{"product_id":"katana-yasumasa-t10-clay-tempered-blade-with-choji-hamon-ksa-jiang","title":"Katana Yasumasa T10 Clay Tempered Blade with Choji Hamon | KSA Jiang","description":"\u003ch2\u003eKSA “Jiang” Series Katana – Yasumasa | Hand-Forged T10 High Carbon Blade | Clay Tempered with Real Hamon | Full Tang | Sashikomi Polish | Hand-Fitted Fittings | Genuine Rayskin | Authentic Kissaki Geometry | Green Ishime Saya | Tight-Fitted Tsuka Core | Martial Arts Practice\u003c\/h2\u003e\n\u003cp\u003eYasumasa is named in honour of Sakakibara Yasumasa (榊原康政, 1548–1606), one of the celebrated Four Heavenly Kings of Tokugawa. A trusted retainer of Tokugawa Ieyasu, Yasumasa distinguished himself through military service and became known for his loyalty, discipline, and battlefield ability. This katana bears his name as a tribute to his steadfast character, martial strength, and dedication to his lord.\u003c\/p\u003e\n\u003cp\u003eThe blade is hand-forged from T10 high-carbon steel and traditionally clay tempered to produce a genuine Choji Hamon through differential hardening. Finished with Sashikomi polish, the blade presents a refined traditional appearance while allowing the natural hamon to remain clearly visible. Its full-tang construction and authentic kissaki geometry provide both structural reliability and a traditional Japanese sword profile.\u003c\/p\u003e\n\u003cp\u003eThe koshirae features a brass Maru-gata tsuba with a layered lotus petal motif, paired with darkened cupronickel Kyō Ajiro fuchi-kashira. The tsuka is tightly wrapped in blue cotton ito over genuine black samegawa, creating a deep and distinctive contrast while providing a secure and comfortable grip.\u003c\/p\u003e\n\u003cp\u003eA Green Ishime saya adds depth and texture to the mounting, while the matching blue sageo brings visual continuity to the tsuka. The combination of green, blue, black, and warm brass gives Yasumasa a composed and dignified appearance that reflects the disciplined character of its namesake.\u003c\/p\u003e\n\u003cp\u003eSwords holder or stand sold separately.\u003c\/p\u003e\n\u003ch3\u003eSword Information\u003c\/h3\u003e\n\u003ctable width=\"579\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd style=\"width: 232.862px;\" width=\"242\" class=\"xl66\" height=\"20\"\u003eFeatures\u003c\/td\u003e\n\u003ctd style=\"width: 324.451px;\" width=\"337\" class=\"xl65\"\u003eHand-forged Maru (mono-steel), Polished Edge, Genuine rayskin, Authentic Kissaki Structure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd style=\"width: 232.862px;\" class=\"xl66\" height=\"20\"\u003eOverall Length\u003c\/td\u003e\n\u003ctd style=\"width: 324.451px;\" width=\"337\" class=\"xl65\"\u003eApprox. 101 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd style=\"width: 232.862px;\" class=\"xl66\" height=\"20\"\u003eBlade Length (Nagasa)\u003c\/td\u003e\n\u003ctd style=\"width: 324.451px;\" width=\"337\" class=\"xl65\"\u003eApprox. 71 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd style=\"width: 232.862px;\" class=\"xl66\" height=\"20\"\u003eHandle Length\u003c\/td\u003e\n\u003ctd style=\"width: 324.451px;\" width=\"337\" class=\"xl65\"\u003eApprox. 25 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd style=\"width: 232.862px;\" class=\"xl66\" height=\"20\"\u003eBlade Width at Habaki\u003c\/td\u003e\n\u003ctd style=\"width: 324.451px;\" width=\"337\" class=\"xl65\"\u003e3.2 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd style=\"width: 232.862px;\" class=\"xl66\" height=\"20\"\u003eBlade Thickness\u003c\/td\u003e\n\u003ctd style=\"width: 324.451px;\" width=\"337\" class=\"xl65\"\u003e7 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd style=\"width: 232.862px;\" class=\"xl66\" height=\"20\"\u003eBlade Material\u003c\/td\u003e\n\u003ctd style=\"width: 324.451px;\" width=\"337\" class=\"xl65\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eT10 High Carbon \u003c\/span\u003eSteel (Performance Grade)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd style=\"width: 232.862px;\" class=\"xl66\" height=\"20\"\u003eHeat Treatment\u003c\/td\u003e\n\u003ctd style=\"width: 324.451px;\" width=\"337\" class=\"xl65\"\u003e\u003cspan\u003eClay-Tempered\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd