What steel is used in Lightning Theme Ninjato blades?
Updated Feb 2026
Every blade in this collection is forged from T10 high-carbon steel, a tool-grade alloy prized among Japanese sword collectors for its fine grain structure and its ability to hold a well-defined hamon after clay tempering. T10 contains a small amount of silicon that contributes to edge retention and toughness, which is why it is favored for hand-forged collectibles over lower-carbon alternatives. The clay-tempering process applied to each blade creates a genuine, one-of-a-kind hamon line — not an acid-etched pattern — making each sword a unique artifact of the forging process.