SK4鋼
SK4 Carbon Steel
JIS SK4 Tool SteelA standardized Japanese Industrial Standard (JIS) carbon tool steel. Slightly higher carbon than SK5 and lower than SK2, making it one of the most balanced general-purpose tool steels in the JIS classification. Widely used for saw blades, knives, and hand tools where consistent heat treatment and predictable performance matter more than ultimate edge retention.
Performance CharacteristicsChemical Composition
Sharpness7/10
Edge Retention6/10
Ease of Sharpening9/10
Rust Resistance3/10
carbon0.90–1.00%manganese0.10–0.50%silicon0.10–0.35%
Technical DataFind tools in SK4 Carbon Steel
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