ductile cast irons
ductile cast irons
Ferrous alloys in which graphite is present as tiny balls or spherulites. The spheroidal graphite structure is produced by adding one or more elements to the molten metal, among which magnesium and cerium are commercially important. Approximate composition of ductile cast irons is: 3.0 to 4.0 percent carbon, 0.1 to 1.0 percent manganese, 1.8 to 2.8 percent silicon, 0.1 percent (maximum) phosphorus and 0.03 percent (maximum) sulfur. Typical ductile cast iron grades are D-4018, D-4512, D-5506 and D-7003 by definition of the Society of Automotive Engineers; 60-40-18, 65-45-12, 80-55-06, 100-70-03 and 120-90-02 by definition of the American Society for Testing and Materials. Also known as nodular cast irons.
Ferrous alloys in which graphite is present as tiny balls or spherulites. The spheroidal graphite structure is produced by adding one or more elements to the molten metal, among which magnesium and cerium are commercially important. Approximate composition of ductile cast irons is: 3.0 to 4.0 percent carbon, 0.1 to 1.0 percent manganese, 1.8 to 2.8 percent silicon, 0.1 percent (maximum) phosphorus and 0.03 percent (maximum) sulfur. Typical ductile cast iron grades are D-4018, D-4512, D-5506 and D-7003 by definition of the Society of Automotive Engineers; 60-40-18, 65-45-12, 80-55-06, 100-70-03 and 120-90-02 by definition of the American Society for Testing and Materials. Also known as nodular cast irons.