M21ArC18 weld process mixture is classified in group M21 according to ISO14175 and contains 18% Carbon Dioxide in Argon. Generally suitable for MAG welding of carbon steel or when using basic tubular thread and rutile (with slag formation) wire on stainless steel. Supplied in the new revolutionary digital 30 litre Integra® e² cylinder at 300 bar. The Integra® e² cylinder, not only provides essential gas information on the cylinder and via our App, the advanced technology also saves gas in 4 different ways. Our Integra® cylinder range is safer, smaller and lighter. The Integra® cylinder is designed to be used with a choice of Integra® flow optimisers (available separately) which ensure optimum weld results whilst reducing excessive gas usage too.