A DUCTILE IRON AND PROCESS OF FORMING A DUCTILE IRON COMPONENT

摘要

A ductile iron composition including, by weight: 3.4% to 4.0% Si; 3.0% to 3.5% C; 0.5% to 1.0% Cr; 0.02% to 0.05% Mo; up to 0.01% S; up to 0. 5 % Mn; and balance iron and incidental impurities. The composition has a a ferritic body center cubic microstructure and has a graphite nodule (201) density of greater than 100 per mm 2 . A method for forming a ductile iron composition is also disclosed.