HAP40 vs Aogami #1

A powder-metallurgy high-speed steel from Hitachi, designed originally for industrial cutting tools. Japanese knife and tool makers adopted it for its exceptional hardness and wear resistance. The vanadium and cobalt additions produce carbides that resist abrasion beyond almost any other steel in this reference.

High-carbon steel alloyed with chromium and tungsten for enhanced wear resistance and edge retention. Ideal for hard woods and heavy use. Forged by masters who prize its demanding nature, it rewards a skilled sharpener with extraordinary edges that outlast almost any other carbon steel.