R2 / SG2 vs Aogami #2

Detailed metallurgical comparison between Super Gold 2 Powder Steel and Blue Paper Steel #2.

R2-SG2

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.

carbon1.25–1.45%chromium14.00–16.00%molybdenum2.00–3.00%vanadium1.80–2.20%
Sharpness
8
Edge Retention
9
Ease of Sharpening
5
Rust Resistance
8
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AOGAMI-2

Aogami #2

Blue Paper Steel #2

Similar to Aogami #1 but with slightly lower carbon and tungsten content. Offers an excellent balance of edge retention and toughness, making it the most-used steel among Japanese master blacksmiths. The sweet spot of the Aogami family — demanding enough to be worthy, forgiving enough to be reliable.

carbon1.05–1.15%chromium0.20–0.50%tungsten1.00–1.50%
Sharpness
8
Edge Retention
8
Ease of Sharpening
7
Rust Resistance
4
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