Nodular cast iron is a kind of high strength cast iron material developed in the fifty’s in twentieth Century. Its comprehensive performance is close to that of steel. Based on its excellent performance, it has been successfully used to cast some parts with high strength, strength, toughness and wear resistance. Nodular cast iron has been rapidly developed as the second most wide application just after gray iron. The so-called "iron steel"is mainly referred to ductile iron.
Nodular graphite cast iron is obtained by the ball and inoculation process. It can improve the mechanical properties of the cast iron, especially improve the ductility and toughness.
