Quote:
Originally posted by Bill Harsey
I have never before heard of this steel designation. I've also NEVER heard of zone selective cryogenic treatment. There would be NO value in doing zone cryo because that step also aids ultimate tensile strength of any tool steel which would benefit from cryogenic treatment. Cryogenic (deep freeze treat) must be done in proper sequence during the hardening and tempering of what ever steel your working with to do any good. Many times some steels may benefit from cryogenic treatment because they have undergone an incomplete heat treat. Yes I've seen the ads, they had a huge booth at Blade Show in Atlanta just a couple weeks ago but no knives on display.
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Translated into dumb tooth grinder language....
"Save your money and buy a Harsey in CPM S-30V" ..yep got it sir.
