VG-10 (often called "Gold Steel" in Japan) is a high-end martensitic stainless steel produced by Takefu Special Steel Co. Ltd in Japan. It is perhaps the most famous Japanese steel in the global culinary world, specifically designed for high-quality kitchen knives.
Key Characteristics
The "Gold Standard" for Kitchen Knives: It is the default choice for premium Japanese kitchen cutlery because it offers a near-perfect balance of edge holding, rust resistance, and sharpness.
High Hardness: It is typically heat-treated to 60–62 HRC. This allows the knife to be ground to a very acute, thin angle for precision slicing without the edge "rolling."
Excellent Edge Retention: Due to its high carbon and vanadium content, it stays sharp much longer than the 440 series or AUS-8.
Cobalt-Enhanced Stability: The addition of Cobalt allows for high hardness without extreme brittleness. It also makes the edge more stable during heavy use.
Corrosion Resistance: It is highly stainless and resists food acids and moisture exceptionally well.
Chemical Composition
The "VG" stands for V-Gold, representing the high quality of the alloy:
Carbon (C): 1.0% (For high hardness and edge retention).
Chromium (Cr): 15.0% (For excellent rust resistance).
Cobalt (Co): 1.5% (Strengthens the steel and allows for higher hardness).
Molybdenum (Mo): 1.0% (Increases toughness and prevents pitting).
Vanadium (V): 0.2% (Refines grain for a sharper edge).
Common Applications
Premium Japanese Kitchen Knives: Used by world-famous brands like Shun, Tojiro, and Yoshihiro. It is often the "core" of Damascus-clad blades.
High-End Pocket Knives: It is a signature steel for Spyderco (used in the Delica, Endura, and many other Japanese-made models).
Surgical Equipment: Used where a sharp, sterile, and rust-proof edge is required.
VG-10 vs. 10Cr15CoMoV
As we discussed earlier, 10Cr15CoMoV is the Chinese equivalent of VG-10. While they are chemically similar, VG-10 is often perceived as having a slightly "cleaner" production process and more consistent heat treatment due to its long history in Japan.