DUCTILE IRON is a high carbon ferrous material having high strength, high ductility, toughness, good castability and ready machinability. It is a family of materials and is produced in six different commercial types providing various combinations of strength, ductility and toughness. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and creep. It also includes information on heat treating, machining, and joining. Filing Code: CI-16. Producer or source: International Nickel Company Inc..