PM / Powder Steel
Powder Metallurgy (PM)
A modern steel-making process where the alloy is atomised into a fine powder and then compressed under high pressure before sintering. This creates an exceptionally uniform carbide distribution — far finer and more even than conventionally cast steel. The result is a blade that achieves higher hardness without sacrificing toughness, holds a keener edge for longer, and is more resistant to chipping. PM steels are generally considered a step up in performance, though they can be harder to sharpen on coarse stones. 日本武生特殊鋼
A modern steel-making process where the alloy is atomised into a fine powder and then compressed under high pressure before sintering. This creates an exceptionally uniform carbide distribution — far finer and more even than conventionally cast steel. The result is a blade that achieves higher hardness without sacrificing toughness, holds a keener edge for longer, and is more resistant to chipping. PM steels are generally considered a step up in performance, though they can be harder to sharpen on coarse stones. 日本武生特殊鋼
SPG STRIX
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.
63–65
HRC
555759616365+
SPG STRIX 源自於開發「以刀刃表現為導向的粉末鋼」這一理念，旨在作為切削工具時發揮最佳效能。
雖然我們聽說過硬度約 HV900（HRC67）的傳統硬質粉末鋼在砂輪上研磨時較為困難，但同等硬度的碳鋼卻很少有這種情況。
雖然硬度相同，但研磨難易度卻有差異。為什麼會有這種差異？
答案在於刀鋼的硬度是「金屬基體硬度」與「金屬碳化物硬度」的綜合表現。
SPG STRIX 是一款強化金屬基體的不鏽粉末鋼，雖然硬度高，卻兼具碳鋼的加工性與研磨容易度。
它是製刀最佳的粉末鋼材，強韌的金屬基體能達到理想的刀刃並提供無與倫比的鋒利度。
雖然我們聽說過硬度約 HV900（HRC67）的傳統硬質粉末鋼在砂輪上研磨時較為困難，但同等硬度的碳鋼卻很少有這種情況。
雖然硬度相同，但研磨難易度卻有差異。為什麼會有這種差異？
答案在於刀鋼的硬度是「金屬基體硬度」與「金屬碳化物硬度」的綜合表現。
SPG STRIX 是一款強化金屬基體的不鏽粉末鋼，雖然硬度高，卻兼具碳鋼的加工性與研磨容易度。
它是製刀最佳的粉末鋼材，強韌的金屬基體能達到理想的刀刃並提供無與倫比的鋒利度。
