Carbon steel casting

Cast steel in carbon steel foundries is the steel used for castings and is a type of forging alloy. Cast steel is a method of industrial production of parts and components, and it is also a widely used method. Cast steel can be divided into different types of cast steel according to the difference in carbon content. Carbon cast steel is divided into different types according to carbon content: 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 steel is divided into low alloy steel and high alloy steel according to the content of alloy elements. The following analysis is the characteristics of forged low-alloy steel, forged special steel and forged carbon steel with 3 different cast steels.
1. Forged low-alloy steel: cast steel rich in manganese, chromium, copper and other alloy elements. The total amount of alloying elements is generally less than 5%, which has greater impact resistance and can obtain very good mechanical functions through heat treatment. Forged low-alloy steel has better application functions than carbon steel, which can reduce the quality of parts and improve the service life.
2. Forged special steel: alloy cast steel made for the special needs of accustomed to a wide range of varieties, generally rich in one or more high amount of alloying elements to obtain a certain special function. For example, high manganese steel containing 11% to 14% manganese is capable of impact wear and is mostly used for wear-resistant parts of mining machinery and construction machinery; various stainless steels with chromium or chromium-nickel as the primary alloying element are used for corrosion or 650 Parts that operate under high temperature conditions above ℃, such as chemical valve bodies, pumps, containers, or steam turbine shells of large-capacity power stations.
3. Carbon steel casting: cast steel with carbon as the primary alloying element and rich in a few other elements. Forged low-carbon steels with a carbon content of less than 0.2%, forged medium-carbon steels with a carbon content of 0.2% to 0.5%, and forged high-carbon steels with a carbon content of more than 0.5%. As the carbon content increases, the strength of forged carbon steel increases and the hardness improves. Forged carbon steel has high strength, plasticity and durability, and low cost. It is used in heavy machinery to make parts that accept heavy loads, such as rolling mill stands, hydraulic press bases, etc.; it is used to make heavy forces on railway vehicles. Parts that are subject to impact, such as bolsters, side frames, wheels and couplers, etc.

The amount of carbon content and alloy content determines the classification of cast steel and the characteristics of cast steel. Different cast steels are used on different scales, so they are of great help for the accurate purchase of steel castings. Buyers should carefully understand the characteristics and select steel castings reasonably.