VG10 Steel Explained: What It Is, How It Compares, and Why It's Used in Damascus Kitchen Knives
VG10 is a Japanese high-carbon stainless steel developed by Takefu Special Steel in Echizen, Japan. It's one of the more widely used steels in premium kitchen knives — valued for its hardness, edge retention, and corrosion resistance. At Hephais, VG10 forms the cutting core of every knife in both the Aurora and Knox Damascus lines.
What Is VG10 Steel?
VG10 (also written VG-10) is a proprietary stainless steel grade produced by Takefu Special Steel. The name comes from "V Gold" — an internal designation reflecting its position as a premium-grade cutlery steel — and has been used in Japanese kitchen knife production since the 1980s. It remains a benchmark for mid-to-high range knife steel today.
With around 15% chromium content, VG10 is fully stainless — it resists rust and corrosion under standard kitchen conditions. Unlike German knife steels, which prioritise toughness and ease of maintenance, VG10 is tuned for hardness and fine edge geometry.
VG10 Steel Composition
VG10's properties come from a specific balance of alloying elements:
- Carbon (~1.0%) — Increases hardness and enables a sharper, more acute edge angle.
- Chromium (~15%) — Provides stainless properties. Above ~13% chromium, steel becomes corrosion-resistant.
- Molybdenum (~1%) — Improves strength and corrosion resistance, particularly against pitting.
- Vanadium (~0.3%) — Refines the grain structure, which improves toughness and wear resistance at a microscopic level.
- Cobalt (~1.5%) — This is what distinguishes VG10 from most comparable steels. Cobalt allows higher hardness without a proportional increase in brittleness, and is absent in steels like AUS10.
Hardness and Edge Retention
When heat-treated correctly, VG10 reaches 60–62 HRC on the Rockwell scale. This is meaningfully harder than most German kitchen knives, which typically sit at 56–58 HRC.
Higher hardness means the edge geometry holds longer between sharpening sessions. A VG10 knife used daily in a home kitchen may only need sharpening every few months with regular honing, compared to a softer steel knife that needs more frequent maintenance.
The trade-off is brittleness. Harder steels are more susceptible to chipping under lateral stress — twisting a blade while cutting through a dense vegetable, or using the side of the knife to crush garlic, can chip the edge. VG10 rewards proper knife technique.
VG10 vs German Steel
German kitchen knives typically use steels like X50CrMoV15, which reaches 56–58 HRC. Here is how they compare in practice:
- Edge angle: German knives are usually ground to 20–22° per side. VG10 Japanese knives are typically ground to 15–17°, producing a finer cutting edge.
- Edge maintenance: German steel, being softer, responds well to a honing rod — the slightly folded edge realigns easily. VG10 is harder; when the edge needs attention, it generally needs actual sharpening on a whetstone rather than just honing.
- Feel and cutting style: German knives are heavier with more blade curve, suited to a rocking cut. VG10 Japanese knives are lighter, with a flatter profile suited to push-cutting and pull-cutting technique.
- Durability under rough handling: German steel is more forgiving. If your kitchen involves hard cutting boards, occasional bone contact, or rough use, German steel tends to absorb that better.
Neither is universally better. The right choice depends on your cutting style, your maintenance habits, and what you are preparing.
VG10 vs AUS10 Steel
AUS10 is a Japanese stainless steel produced by Aichi Steel, used in knives at a similar price point to VG10. Both are premium Japanese cutlery steels with similar hardness targets — and it is a fair comparison.
The key structural difference is cobalt. VG10 contains around 1.5% cobalt; AUS10 does not. Cobalt in steel allows higher achievable hardness without proportionally increasing brittleness, giving VG10 slightly better edge retention at equivalent hardness levels.
In practice, a well-made knife in either steel will perform well. Heat treatment quality and blade geometry have more influence on real-world cutting performance than the steel grade alone.
Why VG10 Is Used as the Core in Damascus Knives
Damascus kitchen knives are not made from a single steel. They are constructed by forge-welding a hard core steel between layers of softer iron or steel cladding, then drawing out and grinding the billet into a blade. The flowing pattern visible on the finished surface comes from acid etching, which reveals the contrast between the different materials.
