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Characteristics and typical fields of application TIG rod of W 21 10 N type designed for welding the high temperature steel 253 MA®, used for example in furnaces, combustion chambers, burners, etc. Both the steel and the consumable provide excellent properties at temperatures 850 – 1100ºC. The composition of the consumable is balanced to ensure crack resistant weld metal. Scaling resistance up to 1150ºC (Air). Excellence resistance to high temperature corrosion. Not intended for applications exposed to wet corrosion. The base material 253 MA has a tendency to give a thick oxide layer during welding and hot rolling. Black plates and previous weld beats should be carefully brushed or ground prior to welding. Micro structure: Austenite with 2 to 8 % ferrite.
