スーパーゴールド2

R2 / SG2

Super Gold 2 Powder Steel

A powder-metallurgy stainless steel developed by Takefu Special Steel. R2 and SG2 refer to the same steel from different suppliers. Combines surprisingly good stainless properties with very high hardness and excellent edge retention. One of the most practical high-performance steels for everyday use.

Sharpness8/10
Edge Retention9/10
Ease of Sharpening5/10
Rust Resistance8/10
carbon1.25–1.45%chromium14.00–16.00%molybdenum2.00–3.00%vanadium1.80–2.20%
Hardness62–65 HRC HRC
Heat TreatmentModerate — more tolerant than ZDP-189
Primary UsePremium kitchen knives, outdoor knives, specialist tools
ManufacturerTakefu Special Steel (R2) / Kobelco (SG2)

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