탄소강 Carbon Steel

Carbon steel is reactive — it will rust quickly if not properly cared for. Always wash immediately after use, dry thoroughly, and apply a thin coat of food-safe oil (camellia, mineral) before storage. Over time it develops a patina that offers some natural protection and, for many users, becomes part of the knife's character. Rewarding to use, but not recommended if you want a "wash and forget" knife. 히타치 특수강, 일본

백1강 / 백1강 白一鋼

Hardness

62–65 HRC

555759616365+

백1강(Shirogami #1)은 뛰어난 순도와 성능으로 고급 일본 칼날 소재 분야에서 두각을 나타냅니다. 백2강을 더욱 정제하고 탄소 함량을 높여 개발된 고급 버전으로, 증가된 탄소 덕분에 백2강보다 약간 높은 경도(HRC)를 달성하여 매우 날카로운 절삭력을 구현합니다. 다만 탄소 함량 증가로 인해 취성도 다소 높아졌습니다. 그럼에도 불구하고 백1강은 탁월한 절단력 유지와 재연마의 용이성 덕분에 전문 셰프, 특히 전통 일식 셰프들에게 큰 사랑을 받고 있습니다. 청지강 계열과 달리 크롬이나 텅스텐을 포함하지 않고 오직 최고의 날카로움 추구에 집중하여, 비교할 수 없는 절삭력을 제공하는 대신 반응성이 높아 사용 후 즉시 닦고 건조하는 등 부식 방지를 위한 세심한 관리가 필요합니다.

Compare with

백1강 / 백1강

—

1.3% 1.0% 0.7% 0.3% 0

1.3%

0.25%

0.15%

0.025%

0.004%

C — Carbon Mn — Manganese Si — Silicon P — Phosphorus S — Sulfur

Typical values from third-party sources.

Hardness 62–65 HRC

555759616365+

Steel

백1강 / 백1강

What's in 백1강 / 백1강

What each element does in your knife.

백1강 / 백1강 element composition
Element	Composition	What it does in your knife
CCarbon	1.25–1.35%	The primary hardening element. More carbon means a harder edge that holds longer — but past a point it trades away toughness and rust resistance.
MnManganese	0.2–0.3%	Aids hardenability and strength and acts as a deoxidiser in smelting. Too much can reduce toughness.
SiSilicon	0.1–0.2%	Strengthens the steel matrix and acts as a deoxidiser, improving hardness and resistance to oxidation.
PPhosphorus	≤ 0.025%	An impurity from smelting. Even small amounts promote brittleness, so steelmakers keep it as low as possible.
SSulfur	≤ 0.004%	An impurity that reduces toughness and promotes brittleness; only ever added deliberately in free-machining steels.

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.