黄紙

Kigami

Yellow Paper 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.

Sharpness7/10
Edge Retention5/10
Ease of Sharpening8/10
Rust Resistance3/10
carbon1.05–1.15%
Hardness58–61 HRC HRC
Heat TreatmentEasy — tolerant of imprecision
Primary UseSaws, general tools, hammers
ManufacturerHitachi Metals (now Proterial)

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