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KAI vs Global vs Tojiro vs Miyabi: How to Actually Tell Japanese Knife Brands Apart

Hamono Club — Thu, 28 May 2026 10:32:37 +0000

When you start researching Japanese knives, four brand names come up constantly: KAI, Global, Tojiro, Miyabi. They're often presented as interchangeable premium options. They're not. Each has a distinct manufacturing philosophy, steel choice, and target user. Here's how to tell them apart.

KAI: The Most Complete Range

KAI Corporation has been manufacturing in Seki, Gifu Prefecture since 1908. Seki is Japan's industrial knife-making center -- the equivalent of Solingen in Germany, but with a continuous tradition going back centuries.

What sets KAI apart is range coherence. Their entry line, Wasabi Black, uses standard stainless steel at accessible prices. Their flagship line, Shun Classic, runs on VG-MAX steel (a proprietary evolution of VG-10 developed with Takefu Special Steel) wrapped in 16 layers of Damascus. The same brand, two different price brackets, logical progression between them.

For a developer audience: think of KAI as a company with a well-designed product ladder. You don't have to change ecosystems to upgrade.

Who it's for: Anyone who wants flexibility to start affordable and scale up without switching brands.

Global: The Design That Changed Western Kitchens

Global launched in 1985 out of Yoshida Metal Industry in Niigata Prefecture. The brief was specific: a Japanese knife that a Western cook would actually want to hold.

The result was radical for 1985 -- blade and handle forged as a single piece of Cromova 18 stainless steel, hollow handle filled with sand for balance. No wood, no rivets, no traditional aesthetics. Just function in a form that photographed beautifully.

Forty years later the design is unchanged because it didn't need changing. Cromova 18 is harder than most European stainless steels (56-58 HRC), easy to maintain, completely rust-proof. The 15-degree symmetric edge holds up well without demanding the careful drying routine that carbon steel requires.

Who it's for: People who want Japanese quality with zero maintenance overhead and a design that ages well.

Tojiro: The Hardest Value Proposition to Beat

Tojiro manufactures in Tsubame-Sanjo, Niigata Prefecture since 1955. Their DP series uses a VG-10 core from Takefu Special Steel in Fukui laminated between layers of stainless steel. The same core steel you find in knives that cost twice as much.

The difference with Tojiro is in the finishing: functional ecowood handle, no decorative Damascus layers, no premium presentation. The money goes into the blade.

VG-10 at 60-61 HRC holds a 15-degree edge well. For kitchen use -- the kind of cutting a developer might actually do -- the Tojiro DP Gyuto or Santoku will outperform any European knife at the same price by a significant margin.

Who it's for: Anyone optimizing for blade performance per euro spent. No compromises on steel, compromises on aesthetics.

Miyabi: When the Spec Sheet Matters

Miyabi is Zwilling's Japanese premium brand, manufactured in Seki under Japanese master bladesmith supervision. Their upper lines use SG2 (Super Gold 2), a powder metallurgy steel also from Takefu Special Steel that achieves 62-65 HRC while remaining fully stainless.

Powder metallurgy means the alloy is atomized into powder before sintering -- the resulting microstructure has smaller, more uniformly distributed carbides than conventionally cast steel. In practice: a finer edge, longer retention, more demanding sharpening when the time comes.

The Miyabi 5000MCD Gyuto runs SG2 at 63 HRC. That's the hardest widely-available production kitchen knife you can buy, and it shows in edge longevity.

Who it's for: Users who have already been through VG-10 and want to understand what the next level actually feels like.

Side by Side

Brand	Manufacturing	Steel	HRC	Entry Point	Strength
KAI	Seki, since 1908	VG-MAX / Wasabi stainless	58-61	~36 EUR	Range breadth
Global	Niigata, since 1985	Cromova 18	56-58	~60 EUR	Design + maintenance
Tojiro	Tsubame-Sanjo, since 1955	VG-10 (Takefu)	60-61	~89 EUR	Value per euro
Miyabi	Seki (Zwilling)	SG2 / MC63	62-65	~150 EUR	Peak performance

All four manufacture in Japan. None are European brands with Japanese naming -- they're actual Japanese manufacturers with decades of production history.

For the full breakdown with specific model recommendations at each price point, the complete guide is at hamonoclub.com/marcas-cuchillos-japoneses/.

