Semi-Stainless
Semi-Stainless Steel
Semi-stainless steels sit between carbon and full stainless. They will rust if left wet or neglected, but under normal use they tend to develop a patina — a dark, protective layer — rather than forming aggressive surface rust. Rinse and wipe dry after use and you will rarely have issues. Much more forgiving than true carbon steel, while still offering excellent cutting performance. 히타치 특수강, 일본
Semi-stainless steels sit between carbon and full stainless. They will rust if left wet or neglected, but under normal use they tend to develop a patina — a dark, protective layer — rather than forming aggressive surface rust. Rinse and wipe dry after use and you will rarely have issues. Much more forgiving than true carbon steel, while still offering excellent cutting performance. 히타치 특수강, 일본
YXR7
Hardness
Rockwell C Hardness(HRC) 는 강철이 영구 변형에 얼마나 강한지를 나타냅니다. 주방용 칼의 경우:
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 강은 탁월한 인성과 내마모성으로 알려진 고속도 공구강으로, 주방용 칼에 훌륭한 선택지입니다. 이 강은 높은 탄소 함량과 바나듐, 몰리브덴 등의 합금 원소를 특징으로 하여 경도와 날붙이 유지력을 향상시킵니다.
적당한 탄소 및 크롬 함량 덕분에 사실상 세미 스테인리스강으로서, 탄소강처럼 연마가 쉬우면서도 높은 수준의 관리를 필요로 하지 않습니다.
YXR7의 인성은 일상적인 주방 작업의 요구 사항을 견디며 깨지거나 부러지지 않도록 보장하고, 내마모성은 시간이 지나도 예리함을 유지하여 연마 빈도를 줄여줍니다. YXR7 강으로 제작된 칼은 내구성이 뛰어나고 정밀 절단을 손쉽게 수행할 수 있어 가장 까다로운 환경에서도 만족스러운 성능을 제공합니다.
적당한 탄소 및 크롬 함량 덕분에 사실상 세미 스테인리스강으로서, 탄소강처럼 연마가 쉬우면서도 높은 수준의 관리를 필요로 하지 않습니다.
YXR7의 인성은 일상적인 주방 작업의 요구 사항을 견디며 깨지거나 부러지지 않도록 보장하고, 내마모성은 시간이 지나도 예리함을 유지하여 연마 빈도를 줄여줍니다. YXR7 강으로 제작된 칼은 내구성이 뛰어나고 정밀 절단을 손쉽게 수행할 수 있어 가장 까다로운 환경에서도 만족스러운 성능을 제공합니다.
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
Typical values from third-party sources.
Hardness
62–65 HRC
555759616365+
YXR7 Composition
What's in YXR7
What each element does in your knife.
| Element | Composition | What it does in your knife |
|---|---|---|
| CrChromium | 5.0% | Raises corrosion resistance; at roughly 13%+ free chromium the steel qualifies as stainless. Also improves hardenability and wear. |
| MoMolybdenum | 5.0% | Improves hardenability and toughness, boosts corrosion resistance, and helps the steel hold hardness under heat. |
| VVanadium | 1.1% | Forms extremely hard vanadium carbides for superior edge retention, and refines the grain for a finer, tougher edge. |
| WTungsten | 1.1% | Forms hard carbides for wear resistance and edge stability, and keeps the steel hard even at elevated temperatures. |
| CCarbon | 0.8% | The primary hardening element. More carbon means a harder edge that holds longer — but past a point it trades away toughness and rust resistance. |
Composition from zknives (K&S steel dataset) reference material. These ranges come from the K&S steel composition dataset, which is derived from zknives; maker figures are cited separately only when they are used on the page.
