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Old 01-28-2005, 04:51 AM   #1 (permalink)
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Mig Gas Mixture

Does anyone use the mixes that are suggested on WeldReality.com? I am going to get 85%AR-15%CO2 mix. I had a hard time finding a supplier that could get it for me though. It seems that 75-25 is the standard and is all anyone even bothers to carry. I was wondering if anyone has tried both and if there is really an advantage to going with the harder to find 85-15 mix. What do you all use for a mix on Stainless? The Weldreality guy suggests 98%Ar-2%CO2, again not something that my local suppliers seem to stock. You can get 98%AR-2%O2 however.
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Old 01-28-2005, 03:41 PM   #2 (permalink)
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I use 75/25 on the MIG and straight AR off my TIG for stainless if I need to.
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Old 01-28-2005, 09:18 PM   #3 (permalink)
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I use 75/25 on the MIG and straight AR off my TIG for stainless if I need to.

Same here. I never even knew there was 85/15 available.....
I use the straight argon for tigging aluminum too.
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Old 01-30-2005, 11:18 AM   #4 (permalink)
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I mig with 75% AR 25% CO2 I didn't know you could get 85/15 or 98/2. I hear alot of people mig with 100% CO2 and that is spaters a little more. Anyone mig with 100% AR?
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Old 01-30-2005, 02:00 PM   #5 (permalink)
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I usually use Unamix 21 or 7. I'll have to check the exact mixture later. Don't know right off hand. Of course, I use straight Argon for the TIG.


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Old 01-30-2005, 02:20 PM   #6 (permalink)
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Originally Posted by Tfab
I mig with 75% AR 25% CO2 I didn't know you could get 85/15 or 98/2. I hear alot of people mig with 100% CO2 and that is spaters a little more. Anyone mig with 100% AR?


I've tried mig welding with 100% argon, and it didnt work. It was on steel though. Maybe there is a use for 100% argon migging???? Maybe spool gunning aluminum?
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Old 01-30-2005, 02:31 PM   #7 (permalink)
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Ive used the 85-15 mixture, and for the trouble I had finding it, Its much easier, and the results dont vary enough from a regular old 75-25 to make me want to go back and search for it again.
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