Ryujin 65mn Spring Steel Differentially Hardened

Ryujin 65mn Spring Steel Differentially Hardened "Kengo" Katana

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65mn Spring steel, differentially hardened to produce a complex REAL hamon temper line. Slightly longer than usual (11.5") handle for extra leverage, extra sori for easier cutting and decked out with Ryuin's best components. Limited stock available - now on final closeout sale and exclusive to the SBG members section.

$269.99 $399.99 You Save $130.00
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65MN Spring Steel is not in itself all that expensive. It is an excellent relatively inexpensive and common steel, with the MN standing for Manganese - which aids grain structure, and contributes to hardenability, strength & wear resistance. Improves the steel (e.g., deoxidizes) during the steel's manufacturing (hot working and rolling). And for some reason, when given a propriety hand clay treatment by Ryujin, the blade turns out with a very active and prominent natural hamon!

Better still, it has a similar carbon content to 1060 and 1075 carbon steel, creating a surprisingly durable yet traditional style blade (this steel is most commonly used to make AK47 bayonets and truck springs).

Similar swords that have recent come out on the market made from 65MN Spring Steel tend to be priced between $390 to $600 depending on the fittings. In the case of the Kengo, we use the best Ryujin has to offer, with solid brass Fuchigashira, copper seppa and habaki and black iron tsuba with real gold painted hunting tiger theme.

While cosmetically the blade is extremely attractive, it has extra curvature than a normal blade. Combined with the bo-hi and this blade, which is optimized for the height and arm length of the average American, feels very comfortable one handed or two - bit is of course designed for two handed usage.


Quality wise, it is closer in quality to the Custom Katana Elite than the standard Ryujin T10 Katana, but price wise closer to the standard model. As such, and with limited stock, these are expected to sell out fast. These prices are unsustainable, you can find other listings for the exact same model for $375 and $400 - so to say $324.99 is a bargain is an understatement!

How to Use

Suitable for backyard cutting or the dojo.
Overall length: 28" blade, Handle: 11.5"

Materials and Construction

65MN Spring Steel, Clayed and Differentially Hardened Hand Forged and Factory Sharpened Blade. Copper Habaki and Seppa. Brass Fuchigashira set. Glossy black lacquered wooden saya and black sageo.
Shipped from the Ryujin workshop in Los Angeles within 2 business days. $20 flat rate USA shipping for up to 2 swords, FREE shipping if 3 or more swords ordered at the same time. International shipping via USPS, $60 to selected international destinations by USPS. Click here for more shipping information

Warranty Info

Each sword is guaranteed to be as described and 100% genuine product. Each sword is also covered by in full by the Manufacturers Warranty PLUS our extended LIFETIME Warranty against blade breakage. Click here for detailed warranty information

Return Policy

Satisfaction Guaranteed. We proudly stand behind every product we sell. If you are not pleased with your purchase you can return it to us within 30 days of purchase in original, unused condition for a full refund minus shipping and 10% restock fee. Click here for more info on our guarantees