Patent ID: 8956565
Filing Date: 2015-02-17
Classification: C22C

Abstract:
1. A flake graphite cast iron containing A-type graphite existing in a form in which an orientation of the A-type graphite is disordered and in which the A-type graphite is uniformly distributed, wherein the flake graphite cast iron has a composition excluding rare earth elements and misch metals, the composition comprising, in mass %, C, 2.8-3.7%; Si, 1.4-2.5%; Mn, 1.1-3.0%; P, 0.01-0.6%, S, 0.01-0.30%; and B, 0.06-0.20% and the remainder being Fe and inevitable impurities, and has a chemical composition in which a ratio of the Mn content with respect to the S content (Mn/S) is in a range of at least 47 to no more than 300; wherein the MnS content in the flake graphite cast iron is in a range of 200-1100 number/mm