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 源自於開發一種「以刀刃為導向的粉末鋼」的理念，旨在作為切割工具時能發揮最佳性能。
雖然我們常聽說硬度約為 HV900（HRC67）的傳統硬質粉末鋼在砂輪上難以研磨，但同樣硬度的碳鋼卻鮮少遇到此類問題。
儘管硬度相同，研磨的容易程度卻有差異，原因何在？
答案在於刀刃鋼的硬度是由「金屬基體的硬度」與「金屬碳化物的硬度」共同組成。
SPG STRIX 是一款不鏽鋼粉末鋼，透過強化金屬基體材料，在保持高硬度的同時，兼具碳鋼般的加工性與易研磨性。
它是刀具最理想的粉末鋼，其強韌的金屬基體能打造理想的刀刃，提供無與倫比的切割銳利度。
雖然我們常聽說硬度約為 HV900（HRC67）的傳統硬質粉末鋼在砂輪上難以研磨，但同樣硬度的碳鋼卻鮮少遇到此類問題。
儘管硬度相同，研磨的容易程度卻有差異，原因何在？
答案在於刀刃鋼的硬度是由「金屬基體的硬度」與「金屬碳化物的硬度」共同組成。
SPG STRIX 是一款不鏽鋼粉末鋼，透過強化金屬基體材料，在保持高硬度的同時，兼具碳鋼般的加工性與易研磨性。
它是刀具最理想的粉末鋼，其強韌的金屬基體能打造理想的刀刃，提供無與倫比的切割銳利度。
