What steel grades are available in the authentic Japanese katana collection?
Updated Feb 2026
Authentic Japanese katana in this collection are available across the full range of high-carbon steel grades used in serious Japanese sword collecting. T10 carbon steel is the premium grade, available with clay tempering that creates a differential heat treatment producing a visible hamon along the blade length - the most traditional and visually distinctive mark of a properly constructed Japanese blade. The hamon on a T10 clay-tempered katana demonstrates that the edge and spine have been hardened to different degrees, replicating the construction method of historical Japanese sword-making. 1060 carbon steel provides excellent blade hardness in a grade widely used in quality katana construction. 1045 carbon steel is the most accessible grade, providing reliable full-tang construction and proper blade hardness appropriate to a genuine collectible. Damascus steel authentic katana combine fold-forged layered blade patterning with traditional Japanese fitting standards for collectors who want both blade material complexity and traditional construction.