Cast iron composition for high stress applications comprises (in wt.%) 2.5-3.5 carbon, 2.5-4.5 silicon, maximum 2.5 nickel, 0.10-0.45 niobium, maximum 0.4 manganese, 0.01-0.10 magnesium, maximum 0.004 cerium, 0.001-0.004 antimony

摘要

Cast iron composition comprises (in wt.%) 2.5-3.5 carbon, 2.5-4.5 silicon, maximum 2.5 nickel, 0.10-0.45 niobium, maximum 0.4 manganese, 0.01-0.10 magnesium, maximum 0.004 cerium, 0.001-0.004 antimony and a balance of iron and impurities. The composition has a ferritic structure and a carbon equivalent CE of 4.1-4.5 % where CE = C + 1/3 Si.