Katana – T10 Steel Full Tempered Hitatsura Hamon Blade | Onikiri Premium Edition

【Overview】

This katana is a premium Onikiri model featuring a rare full tempered Hitatsura hamon, forged from high-hardness T10 steel.

Full tempering is one of the most demanding traditional techniques, achievable only by highly skilled craftsmen, resulting in an exceptionally powerful and collectible blade.

【Blade & Craftsmanship】

The blade is hand-forged from T10 high carbon steel and finished using a full tempering (Hitatsura) clay tempering technique.

Unlike standard differential hardening, this method hardens nearly the entire blade, creating a dramatic, irregular hamon pattern and delivering extreme hardness and cutting power.

Each blade is completed through meticulous hand forging, heat treatment, and precision polishing following traditional Longquan methods.

【Design & Mountings】

The tsuba is crafted from solid copper and finished with a gilded Seven-Star engraving, symbolizing strength and fortune.

The seppa are made from shakudo-style copper alloy, enhancing both durability and refined visual contrast.

【Handle & Saya】

The saya is constructed from ultra-dense ipe hardwood and partially wrapped with genuine stingray skin, reinforcing durability and visual impact.

A thick, high-quality sageo adds balance, presence, and a premium finish.

【Performance】

With an approximate hardness of 62 HRC, this katana delivers outstanding cutting power.

It cleanly slices stacked plastic bottles while maintaining excellent edge retention, reflecting the true performance potential of a fully tempered blade.

【Specifications】

Overall length: 103 cm (40.6 in)

Blade length: 72 cm (28.3 in)

Handle length: 26 cm (10.2 in)

Blade width: 3.2 cm (1.26 in)

Blade thickness: 0.7 cm (0.28 in)

Total weight: 1.2 kg (2.65 lb)

Net weight: 0.9 kg (1.98 lb)

【Usage & Gift】

Ideal for high-end collections, advanced martial arts practice, test cutting, premium gifts, housewarming presents, and dignified interior display.

A rare katana suited for enthusiasts who value both extreme craftsmanship and historical technique.