白紙3号

Shirogami #3

White Paper Steel #3

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.

Sharpness7/10
Edge Retention5/10
Ease of Sharpening10/10
Rust Resistance2/10
carbon0.80–0.90%
Hardness58–62 HRC HRC
Heat TreatmentEasy — very forgiving quench
Primary UseHeavy chisels, knives, general tools
ManufacturerHitachi Metals (now Proterial)

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