The difference between cast ironcast steel butterfly butterfly

Cast iron butterfly valve

Less carbon cast steel, good toughness, so the use of steel wider than pig iron, steel not only have good ductility and steel products with high strength, elongation and other mechanical properties generally superior to cast iron, ductile cast iron, is the 1950s developed a high-strength cast iron materials, its overall performance is close to steel, is based on its excellent performance, has been successfully used to cast a number of complex forces, strength, toughness, wear resistance the higher parts. Ductile iron has been behind the rapid development of gray cast iron, cast iron material is widely used. The so-called "iron and steel", mainly referring to ductile iron