style=\"width: 232.862px;\" class=\"xl66\" height=\"20\"\u003eBlade Shape\u003c\/td\u003e\n\u003ctd style=\"width: 324.451px;\" width=\"337\" class=\"xl65\"\u003eCurved, single-edged blade\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 232.862px;\"\u003eHi (Groove)  \u003c\/td\u003e\n\u003ctd style=\"width: 324.451px;\"\u003e\u003cspan\u003eNo groove\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd style=\"width: 232.862px;\" class=\"xl66\" height=\"20\"\u003eSharpness\u003c\/td\u003e\n\u003ctd style=\"width: 324.451px;\" width=\"337\" class=\"xl65\"\u003eFully sharpened\u003cspan\u003e \u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd style=\"width: 232.862px;\" class=\"xl66\" height=\"20\"\u003eTang\u003c\/td\u003e\n\u003ctd style=\"width: 324.451px;\" width=\"337\" class=\"xl65\"\u003eFull Tang\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd style=\"width: 232.862px;\" class=\"xl66\" height=\"20\"\u003eTsuka (Handle)\u003c\/td\u003e\n\u003ctd style=\"width: 324.451px;\" width=\"337\" class=\"xl65\"\u003eHardwood, genuine rayskin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd style=\"width: 232.862px;\" class=\"xl66\" height=\"20\"\u003eSaya (Scabbard)\u003c\/td\u003e\n\u003ctd style=\"width: 324.451px;\" width=\"337\" class=\"xl65\"\u003eHardwood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd style=\"width: 232.862px;\" class=\"xl66\" height=\"20\"\u003eFittings\u003c\/td\u003e\n\u003ctd style=\"width: 324.451px;\" width=\"337\" class=\"xl65\"\u003eIron \u0026amp; Copper Fittings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 232.862px;\"\u003eTsuka-Ito  \u003c\/td\u003e\n\u003ctd style=\"width: 324.451px;\"\u003eCotton\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 232.862px;\"\u003eSageo\u003c\/td\u003e\n\u003ctd style=\"width: 324.451px;\"\u003eRayon \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 232.862px;\"\u003eWeight (without saya)\u003c\/td\u003e\n\u003ctd style=\"width: 324.451px;\"\u003eApprox. 950 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"60\"\u003e\n\u003ctd style=\"width: 232.862px;\" class=\"xl66\" height=\"60\"\u003ePurpose\u003c\/td\u003e\n\u003ctd style=\"width: 324.451px;\" width=\"337\" class=\"xl65\"\u003e\n\u003cp\u003e\u003cspan\u003eSuitable for test cutting (Tameshigiri) and general martial arts training. We can provide an unsharpened blade upon request\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0525\/5587\/4475\/files\/IMG_7136.jpg?v=1766810992\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0525\/5587\/4475\/files\/200_JGG069-2.jpg?v=1789805674\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0525\/5587\/4475\/files\/Saya_core.jpg?v=1782820794\" alt=\"\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0525\/5587\/4475\/files\/IMG_7135.jpg?v=1766810990\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0525\/5587\/4475\/files\/IMG_7127.jpg?v=1766810990\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0525\/5587\/4475\/files\/IMG_7156.jpg?v=1766810990\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0525\/5587\/4475\/files\/IMG_7149.jpg?v=1766810990\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0525\/5587\/4475\/files\/IMG_7151.jpg?v=1766810990\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0525\/5587\/4475\/files\/IMG_7152.jpg?v=1766810990\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0525\/5587\/4475\/files\/IMG_7150.jpg?v=1766810989\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0525\/5587\/4475\/files\/IMG_7133.jpg?v=1766811346\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0525\/5587\/4475\/files\/IMG_7148.jpg?v=1766810990\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0525\/5587\/4475\/files\/IMG_7138.jpg?v=1766810990\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0525\/5587\/4475\/files\/IMG_7144.jpg?v=1766810990\"\u003e\u003c\/p\u003e","brand":"KSA","offers":[{"title":"Default Title","offer_id":47897260884139,"sku":"PERJGG069KSA200","price":549.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0525\/5587\/4475\/files\/200JGG069.png?v=1789805475","url":"https:\/\/www.katanaswordart.com.au\/products\/katana-yasumasa-t10-clay-tempered-blade-with-choji-hamon-ksa-jiang","provider":"KatanaSwordArt","version":"1.0","type":"link"}