Heat Treating CPM S90V

Randy Wirtz

Randy Wirtz

Joined
Feb 29, 2016
Messages
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This is my first time posting a question on this forum. I’ve learned so much from you all from reading over the interesting discussions. My question revolves around heat treating CPM S90V. I’ve looked through the archives but couldn’t find much. Maybe I’m not looking in the right place. If there is already information available, I’d be grateful to be directed in the right direction.

I’m wondering what you guys have found to get a good heat treat of the S90V? From my research, it seems to be a really good choice for a blade steel provided that the proper hardness can be developed. I’ve looked over the data from Crucible, but it would be nice to get some practical input from the pro’s. Thanks in advance for any guidance.
 
I send mine to Peters' at a target HRC of 60-61. Have gotten excellent results in edge holding. Several folks I made hunting/skinning knives for use them and reportedly get through several big game animals and hogs with no issues.
 
To clarify I am NOT a pro...but I did stay at a holiday inn express!
 
Yeah, I've use Peter's for a lot of my work. I recently purchased an oven and am starting to do most of my work in house. I'm surprised how little content I've come across on heat treating this steal considering how well it seems to perform.
 
I've already looked over the stuff from Crucible. You'll often find that what the manufacturer recommends is not fine tuned to the knife maker.
 
The only part of the manufacturer HT info that needs tweaking for the high alloy stainless steels is the temper. Use the lower range, as we want hardness over extreme toughness.

BTW, cryo is a requisite for the best blade edge in the super steels.
 
Stacy will sub zero be adequate for the S90V? Crucible states that a "freezing treatment can be done between tempers. I've always used sub zero before any tempering with steals such as D2 or CPM 3V.

Do you think that an aluminum plate quench will suffice?
 
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