OK 67.56

Acid rutile coated MMA-electrode for welding lean ferritic-austenitic (duplex) stainless steels. This electrode provides excellent mechanical properties combined with a medium corrosion resistance. It is used for welding the majority of lean duplex types such as S32001 (1.4482), S82011, S32101 (1.4162), S32202 (1.4062), S32304 (1.4362). It can also be used to weld grade S32003 if slightly undermatching corrosion resistance is accepted. It is less suitable for 1.4655 type material where Cu alloying is required. Typical applications are desalination plants, pipes, storage tanks, floodgates, footbridges and containers.