What steel types are used in blue blade wakizashi?
Updated Mar 2026
The blue blade wakizashi in this collection are forged primarily from two steel types: manganese steel and T10 high-carbon steel. Manganese steel offers notable toughness and resistance to deformation, making it a popular choice for display pieces that may also be used for test cutting. T10 high-carbon steel, by contrast, is prized among collectors for its ability to take a finer polish and a more defined hamon — the visible temper line produced during differential hardening. Both steels are fully compatible with the blue patination process, though T10 pieces often show more pronounced grain character beneath the blue finish, which many collectors find especially appealing.