Properties and application of alloy steel castings

- Mar 21, 2018-

The total amount of alloying elements in alloy steel castings should not be higher than 5%, that is, low alloy steel. In general, the mechanical properties, especially toughness and hardness, of low alloy steel castings can be adjusted in a wide range. According to different application conditions, the strength, impact toughness and wear resistance of alloy steel castings can be considered and matched.


As long as alloy steel castings do not directly cause fracture due to brittleness, the wear resistance of alloy steel castings increases with the increase of hardness. Its strength and hardness are higher than wear-resistant manganese steel, but it can be replaced by manganese steel in non-large impact wear condition, its plastic and toughness is higher than wear-resistant cast iron, and its service life is longer than wear-resistant cast iron under certain impact load.


The main purpose of adding alloying elements effectively into alloy steel castings during operation is to improve hardenability, strength, toughness and wear resistance. Welding properties are similar to other low-alloy steels, low-alloy wear-resistant steels can be classified by heat treatment and carbon content.


The application of alloy steel castings to abrasive wear and mining conditions with a certain impact load, which refers to steels that are purposely added with other elements in order to meet specific performance requirements. Elements added to the ductile hardenability and various comprehensive performance indicators are called alloying elements. Quenched elements include chromium, nickel, molybdenum, copper, silicon, manganese, vanadium, titanium, rare earths, tungsten, boron and even some harmful elements to meet specific environmental requirements, Also known as alloy elements.