Yaksha (炎) – Hand Forged T10 Tool Steel Katana Sword

Yaksha (炎) – Hand Forged T10 Tool Steel Katana Sword

The Yaksha (炎) katana earns its fierce name — “Night Demon Flame” — through a blade of T10 High Speed Tool Steel finished in a striking烤紫 (roasted violet) heat-color patina that glows like embers at the edge. This Shinogi-Zukuri ridgeline katana balances aggressive cutting geometry with a mid-range price that makes serious T10 steel accessible to dedicated practitioners. At 72 cm of blade and paired with a rare green Aohada bark wood saya, the Yaksha is one of the most visually arresting T10 katanas available under $200.

Specifications

Craftsmanship & Materials

T10 tool steel stands apart from standard high-carbon steels by virtue of its tungsten content, which increases hardness and wear resistance without sacrificing the toughness a functional katana demands. The Yaksha’s blade undergoes an oil quench and temper process that locks in a fine, stable grain structure — delivering an edge that holds under repeated cutting while remaining less brittle than water-quenched alternatives. The 烤紫 surface treatment is not mere cosmetics: this controlled oxidation process creates a violet-to-amber gradient along the spine and flat that recalls the color of a flame’s inner cone, making every Yaksha blade uniquely individual.

The Shinogi-Zukuri profile — the classical ridgeline geometry used by Japanese swordsmiths for centuries — gives the Yaksha exceptional cross-sectional rigidity. The raised shinogi line divides the flat ji from the sloping shinogi-ji, channeling cutting force efficiently and reducing flex on impact. At 3.2 cm wide and 0.7 cm thick at the spine, the geometry is neither too blade-heavy nor too slender, sitting comfortably in the hands of both martial artists and collectors building their first serious piece.

The saya is crafted from Aohada (green bark wood), a material prized in Longquan workshops for its tight grain and natural moisture resistance. Its deep forest-green tone creates a dramatic visual contrast against the violet-flamed blade when drawn, a pairing that feels intentional and theatrical in equal measure. The cotton ito wrap on the tsuka provides a secure, tactile grip that only improves with use as the fibers seat themselves to the hand.

Perfect For

• First serious T10 purchase: Collectors stepping up from entry-level 1045 or 1060 steel who want genuine T10 performance and visual character without crossing the $200 threshold.
• Tameshigiri practice: The oil-quenched T10 edge and classical Shinogi-Zukuri geometry make the Yaksha well-suited to cutting practice on tatami mats and rolled targets.
• Display with edge: The烤紫 flame patina and Aohada saya make this a conversation-starting display piece that also happens to be fully functional.

Care & Maintenance

T10 tool steel, while highly wear-resistant, contains no chromium and will develop surface rust if left unprotected — wipe the blade dry after any handling and apply a light coat of choji oil or mineral oil every two to four weeks. The 烤紫 patina is a protective oxide layer; avoid abrasive polishing that would strip it away and instead clean with a soft cloth only. Store the Yaksha horizontally in its Aohada saya in a low-humidity environment to protect both the blade and the wood’s natural finish.