I PM's our Master Heat Treatment guy, Mike Blue and his reply was this:
"Hello Scott,
Those blanks heat treated quite nicely without a lot of hassle. I austenitized to 1500 F and held to soak for five minutes then quenched in canola oil. Rc was around 60, but my notes are not right in front of me."
This is what they will get then, I will report back later with results. Mike uses salts for his heat treatment and has infinite control of his equipment & I work with fire...but I am sure I can get close enough that your stones or face would never know off the blades.
For those who don't know Mike, he has forgotten more than I will ever know about heat treating...a true master and gentleman. We are blessed to have him a member here on SRP.