This standard is included in DIN DVS Handbook 8, 191 and 361. Defines requirements for the classification of gases and gas mixtures used in fusion welding and allied processes including, but not limited to: - tungsten arc welding (Process 141); - gas-shielded metal arc welding (Process 13); - plasma arc welding (Process 15); - plasma arc cutting (Process 83); - laser welding (Process 52); - laser cutting (Process 84); - arc braze welding (Process 972).