Takefu Special Steel, 日本
VG5鋼 V 金 5 號
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.
58–59
HRC
555759616365+
VG5 鋼是一種高階不鏽鋼刀具鋼材，以其優異的機械性能著稱，具備高抗彎強度、降伏點、延伸率、斷面縮減率及衝擊韌性。其精煉且低雜質的成分組成，帶來更佳的研磨性與熱鍛加工便利性。VG5 鋼的特色在於其鉻（Cr）與碳（C）含量較高，在這方面超越了常見的不鏽鋼等級。此成分有助於抑制共晶碳化物結晶，透過均衡的元素比例與細緻碳化物的均勻組織，將硬度發揮至極致。在製造過程中，VG5 鋼經過嚴謹的精煉程序以最大限度減少雜質並獲得最佳晶粒結構，再輔以策略性的熱處理進一步強化性能。相較於 VG2 鋼，VG5 鋼擁有更高的碳與鉬（Mo）含量，並添加了釩（V），使其碳化物更為細緻。這種組合確保了硬度、耐磨性與耐腐蝕性之間的絕佳平衡，也讓 VG5 鋼特別受到消費級廚房刀具市場的歡迎。
成分
VG5鋼 元素組成
比較對象
VG5鋼
—
14.0%
10.5%
7.0%
3.5%
0
C
0.75%
Cr
14.0%
V
0.15%
Mo
0.3%
C — 碳
Cr — 鉻
V — 釩
Mo — 鉬
硬度
58–59 HRC
555759616365+
