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What is the national standard of material 20mnmo?
20MnMo belongs to forged steel parts for low alloy pressure vessels, and the implementation standard is GB/T17107-1997.

20MnMo alloy steel is a forged steel part for low-alloy pressure vessels, which is used to manufacture pressure vessel parts and important forgings at -40℃~470℃.

The chemical composition of 20MnMo is as follows: