10B22 hardenability
10B22 hardenability
(OP)
I have an application where one of our plants wants to switch a 1.5 inch diameter bar from 4140 to 10B22. The part needs to be heat treated to Rc 33-38 after tempering. I am concerned that the 10B22 won't fully harden in that diameter. My question is how large of a diameter bar will quench out fully hard in 10B22?





RE: 10B22 hardenability
The ASM Handbook Volume 1 lists the following:
Largest size to quench to 42 HRC in center
Alloy oil water
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4140 1.75 inches 2.4 inches
10B21 0.2 inches 0.7 inches
Regards,
Cory
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
RE: 10B22 hardenability
Thanks! Do you have any info on 40B37? That is the new idea that they came up with now.
RE: 10B22 hardenability
Regards,
Cory
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
RE: 10B22 hardenability