Cast steel The steel used for pouring castings. It is a kind of casting alloy. Cast steel is divided into cast carbon steel, cast low alloy steel and cast special steel.
Cast carbon steel: Cast steel with carbon-based alloying elements and a small amount of other elements. Cast low-carbon steels with carbon content less than 0.2%, cast medium-carbon steels with carbon content of 0.2% to 0.5%, and cast high-carbon steels with carbon content greater than 0.5%. As the carbon content increases, the strength and hardness of cast carbon steel increase. Cast carbon steel has high strength, plasticity and toughness, and low cost. It is used in heavy machinery to manufacture parts that bear heavy loads, such as steel rolling mill stands, hydraulic press bases, etc.; it is used to manufacture heavy stress on railway vehicles Parts that are subject to impact are bolsters, side frames, wheels, and couplers.
Cast low alloy steel: Contains manganese Cast steel with alloying elements such as, chromium and copper. The total amount of alloying elements is generally less than 5%, with greater impact toughness, and better mechanical properties can be obtained through heat treatment. Casting low-alloy steel has better performance than carbon steel, which can reduce the quality of parts and increase the service life.
Casting special steel: alloy cast steel made to meet special needs. There are many varieties, usually containing one or more high amount of alloying elements to obtain certain special properties. E.g , High manganese steel containing 11% to 14% manganese can resist impact and wear, and is mostly used for wear-resistant parts of mining machinery and engineering machinery; various stainless steels with chromium or chromium-nickel as the main alloy elements are used in corrosion or 650℃ Parts that work under the above high temperature conditions, such as chemical valve bodies, water pumps, containers, or steam turbine shells of large-capacity power stations.
