Hello Friends
I use a shielding gas M11(95%Ar 3%CO2 2%H2) DIN EN ISO 14175 for welding of stainless steel(series 300).What could be the reason for the formation of pores.Welding FW seams of pulse, thickness is 3 and 6 mm .Is it possible gas supplier is not properly mixed gases, or purity of gas is not the norm.