PM / 粉末鋼
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. Takefu Special Steel, 日本
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. Takefu Special Steel, 日本
SPG STRIX
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.
63–65
HRC
555759616365+
SPG STRIX 的誕生，源於一項開發「專為刀刃打造的粉末鋼」之構想，旨在作為切削工具時能發揮極致性能。
我們常聽聞傳統硬度約 HV900（HRC67）的高硬度粉末鋼在砂輪上難以研磨，但相同硬度的碳鋼卻鮮少出現這種情況。
明明硬度相同，研磨的難易度卻大相逕庭。為何會有這樣的差異？
答案在於，刀刃用鋼材的硬度其實是由「金屬基體硬度」與「金屬碳化物硬度」兩者共同組合而成。
SPG STRIX 是一款不鏽鋼粉末鋼，其研發重點在於強化金屬基體，因此即便具備高硬度，仍能擁有如同碳鋼般的加工性與易研磨特性。
憑藉強韌的金屬基體打造出理想的刃口，並帶來無與倫比的鋒利度，SPG STRIX 堪稱最頂級的刀具用粉末鋼。
我們常聽聞傳統硬度約 HV900（HRC67）的高硬度粉末鋼在砂輪上難以研磨，但相同硬度的碳鋼卻鮮少出現這種情況。
明明硬度相同，研磨的難易度卻大相逕庭。為何會有這樣的差異？
答案在於，刀刃用鋼材的硬度其實是由「金屬基體硬度」與「金屬碳化物硬度」兩者共同組合而成。
SPG STRIX 是一款不鏽鋼粉末鋼，其研發重點在於強化金屬基體，因此即便具備高硬度，仍能擁有如同碳鋼般的加工性與易研磨特性。
憑藉強韌的金屬基體打造出理想的刃口，並帶來無與倫比的鋒利度，SPG STRIX 堪稱最頂級的刀具用粉末鋼。
