Aogami Blue #1 Steel Japanese knives

Produced by Hitachi Metals, Aogami steel comes in three variants  Aogami #1, #2, and Super Blue. Each offers different balances of hardness, sharpness, and toughness. While all three excel in edge retention and durability, they require careful sharpening and handling to maintain their performance.

Aogami #1 steel has the highest carbon content of the Blue Steel variants, typically around 1.2–1.4%, providing excellent hardness and edge retention. The added chromium and tungsten enhance durability while maintaining a fine, sharp edge. Its hardness makes it somewhat brittle and more prone to chipping if mishandled, making it best suited for precise cutting tasks where sharpness is prioritized over toughness.