High strength 20CrMnMo steel chemical composition

Posted:2021-12-23 15:30:00

20CrMnMo steel is high-strength advanced carburizing steel. Its strength is higher than 15CrMnMo, plasticity and toughness are slightly lower, hardenability and mechanical properties are higher than 20CrMnTi. After quenching and tempering, 20CrMnMo steel has good comprehensive mechanical properties and low temperature impact toughness.

Chemical composition and melting analysis of 20CrMnMo steel sheet:

Grade	C	Si	Mn	P	S	Cr	Mo	Cu
20CrMnMo	0.17-0.23	0.17-0.37	0.9-1.2	≤0.03	≤0.03	1.1-1.4	0.2-0.3	≤0.25

20CrMnMo steel has high bending strength and wear resistance after carburizing and quenching, but it is prone to cracks during grinding. 20CrMnMo steel weldability is not good, and it is suitable for resistance welding. Preheating is required before welding, and tempering treatment after welding.

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