VG10 is a natural choice for the cutting core for several reasons:
- It is hard enough to hold a thin, precise edge
- Its cobalt content provides more toughness than comparable high-carbon steels at the same hardness level
- The softer outer Damascus cladding acts as a support structure, allowing the blade to absorb minor stress without cracking the harder core
The result is a knife that cuts with precision while being more resilient than a blade made entirely from the same hard steel throughout.
Caring for a VG10 Knife
VG10 is stainless and handles normal kitchen conditions well. A few habits will extend the life of both the steel and the edge:
- Hand wash only. Dishwasher detergent is abrasive, and the heat and moisture cycle can damage both the blade finish and handle material. Wash by hand and dry immediately after use.
- Rinse after cutting acidic foods. Lemon juice, tomatoes, and similar produce will not immediately damage VG10, but leaving acidic residue on the blade for extended periods can cause surface marks over time.
- Hone with a ceramic or glass rod. VG10 is too hard to benefit much from a steel honing rod. A fine ceramic rod realigns the edge more effectively without damaging it.
- Sharpen on a whetstone. Pull-through sharpeners remove too much material and can damage the geometry of a fine Japanese edge. A whetstone — starting at 320–400 grit to reset the edge, finishing at 1000–3000 grit — maintains the edge without unnecessarily shortening the blade's lifespan.
Hephais carries the Shapton Ceramic #320 for edge repair and setting, and the Shapton Ceramic #5000 for polishing and finishing — both suited to VG10 Damascus knives.
VG10 Damascus Knives from Hephais
The Aurora and Knox knife lines at Hephais are both built on VG10 Damascus construction — a VG10 core with Damascus-layered cladding on either side.
Aurora is finished with a polished surface that brings out the Damascus pattern clearly. It is designed as a smooth, versatile performer suited to a wide range of kitchen tasks. The maple burl and black resin handle gives it a distinctive look that holds up in professional kitchen use.
Knox uses a darker matte Damascus finish with an ebony and resin handle. It is designed for precision cutting work where control and feedback through the blade matter.
Both lines share the same core material. The differences are in surface finish, handle design, and intended cutting style.
Frequently Asked Questions
Is VG10 steel good for kitchen knives?
Yes. VG10 is a well-established premium cutlery steel offering high hardness (60–62 HRC), solid edge retention, and corrosion resistance. It performs well for both professional and serious home kitchen use.
Is VG10 better than German steel?
VG10 is harder and holds a finer edge for longer. German steel is softer, easier to maintain with a honing rod, and more tolerant of rough handling. Which performs better depends on your cutting technique and how consistently you maintain your knives.
How hard is VG10 steel?
When properly heat-treated, VG10 reaches 60–62 HRC on the Rockwell scale — harder than most German kitchen knives (56–58 HRC) and within the standard range for premium Japanese cutlery.
What is Damascus VG10?
Damascus VG10 refers to a blade where VG10 forms the cutting core, surrounded by multiple layers of Damascus steel cladding. The cladding creates the distinctive etched surface pattern and provides structural support around the harder core. The VG10 core is what forms the cutting edge itself.
What is the difference between VG10 and AUS10?
Both are Japanese stainless steels with similar hardness targets. The main structural difference is cobalt — VG10 contains around 1.5% cobalt, which AUS10 lacks. Cobalt allows higher hardness without proportionally increasing brittleness, giving VG10 slightly better edge retention. In practice, both steels perform well in quality knives.
Can VG10 knives go in the dishwasher?
No. Dishwasher detergent is abrasive and the heat and moisture cycle can damage the blade finish and handle material. Hand wash with warm water and dry immediately after use.
How do you sharpen a VG10 knife?
Use a whetstone. Start at 320–400 grit to re-establish the edge, then progress to 1000–3000 grit to refine and polish it. Avoid pull-through sharpeners — they remove too much material and can damage the geometry of a fine Japanese edge.
