Ferromaxx® Plus (M20ArHeC20/12) weld process gas meeting the requirements of ISO14175:M20, contains 20% Helium and 12% Carbon Dioxide in Argon. Our best gas for welding carbon steel. It is suitable for carbon-manganese, low alloy and coated steels of all thicknesses with a solid wire in dip, spray and pulse transfer. It offers up to 19% increase in weld speeds compared to conventional mixtures and reduced spatter.