Different cast steel characteristics

Update:31 May 2019

Cast steel is a steel used for casting and is a kind of […]

Cast steel is a steel used for casting and is a kind of cast alloy. Cast steel is a method of industrial production of parts and is also a widely used method. Cast steel can be divided into different cast steel categories according to different carbon content. Carbon cast steel is divided into carbon content according to carbon content: C≤0.20% for low carbon cast steel; C0.2~0.5% for medium carbon steel; C≥ 0.5% is high carbon steel. Cast steel can be divided into chemical composition: carbon cast steel and alloy cast steel. Alloy steel is divided into alloying elements: low alloy steel and high alloy steel.

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

2. Casting special steel: alloy cast steel refining to meet special needs, a wide variety, usually contains one or more high-alloy elements to achieve a special performance. For example, high manganese steel containing 11% to 14% manganese can withstand impact and wear, and is mostly used for wear parts of mining machinery and engineering machinery; various stainless steels with chromium or chromium nickel as main alloying elements, used in corrosion or 650 Parts that work at temperatures above °C, such as chemical valve bodies, pumps, vessels, or turbine casings for large-capacity power plants.

3. Cast carbon steel: cast steel with carbon as the main alloying element and containing a small amount of other elements. Less than 0.2% carbon is cast low carbon steel, carbon content 0.2% to 0.5% is cast medium carbon steel, and carbon content greater than 0.5% is cast high carbon steel. As the carbon content increases, the strength of the cast carbon steel increases and the hardness increases. Cast carbon steel has high strength, plasticity and toughness, low cost, and is used in heavy machinery to manufacture parts with heavy loads, such as rolling mill stands, hydraulic press bases, etc.; Parts that are subject to impact, such as bolors, side frames, wheels and couplers.