日本武生特殊鋼
Chromax
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.
60–62
HRC
555759616365+
Chromax 鋼是一種傳統熔煉的不鏽鋼，並非粉末冶金鋼（PM／SG2／R2 類型）。
由武生特殊鋼材株式會社生產（與 VG10、SG2／R2 等同廠）。
類型：傳統鑄錠鋼（非粉末冶金）
分類：高鉻不鏽鋼
特性：
良好的抗腐蝕性（高於 VG10）
容易研磨開刃
比多數粉末鋼更具韌性／較不脆
刃口保持性中等（低於 SG2／R2）
由武生特殊鋼材株式會社生產（與 VG10、SG2／R2 等同廠）。
類型：傳統鑄錠鋼（非粉末冶金）
分類：高鉻不鏽鋼
特性：
良好的抗腐蝕性（高於 VG10）
容易研磨開刃
比多數粉末鋼更具韌性／較不脆
刃口保持性中等（低於 SG2／R2）
Composition
Chromax Element Composition
Compare with
Chromax
—
14.5%
10.9%
7.3%
3.6%
0
C
1.0%
Cr
14.5%
V
0.3%
Mo
1.0%
Mn
0.5%
Si
0.5%
C — Carbon
Cr — Chromium
V — Vanadium
Mo — Molybdenum
Mn — Manganese
Si — Silicon
Hardness
60–62 HRC
555759616365+
