I called the Randall shop once and asked about the Rc hardness of their blades, specifically, my #14, #1, etc. in stainless. I was told the Rc for both 01 and 440B was around 57 at the edge. I didn't think to ask at the time why the Rc may have been different elsewhere on the blade. They harden to this number to enhance toughness while still allowing the normal user to sharpen the edge.
My last Randall Knife Society newsletter indicated they were using ATS34 for their Model #10's, triathlete, and some model #14's as well!
Bruce Woodbury