M21ArC20 weld process gas meeting the requirements of ISO14175. Our M21 mixture contains 20% Carbon dioxide in Argon. Ideal for MAG welding of carbon, carbon manganese and low-alloy steels. Supplied in a 47 litre steel cylinder at 200 bar. It can also be used to weld stainless steels materials but only with flux-cored filler wire due to its excellent penetration. Recommended for Spray transfer modes. - M21ArC20 - Welding Mixture - 47 Litre Steel Cylinder (200 bar) - Air Products