Got a smallish tank with inert MIG gas. It still has gas in it. The label is gone, but for the part that says "non-flammable gas". I am pretty sure that it is MIG gas because the guy from whom I bought this tank, had only a MIG welder.
My first question is, I suspect that it is 75/25% mix, but how can I be sure of this.
My second question is, can I fill this tank with CO2 or do I need a special CO2 tank for CO2.
Thanks
Try MIG welding with it. If it is Argon, you will get a lot of Soot and no penetration.
If it is Helium you will get a very dark orange arc.
No. CO2 tanks store liquid CO2 and use a siphon tube.
No siphon tube on a welding tank, but the outlet will be differant.
CGA 580 inert gas
CGA 320 CO2
Thank You, Randy
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I thought that siphon tubes in CO2 cylinders are only used for Fire Extinguishers or other applications where you want to extract liquid CO2 from the tank?
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