Solid wire of G 21 10 N type type designed for welding the high temperature steel 253 MA® (1.4835 / UNS S30815), used for example in furnaces, combustion chambers, burners, etc. Both the steel and the consumable provide excellent properties at 850 – 1100°C. The composition of the consumable is balanced to ensure crack resistant weld metal. The resulting microstructure is austenite with 2 – 8% ferrite. Scaling resistance up to 1150°C (Air). Excellence resistance to high temperature corrosion. Not intended for applications exposed to wet corrosion. 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.