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，以其優異的機械性能聞名，包括高抗彎強度、屈服點、延伸率、面積縮減率和衝擊強度。其精緻且低雜質的成分提升了研磨性和熱鍛造性。VG5憑藉較高的鉻（Cr）和碳（C）含量，在這些方面超越了常見的不鏽鋼等級。這種成分有助於抑制共晶碳化物結晶，通過均衡的元素比例和精緻碳化物的均勻結構，最大化硬度。在製造過程中，VG5經過嚴格的精煉工藝，以減少雜質並實現最佳的晶粒結構，並透過策略性的熱處理進一步優化。與VG2相比，VG5具有更高的碳和鉬（Mo）含量，並添加了釩（V），從而形成更細的碳化物。這種組合確保了硬度、耐磨性和耐腐蝕性的完美平衡，使VG5成為消費級廚房工具的熱門選擇。
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+
