What steel types are used in these gray aikuchi pieces?
Updated Feb 2026
This collection features several distinct steels, each offering unique visual and structural characteristics. Damascus steel is created by forge-welding multiple layers of different alloys and folding them repeatedly; the result is a distinctive wavy or ladder-like grain pattern that is visible on every blade surface and completely unique from piece to piece. T10 tool steel is a high-carbon alloy with a small tungsten addition that improves edge retention and allows for a vivid real hamon temper line produced through differential clay hardening. Manganese steel offers excellent resilience at an approachable price point while still accepting a clean polish. Finally, 1045 carbon steel provides a reliable full-tang foundation ideal for entry-level collectors who want authentic construction without the premium of folded or alloyed variants. Each steel is chosen to complement the gray aesthetic and traditional hand-forging process.