日立特殊鋼，日本
YXR7
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.
62–65
HRC
555759616365+
YXR7 鋼是一種以高韌性和耐磨性著稱的高速工具鋼，非常適合用於廚刀。這種鋼材含有高碳和其他合金元素，如釩和鉬，提升了其硬度及持久鋒利度。
適中的碳鉻含量使其成為半不鏽鋼，與碳鋼一樣容易研磨，但不需高強度保養。
YXR7 的高韌性確保其能承受日常廚房使用而不易崩口或斷裂，同時優異的耐磨性也讓刀刃長時間保持鋒利，減少頻繁磨刀的需求。YXR7 鋼製成的刀具以耐用及精細切割能力著稱，能滿足最嚴苛的廚房環境需求。
適中的碳鉻含量使其成為半不鏽鋼，與碳鋼一樣容易研磨，但不需高強度保養。
YXR7 的高韌性確保其能承受日常廚房使用而不易崩口或斷裂，同時優異的耐磨性也讓刀刃長時間保持鋒利，減少頻繁磨刀的需求。YXR7 鋼製成的刀具以耐用及精細切割能力著稱，能滿足最嚴苛的廚房環境需求。
Composition
YXR7 Element Composition
Compare with
YXR7
—
5.0%
3.8%
2.5%
1.3%
0
C
0.8%
Cr
5.0%
V
1.1%
Mo
5.0%
W
1.1%
C — Carbon
Cr — Chromium
V — Vanadium
Mo — Molybdenum
W — Tungsten
Hardness
62–65 HRC
555759616365+
Knives in YXR7
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