This standard specifies requirements for classification of rods, wires and all-weld metal in the as-welded condition for tungsten inert gas welding of non alloy and fine grain steels with a minimum yield strength of up to 500 N/mm in the as-welded condition.
BS EN 1668:1997 history
2017BS EN ISO 636:2017 Welding consumables. Rods, wires and deposits for tungsten inert gas welding of non-alloy and fine-grain steels. Classification
2015BS EN ISO 636:2015 Welding consumables. Rods, wires and deposits for tungsten inert gas welding of non-alloy and fine-grain steels. Classification
2008BS EN ISO 636:2008 Welding consumables - Rods, wires and deposits for tungsten inert gas welding of non-alloy and fine-grain steels - Classification
1997BS EN 1668:1997 Welding consumables - Rods, wires and deposits for tungsten inert gas welding of non alloy and fine grain steels - Classification