Chilled cast iron with high corrosion and wear resistance

摘要

A chilled casting is characterised by high corrosion resistance in aggressive media and by a wear resistance that approaches that of commercially available types of chilled casting. The disclosed chilled casting contains 36 to 46 % by weight Cr, 5 to 12 % by weight Ni, 2 to 6 % by weight Mo, up to 3 % by weight Cu, up to 0.2 % by weight N, up to 1.5 % by weight Si, up to 1.5 % by weight Mn and 1.4 to 1.9 % by weight C, the remainder being Fe and impurities due to the production process. The chilled casting further contains 20 to 40 % by volume austenite, 20 to 40 % by volume ferrite and 20 to 40 % by volume carbides having a lattice structure.