Hamono Club is an independent editorial on Japanese knives. No manufacturer relationships -- just steel, geometry, and honest analysis.

Japanese Steel Explained: VG-10, Aogami, and SG2

Hamono Club — Thu, 28 May 2026 10:28:13 +0000

If you've spent any time researching Japanese knives, you've seen the steel names: VG-10, Aogami, SG2, Shirogami. They appear on product pages with little explanation. This is a technical breakdown of what each steel actually does -- and why it matters for edge retention, sharpening, and long-term performance.

VG-10: The Workhorse

VG-10 is a stainless steel produced by Takefu Special Steel in Fukui Prefecture. The name stands for "V Gold 10" -- a proprietary alloy that Takefu has refined over decades.

The composition that makes it interesting:

Carbon: ~1.0% (high enough for real hardness)
Chromium: ~15% (stainless, rust-resistant)
Cobalt: ~1.5% (improves hardenability, allows higher HRC)
Vanadium: ~0.2% (fine carbide formation, edge stability)

Typical hardness: 60-61 HRC. That's hard enough to hold a 15-degree edge geometry -- the standard for Japanese kitchen knives -- without chipping under normal use.

Where you'll find it: KAI Shun Classic, Tojiro DP, most mid-range Japanese knives available in Europe. The Tojiro DP Gyuto is probably the most documented VG-10 knife on the market, with thousands of long-term user reviews confirming edge retention data that matches the spec sheet.

Aogami (Blue Steel): The Carbon Option

Aogami -- "blue paper steel" -- is produced by Hitachi Metals (now Proterial) in their Yasugi facility in Shimane Prefecture. It's a high-carbon, non-stainless steel. That distinction matters.

Two main variants:

Aogami #1:

Carbon: 1.2-1.4%
Chromium: 0.2-0.5% (not enough for stainless)
Tungsten: 1.5-2.0% (wear resistance, edge stability)
Typical HRC: 62-65

Aogami #2:

Carbon: 1.0-1.2%
Slightly less tungsten
Typical HRC: 61-64
More forgiving to sharpen, slightly less wear-resistant

Aogami #2 is the entry point for carbon steel Japanese knives. Aogami #1 is what craftsmen in Sakai use for professional yanagiba and deba -- blades that need to hold a single-bevel edge at 8-10 degrees through a full shift.

The trade-off: carbon steel reacts. Aogami will patinate, and if left wet, it will rust. For the right user -- someone who wipes the blade after each cut -- it's the highest-performing option at any price point.

SG2 (Super Gold 2): Powder Metallurgy

SG2 is where the metallurgy gets interesting. Produced by Takefu Special Steel, it's a powder metallurgy steel -- the alloy is atomized into powder before sintering, which produces a microstructure that's impossible to achieve with conventional casting.

The result: extremely fine, uniformly distributed carbides. In practical terms:

Carbon: ~1.45%
Chromium: ~14-16% (fully stainless)
Typical HRC: 62-65
Edge stability comparable to Aogami #1, with stainless corrosion resistance

Where you'll find it: Miyabi 5000MCD, some Global SAI models. It's expensive to produce -- the powder metallurgy process adds cost at every stage. But for a stainless steel that performs at the level of high-carbon, there's no better option in production knives.

How They Compare

Steel	HRC	Stainless	Sharpening	Edge Life	Produced by
VG-10	60-61	Yes	Medium	Good	Takefu, Fukui
Aogami #2	61-64	No	Easy	Very good	Hitachi, Shimane
Aogami #1	62-65	No	Medium	Excellent	Hitachi, Shimane
SG2	62-65	Yes	Medium-hard	Excellent	Takefu, Fukui

What This Means in Practice

The steel choice isn't just a spec -- it determines the maintenance routine, the sharpening equipment you need, and how the knife performs over years.

VG-10 is the most practical entry point: stainless, predictable, widely available in knives with solid geometry. Aogami #2 is the next step if you're comfortable with carbon steel maintenance and want higher peak sharpness. SG2 is for when you want Aogami-level performance without the rust risk -- and you're willing to pay for it.

For a deeper breakdown of which knives use each steel -- with real availability data and long-term user analysis -- the full guide is at hamonoclub.com/aceros-japoneses-vg10-aus10-sg2-aogami/.

Hamono Club is an independent editorial on Japanese knives. No manufacturer relationships -- just steel, geometry, and honest analysis.