Thoughts on argon for steel?

[JoshF]

So I just ordered a plasma cutter,mig welder and spool gun from longevity.
So Im now really broke. I was thinking about just getting an argon tank. I know people suggest a mix for steel and argon for aluminum but I dont want to buy two tanks.
Any reason I couldnt use straight argon on steel? All ofd my past experience is using straight co2.

[Gadget]

That's all I use for steel, stainless, and aluminum.
Dan

[KHK]

I also use argon Al, Steel, stainless

[henrym]

Argon is best for everything... FOR TIG. it seems the question is regarding MIG welding gas. apparently co2/Ar mix is used because when GMA-Welding steel, a reaction of iron and co2 is used to increase heat and therefore penetration. Ar is added for cleanliness/stability.

strait Ar makes lumpy MIG welds with little penetration in steel I hear.

Henry

[KHK]

henrym is correct I missed the MIG part of the origional question. I do not have a MIG welder and was talking about TIG, sory

[Gadget]

And I just plain didn't know there was a difference, sorry too.
Glad Henrym set it straight. Thanks Henrym.

Dan

[torqueman]

When I got the tank for my MIG the guy at the store said the c02/argon mix was best.

[bhardy501]

Yep, I have always heard 75/25 for MIG (steel) and straight Argon for TIG and MIG aluminum. You could probably go to Airgas web site and find more info.

[robert]

With c-25 youll get a cleaner looking weld staight c02 youll get a little more penitration but more spatter c02 is also cheaper.

[junes]

You got it a mix is best and c25 is the gas to get with short circuit mig and globular transfer. For spray transfer it's not the case.