heat treat of zt m390

Only the shadow knows. I don't think KAI advertises the HRC on any of their knives.
 
I scraped some plaster off of some concrete a month or so ago with their M390 (for my own research:)), it was fine. Ceramic stones sharpen it up quick:thumbup:

846F23BA-7225-4DF8-BF5C-B386229ADE88_zpsozd5w3db.jpg
 
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