Alloy Structural Steel

Grade：

18Cr2Ni4WA

Standards and Technical Conditions：

GB/T 3077-1999、 GJB 1951-94、 GJB 3784-1999

Product Characteristics

18Cr2Ni4WA has high strength, toughness and good hardenability, and is a high-grade steel with a relatively high nickel content. After carburizing and secondary quenching and low-temperature tempering, the surface has high hardness and wear resistance, and the core has high strength and toughness. But its process performance is poor; deformation resistance during forging is large. After normalizing, forged parts have high hardness and require long-time high-temperature tempering to soften. Machinability is poor. Generally, it is used after carburizing, quenching and tempering, and can also be used after quenching-and-tempering treatment.

Industrial Application

18Cr2Ni4WA is used to manufacture the large-section carburized parts requiring high strength, good toughness and low notch sensitivity, such as: large gears, transmission shafts, crankshafts, spline shafts, piston pins, and blade feeding control worms in precision machine tools; in addition, it can also be used for manufacturing high-strength quenched and tempered parts subjected to heavy loads and vibration, such as connecting rods, crankshafts and transmission shafts of heavy or medium machinery. After quenching-and-tempering followed by nitriding treatment, it can be used for crankshafts of high-power high-speed engines.

Company Product Applications

round barss produced by the Company are mainly applied to transmission shafts and connecting rods of heavy or medium machinery.

Common Delivery Condition

Chemical Composition

Mechanical Properties

Industrial Application