Kengen means authority — the quiet weight of a sword that commands a room before it is ever drawn. This katana earns the name through its construction rather than ornament alone: a three-layer San-Mai blade that pairs a hard, keen exterior with a tough, forgiving core.
Forging & Steel
The blade uses San-Mai (three-layer) construction — a refined T10 steel core jacketed in Damascus on the outside. The result is the smith’s old compromise solved: a rigid, sharp exterior that holds an edge, wrapped around a flexible spine that absorbs shock so the blade resists breaking under stress. It is cross-ground and entirely hand-polished, the surface worked until the layered hamon and folded grain read clearly along the length. The blade runs full-tang through the handle.
San-Mai is the answer Japanese smiths reached for long before modern metallurgy named the problem: a single homogeneous bar is forced to choose between hardness and toughness, but a laminated blade need not. Here the hard Damascus jacket carries the cutting edge while the resilient T10 core takes the shock of a heavy cut, so the Kengen stays keen without the brittleness that snaps a mono-steel blade. At 104 cm overall it is balanced for committed tameshigiri, the deep-green mounting and gilded fittings marking it out as a master-grade sword meant to be used, not shelved.
Fittings
The mounting is a study in contrast. The tsuba is pure copper set with gilded-silver inlays, and the matching kashira echoes it. The saya is solid wood finished in a deep-green shagreen-style lacquer, and the tsuka is wrapped in genuine stingray (shagreen) leather for grip and presence.
Specifications
| Blade steel | San-Mai: refined T10 core, Damascus jacket, cross-ground, hand-polished |
|---|---|
| Blade color | Gray |
| Tsuba | Pure copper with carved gilded-silver inlay |
| Saya | Solid green wood, lacquered shagreen style |
| Tsuka | Genuine stingray (shagreen) leather |
| Tang | Full tang |
Dimensions
| Total length | 104 cm |
|---|---|
| Blade length | 71 cm |
| Blade width | 3.2 cm |
| Blade thickness | 0.7 cm |
| Handle length | 27 cm |
Is it battle-ready?
Yes. The San-Mai build is the most forgiving cutting geometry we offer — sharp where it must be, shock-tolerant where it counts. It is fully battle-ready for serious tatami cutting. Explore the full katana range, or compare it with master-tier pieces like the Katana Yūkan’na and the Katana Kujaku.
Verified owner
