Why Japanese White #2 Steel (白紙二号鋼 - Shirogami #2) Is a Favorite Among Knife Enthusiasts
白紙二号鋼 — The Purity Behind the Edge
When it comes to high-performance Japanese kitchen knives (和包丁 — wabōchō), one steel stands out among traditional craftsmen and seasoned chefs: White #2 steel, or in Japanese, Shirogami #2. This legendary high-carbon steel is revered for its purity, fine edge retention, and ease of sharpening.
Produced by Hitachi Metals, Shirogami #2 is a carbon steel known for its simplicity and performance. It belongs to the Shirogami (white paper) family — so named because the raw steel is wrapped in white paper when delivered to traditional blacksmiths (鍛冶屋 — kajiya).
| Property | Detail |
|---|---|
| Carbon content | Approx. 1.05% |
| Alloying elements | None added — no chromium or molybdenum |
| Impurity level | Extremely low |
| Typical construction | Clad with a soft iron core (jigane — 地金) for the kasumi (霞) finish |
A takumi inspecting the finished edge before it leaves the workshop
Shirogami #2 takes an incredibly fine edge, making it ideal for sushi and sashimi (刺身) preparation.
Compared to many stainless steels, it sharpens easily on a toishi (砥石), even for those newer to whetstone work.
Widely used by traditional blacksmiths in Seki City (関市) and Sakai (堺), regions known for centuries-old forging methods.
- Since Shirogami #2 is not stainless (錆びやすい — sabiyasui), wipe the blade dry after each use.
- Avoid soaking the blade or cutting acidic foods without cleaning it afterward.
- Lightly oil the blade with hamono abura (刃物油) for long-term storage.
- Over time the knife will develop a natural sabi (錆), which protects the blade and gives it character.
White #2 steel — Shirogami #2 — offers an unmatched combination of tradition, sharpness, and artistry. It's a steel chosen by serious chefs (料理人 — ryōrinin) and collectors who value the soul (魂 — tamashii) of a well-made Japanese knife. At JapanChefKnife.com, we proudly offer a curated selection of handmade Japanese knives forged with Shirogami #2 steel — discover the true meaning of wakokoro (和心) and experience the cutting precision of a traditional blade.
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