8620 is a commonly used alloy carburized steel. After carburizing treatment, the surface has very high hardness, wear resistance and contact fatigue strength. At the same time, the core retains good toughness and can withstand high impact loads. It is mainly used as a material for impact-resistant and wear-resistant parts such as automobile bearings.

8620H is often used to manufacture gears in the engines and transmission systems of small and medium-sized cars and tractors; it can also replace 12CrNi3 steel to manufacture carburized parts and cyanide parts that require higher core performance, such as cones for oil drilling and metallurgical open-pit mines. The claws and gear body of the drill bit. Because 8620 contains molybdenum, it not only has good comprehensive properties but also can withstand a certain temperature. Therefore, it can be used to manufacture steam turbine gear rotors and internal combustion engine connecting rod valve section forgings.