Takefu Special Steel, Japan 🇯🇵
COSP (Cobalt Special) Cobalt Special 鋼
硬度
洛氏硬度(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+
武生特殊鋼的Cobalt Special鋼，常被簡稱為鈷鋼，是一種頂級的高性能鋼材，以其卓越的鋒利保持度與硬度聞名。此鋼材在成分中添加了大量的鈷，顯著提升了耐磨性與強度。透過鈷與碳、鉻、鉬等其他元素的結合，使這種鋼材能在不犧牲韌性的前提下達到極高的硬度。Cobalt Special鋼專為長時間維持銳利刀刃而設計，即使在高強度使用下依然表現優異，因此備受推崇，廣泛應用於製作高階廚刀與切削工具。
Mojin與黑崎等職人皆推出了極為出色的COSP作品。
Mojin與黑崎等職人皆推出了極為出色的COSP作品。
成分
COSP (Cobalt Special) 元素組成
比較對象
COSP (Cobalt Special)
—
16.0%
12.0%
8.0%
4.0%
0
C
1.05%
Cr
16.0%
V
0.25%
Mo
1.5%
W
0.25%
Co
2.5%
C — 碳
Cr — 鉻
V — 釩
Mo — 鉬
W — 鎢
Co — 鈷
硬度
60–62 HRC
555759616365+
Knives in COSP (Cobalt Special)
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售罄
黑崎打刃物
黑崎笹目 COSP 牛刀 240mm
售罄
黑崎打刃物
黑崎 笹目 COSP 文化刀 170mm
特價
黑崎打刃物
黑崎 笹目 COSP 三德刀 170mm
售罄
黑崎打刃物
黑崎 笹目 COSP 筋引 270mm
售罄
黑崎打刃物
黑崎笹目 COSP 筋引 240mm
售罄
明神利器
明神利器 Cobalt Special鋼 牛刀 240mm 黑檀木柄
特價
明神利器
明神 Cobalt Special鋼 COSP 三德刀 180mm 黑檀木柄
售罄
明神利器
明神利器 Cobalt Special鋼 牛刀 210mm 黑檀木柄
售罄
明神利器