日本武生特殊鋼
V-Toku 1
Hardness
Rockwell C Hardness (HRC) measures how resistant a steel is to permanent deformation. For kitchen knives:
55–58 HRC — Soft. Easy to sharpen and forgiving of rough use, but dulls faster. Typical of most German knives.
59–61 HRC — Balanced. Good edge retention with manageable sharpening. Common in mid-range Japanese knives.
62–64 HRC — Hard. Excellent edge retention, holds a very fine edge. Requires more care and a fine stone to sharpen.
65+ HRC — Very hard. Exceptional edge longevity but more brittle — more prone to chipping if used roughly.
Higher is not always better — it depends on how you use and maintain your knife.
55–58 HRC — Soft. Easy to sharpen and forgiving of rough use, but dulls faster. Typical of most German knives.
59–61 HRC — Balanced. Good edge retention with manageable sharpening. Common in mid-range Japanese knives.
62–64 HRC — Hard. Excellent edge retention, holds a very fine edge. Requires more care and a fine stone to sharpen.
65+ HRC — Very hard. Exceptional edge longevity but more brittle — more prone to chipping if used roughly.
Higher is not always better — it depends on how you use and maintain your knife.
62–64
HRC
555759616365+
V-Toku 1（V特1號，V-Special 1）是武生特殊鋼對經典日立青一鋼的詮釋。作為合金碳鋼，其化學成分與青一極為接近，額外添加了釩及約1%更多鎢，再加上武生宣稱的更高純度，V-Toku 1 的耐磨性應該比青二稍有提升。
V-Toku 1 具有極佳的淬火性，可達 HRC64，許多刀匠會利用其高硬度製作極薄刀身，帶來極佳的切割體驗。武生也生產夾有銅或青銅層的夾鋼，因此 V-Toku 1 也常見於歐美刀匠作品，讓更多廚師能體驗碳鋼刀的優異切感。
V-Toku 1 具有極佳的淬火性，可達 HRC64，許多刀匠會利用其高硬度製作極薄刀身，帶來極佳的切割體驗。武生也生產夾有銅或青銅層的夾鋼，因此 V-Toku 1 也常見於歐美刀匠作品，讓更多廚師能體驗碳鋼刀的優異切感。
Composition
V-Toku 1 Element Composition
Compare with
V-Toku 1
—
2.25%
1.7%
1.1%
0.6%
0
C
1.25%
Cr
0.35%
V
0.2%
W
2.25%
Mn
0.5%
Si
0.35%
P
0.03%
S
0.03%
Ni
0.25%
C — Carbon
Cr — Chromium
V — Vanadium
W — Tungsten
Mn — Manganese
Si — Silicon
P — Phosphorus
S — Sulfur
Ni — Nickel
Hardness
62–64 HRC
555759616365+
Knives in V-Toku 1
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