Knifemaker.ca
Dealer - Purveyor
I use cryo on pretty much all high alloy steels, stainless or not. I don't use cryo on simple carbon steels. First, cryo is best as a continuation of quench and I keep hearing how important it is to get carbon blades straight into temper from room temperature or close. It just doesn't seem the risk is worth it. For the high alloy stuff, it at least meets the test of "do no harm" and usually appears to do measureable good. That's my path for now.