Kigami vs Aogami Super

Detailed metallurgical comparison between Yellow Paper Steel and Super Blue Steel.

A high-carbon steel with slightly more impurities than Shirogami. Often used for saws and general-purpose tools. Easier to forge but does not reach the extreme sharpness or edge retention of Blue or White steels. A workhorse steel with an honest, reliable character.

carbon1.05–1.15%

Sharpness

7

Edge Retention

5

Ease of Sharpening

8

Rust Resistance

3

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The highest-carbon variant among Aogami steels. Includes vanadium and molybdenum for extreme edge retention and hardness. Revered and feared in equal measure — its edge outlasts almost everything, but requires a master's touch to sharpen properly. The pinnacle of the Hitachi carbon steel family.

carbon1.40–1.50%chromium0.30–0.50%tungsten2.00–2.50%vanadium0.30–0.50%molybdenum0.30–0.52%

Sharpness

9

Edge Retention

10

Ease of Sharpening

5

Rust Resistance

4

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