shielding gas advice

[Tommyf]

Hello all,
My 20 ltr bottle of 5% argon mix is nearly empty & before I exchange it i was hoping for your thoughts. I am mainly welding steel from 3 mm to 6 mm and sometimes up to 10 mm thickness, do you think I would be better of changing to a bottle of 15% argon mix or stay with the 5% mix ? . (The bottles are from south west gas supplies bye the way).
Many thanks, Tom

 

[backpurge]

You would be better off using a higher CO2 content than 5% for that thickness

 

[Agautosport]

Hello all,
My 20 ltr bottle of 5% argon mix is nearly empty & before I exchange it i was hoping for your thoughts. I am mainly welding steel from 3 mm to 6 mm and sometimes up to 10 mm thickness, do you think I would be better of changing to a bottle of 15% argon mix or stay with the 5% mix ? . (The bottles are from south west gas supplies bye the way).
Many thanks, Tom

Your local distributor will be able to get 15% from us no problem.

Alan
Southwest Gas Supplies Ltd
www.sgsgases.co.uk