This standard is applicable to gas shielded arc welding and cutting processes with gases and gas mixtures defined within. Applications include, but are not limited to:
- tungsten inert gas (TIG) welding;
- metal active gas (MAG) welding;
- metal inert gas (MIG) welding;
- plasma arc welding (PAW);
- plasma arc cutting (PAC);
- back shielding.
The purpose of this standard is to classify shielding gases in accordance to their chemical properties as a base for the approval of shielding gas and filler wire combinations.
Gas purities and mixing tolerances are also specified.
BS EN 439:1994 history
2008BS EN ISO 14175:2008 Welding consumables - Gases and gas mixtures for fusion welding and allied processes
1994BS EN 439:1994 Welding consumables - Shielding gases for arc welding and cutting