True, I guess with razors you cant go 64-65 HRC otherwise they would chip just looking at them. My experience with "steel" is basically with kitchen knives...Japanese sungle bevels (sushi knives). I guess the steel fo the razors need to be tempered "down" just a bit more than for knives. Wish I could find some razors made from ZDP-189 or Cowry-x...those would be intersting.