so, i've been searching around for some info on shield gas for TIG on stainless. i found a few consistent recommendations, but which one and why? i do notice that most recommend little or no CO2.
i'm welding 16-20ga. 304 SS using 308L filler via TIG process.
98% Argon / 2% CO2 100% Argon 75% Argon / 25% CO2 96% Argon / 3% CO2 / 1% Hydrogen 98% Argon / 2% Oxygen 90% He / 7.5% Ar / 2.5% CO2