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20Cr2Ni4 steel is a high-strength alloy carburizing steel with good comprehensive mechanical properties. Its hardenability and strength and toughness exceed 12CrNi3 steel. The steel has good forging performance. The forging heating temperature is 1200 ° C, the initial forging temperature is 1150 ° C, the final forging temperature is greater than 850 ° C, and it is slowly cooled after forging. If 20Cr2Ni4 steel has coarse grains after forging, even after normalizing and subsequent carburizing heating, coarse martensite structure will still be obtained after quenching.

Standards: GB / T 3077-1988

In what applications is 20Cr2Mi4 used?

20Cr2Ni4 is used as carburizing and quenched and tempered structural parts with high strength requirements. Commonly used in the manufacture of small and medium-sized cars, tractor engines and gears in the transmission system . It can also replace 12CrNi3 steel to manufacture carburized parts and cyanide parts that require high core performance, such as teeth and claws for oil drilling and metallurgical surface mines Cone body.

Heat treatment specifications

Delivery status

Delivery in the heat treatment (normalizing, annealing or high temperature tempering) or non-heat treatment status. The delivery status should be specified in the contract.