T10 Steel Katana with Clay Tempered Blade and Bronze Chrysanthemum Tsuba - Black Koshirae

The blade is forged from T10 carbon steel and clay tempered to a hardness of HRC 60, a process that creates the characteristic hamon line running along the edge. The nagasa measures 20.5 inches and carries a bright chrome-polished finish that highlights the contrast between the hardened edge and the softer spine. For collectors interested in similar high-carbon options, the Chocolate T10 Carbon Steel Katana collection offers additional T10 variations worth comparing.

The tsuka is 10.2 inches long, wrapped in black cotton ito over genuine white same (rayskin), creating the traditional diamond pattern visible along the grip. The wrap is firm and even, with the white rayskin nodes providing texture contrast beneath the dark cord.

The bronze alloy tsuba is cast in a chrysanthemum relief design - layered floral motifs radiating outward from a central medallion. The warm bronze tone sits naturally between the black ito and the polished blade, giving the fittings a cohesive traditional character without heavy ornamentation.

The saya is shaped from hardwood and finished in black piano lacquer, giving it a deep, gloss surface that mirrors the overall black koshirae theme. A black sageo is included and tied at the kurikata, and the koiguchi is fitted with real horn for a clean, secure draw. The saya measures 30.3 inches in length.

Assembled in full koshirae style, this katana measures 40.5 inches overall and weighs 2.65 lbs. It is a fully hand-finished piece with a sharpened edge, making it a strong choice for those building a serious Japanese sword collection. Explore the Blade Polished Katana collection for additional polished-finish options.