Shirogami #3 vs Aogami Super

Detailed metallurgical comparison between White Paper Steel #3 and Super Blue Steel.

Lower-carbon variant of White Steel. Less pure, but significantly tougher and easier to sharpen. Often used for larger striking tools or entry-level blades where toughness is prioritized over maximum edge retention.

carbon0.80–0.90%

Sharpness

7

Edge Retention

5

Ease of Sharpening

10

Rust Resistance

2

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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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