5120 steel is a low carbon alloy structural steel containing 0.7-0.9% chromium as per American standard ASTM A29.
Due to its good toughness, forgeability and weldability, 5120 steel can meet the manufacturing needs of various shapes and sizes. This alloy steel responds well to heat treatment processes, and its hardness and strength can be adjusted through heat treatment.
After carburization, 5120 alloy steel has high hardness and wear resistance. It not only withstands high loads and impact loads, but also resists friction and wear, extending the service life of the material. Therefore, it is widely used in the manufacturing of automotive parts, such as transmissions,gears, crankshafts, piston pins, etc.