminum,COVER(shield) GAS I Use 100% argon with no issues on occasion __________________ Members I have met. Dually Jams, OlBlue60, ScottH, Tommyboy24, Dujobo, Warbucket, 2003 Silverado, Notsolo, my90k5, 6t727t2, Special-K ,Jack_71C10, tabarcus,72blazer_mud_bogger,pwdcougar,RSavage,EricSean,1Rippen6,invicta455,tennaragtop71,arks, Kendal,Bennett68C10, Perpendicular, Chainsawman, McGeesCustomMinis,ShortbedClayton,longblue72,6768chevylover,Tim71,Travisarmenta,Ol' Drippy,fleetmitch,georgieb51,Dave,bcnya2,Dadsburb https://paypal.me/6772GMtruckparts Most women like the strong, silent type… Fortunately for me, my wife prefers the out-of-shape, mouthy type.

10-29-2020, 08:06 PM	#3
PGSigns Senior Member Join Date: Jan 2011 Location: Hayes Va Posts: 4,569	Re: MIG welding with stanless or Aluminum,COVER(shield) GAS I used to do a lot of stainless welding up oyster shucking tables. The tri mix does a lot better job. See if your local welding supply has a smaller bottle. Jimmy __________________ 60 to 66 Chevy and GMC window decals http://67-72chevytrucks.com/vboard/s...d.php?t=661131 Good friends, good food and a hotrod what else do you need? 1966 BBW long fleet Daily driver 1965 BBW short fleet Sold and going to a good home 1965 Suburban 2003 3500 Duramax 2005 Ultra Classic



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