Can 16Mn grade III forgings be quenched and tempered?

2021-08-14View Original

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According to HG/T 20615-2009, the flanges and flange covers with DN450-600 dimensions are made of 16MnⅢ material, and it is specified that quenching and tempering should be applied. Is it permissible to use quenching and tempering for 16MnⅢ, which is a low-carbon alloy?

Reply #22021-08-14

16Mn is a low-alloy steel, not a low-carbon steel

Reply #32021-08-14

I believe the specification you mentioned is from 2009. The 16Mn series has since been renamed to the Q345 series. Let’s see what the new specification says

Reply #42021-08-15

Could you please let me know the source? Why not?

Reply #52021-08-15

Did you mean to change 16MnR to Q345R? Or was it the pipe fittings of type 6479, where 16Mn was changed to Q345? Mine is a forged piece

Reply #62021-08-15

The answer has been found. Thank you everyone!

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Can 16Mn grade III forgings be quenched and tempered?

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