Shielding Gases For Stainless Steel Welding. In most cases the gas used will be C2 or 2 Carbon Dioxide and 98 Argon. Welding of stainless steel is typically done with mixture of Argon and Carbon Dioxide gasses that can be as low as 2 carbon Dioxide to as high as 25 carbon Dioxide.
The shielding gases used for stainless steels differ from those used in GMA welding of unalloyed steels since they contain much less active gases such as oxygen and carbon dioxide. In some cases there is tri-mix shielding gas containing 90 Helium 75 Argon and 25Carbon dioxide. In manual plasma welding where the torch is hand-held the so-called micro-plasma and mini-plasma processes are employed for currents between 01 and 15 amperes and the non-emergent jet technique for currents between about 15 and 100 amperes.
Select shielding gases for welding of stainless steel is one of the most influential parts while welding with PAW GTAW FCAW GMAW and LBW.
In some cases there is tri-mix shielding gas containing 90 Helium 75 Argon and 25Carbon dioxide. Shielding gases are inert or semi-inert gases that protect the weld from these harmful gases in the atmosphere. Ad Find China Manufacturers Of Welding Wire. When you require extra-low carbon content in the weld use argon with 1 to 2 percent oxygen.