Argon/co2 gas flow rate.

What is the recommended flow rate/pressure setting for 75% Argon/25% CO2 wth a Lincoln Weld Pak 100, and 025" steel wire when welding .045" thick steel?

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diameter of the nozzle usually determines gas flow rate.

20 cfh is plenty but you might get by with as little as 10 cfh..

as you turn it down,..if you get porosity, increase flow rate until porosity disappears.

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