question on welding gas
 

im abit confused on what type of gas i should buy, because they tell me there is straight argon and theres the mix. I mean what kind of gas do i need to weld both aluminum and stainless steel. I know this sounds like a noob question, but i would really appreciate the help.

Re: question on welding gas
 

for tig? straight argon.

Re: question on welding gas
 

oh im sorry yea for tig. How about mig?

Re: question on welding gas
 

GMAW has loooooooots of different gases. C25 is the most common for mild steel. Pure argon for AL. Trimix for stainless steel........theres a pretty long list of em.

Re: question on welding gas
 

I have a (newb) question on gas...I have a dual mig and want to try gas instead of flux core, just wondering how much it costs for a bottle and if there exists disposable bottles since i wont be using all that much

Re: question on welding gas
 

if you want to do both AL and SS then plain argon is fine...

Re: question on welding gas
 

For aluminum GMAW you need argon. For SS, Argon won't work so well.

Re: question on welding gas
 

We use full Argon on the miller synchrowave 180sd for Aluminum and Stainless and We use an Argon / Co2 mix for the Mig. The Co2 allows it to burn a bit hotter and gets better penetration because of this.

Re: question on welding gas
 

I use argon for aluminium and stainless steel, no broblem at all... Some pictures on my site: www.lakesteel.org

Re: question on welding gas
 

Yep, argon for both ss and alum here!