I'm pretty sure that what I posted about SR77 & SR101 is correct. If not, I hope Dan will correct me. Manufacturers often use their own trade name for steels. Chrome vanadium steel used by Kabar is called 1095 Cro-Van which is basically the same steel Cold Steel used to call Carbon V, which is 50100-B, which is 0170-6 steel. But INFI is Jerry Busse's own invention. It is a unique steel found in no other brands. It is likely better than I need and in my experience SR101 does just fine. I do like the corrosion resistance of INFI.