Cast steel is used for casting steel, is a casting alloy, cast steel is a way of industrial production of parts, is also widely used in a way. Cast steel can be divided into different castings according to the different carbon content. Carbon cast steel can be divided into: C 0.20% is low-carbon cast steel; C0.2 ~ 0.5% is medium carbon steel; C 0.5% is high carbon steel. Cast steel can be divided into carbon cast steel and alloy cast steel according to chemical composition. Alloy steels are divided into low alloy steels and high alloy steels according to the content of alloying elements. The following are the characteristics of three types of cast steel: cast low alloy steel, cast special steel and cast carbon steel.

Cast low alloy steel: cast steel containing alloy elements such as manganese, chromium and copper. The total amount of alloying elements is generally less than 5%, with greater impact toughness and better mechanical properties through heat treatment. Cast low alloy steel has better service performance than carbon steel, which can reduce the quality of parts and improve the service life.

2. Casting special steel: to adapt to the special needs of the alloy cast steel, a variety of varieties, usually contains one or more of the high amount of alloy elements, in order to obtain a special performance. For example, high manganese steel containing manganese 11% ~ 14% can withstand impact wear, mostly used in mining machinery, construction machinery wear parts; Is mainly made of chromium or nickel chromium alloy elements of all kinds of stainless steel, used in corrosion or high temperature above 650 ℃ under the condition of working parts, such as chemical in the body, pump, the container or the large capacity power plant steam turbine casing, etc.

3. Cast carbon steel: cast steel with carbon as the main alloying element and a small amount of other elements. Those containing less than 0.2% carbon are cast low carbon steel, those containing 0.2% ~ 0.5% carbon are cast medium carbon steel, and those containing more than 0.5% carbon are cast high carbon steel. With the increase of carbon content, the strength and hardness of cast carbon steel increase. Cast carbon steel has high strength, plasticity and toughness, low cost, used in heavy machinery to manufacture parts under heavy load, such as rolling mill frame, hydraulic base, etc. Used in railway vehicles to manufacture parts such as bolster, side frame, wheel and coupler which bear heavy load and impact.

The content of carbon and alloy determines the classification of cast steel and the characteristics of cast steel. The range of use of different cast steel is also different, so it is of great help for the correct selection of cast steel. Buyers should carefully understand the characteristics of a reasonable choice of cast steel.