What steel and construction standards are used in old katana collectibles?
Updated Feb 2026
Old katana collectibles in this collection are built to the same fundamental construction standards as any quality Japanese sword: full-tang high-carbon steel blade running from kissaki tip through the complete handle, secured by a mekugi retention pin, with authentic Japanese sword-style fittings. The steel grades most associated with the traditional old katana aesthetic are T10 carbon steel and clay-tempered grades that can produce a visible hamon - the differential heat treatment temper line that is the most historically significant visual feature of a Japanese blade. T10 folded clay-tempered pieces with a well-defined hamon represent the peak of the old katana quality tier. Shirasaya configurations - plain wooden scabbard and handle without conventional fittings - are also strongly represented, as the shirasaya format is the traditional Japanese housing for a valued blade during inspection and preservation. Standard full-fitted katana in classic black and natural wood finishes complete the range.