"The Tanaka Sekiso series of knives by Tanaka features handmade custom knives that are hot forged with Damascus blades. The core blade is made from Hitachi Blue Paper Steel (HRC 60 and up)."
Above is an ad that I read. Rockwell 60 & up (not sure how far "up" that goes)
I read another ad for a White #2 (different maker) with a Rockwell of 61.
I was under the impression that White #2 was softer than blue Paper Steel.
Can someone clear that up for me, or direct me to the proper source?