{"product_id":"tamahagane-choji-katana","title":"Tamahagane Choji Katana with Real Hamon | Full Tang 18-Stage Polished Black Urushi Scabbard 102cm","description":"\u003cp\u003eThe \u003cstrong\u003eTamahagane Choji Katana\u003c\/strong\u003e is a master-tier Japanese collector sword forged from proprietary hearth-smelted forged Tamahagane steel (玉钢), displaying an intricate Ko-Itame wood-grain hada. Differentially clay-tempered to create a genuine Ko-Gunome Choji-Midare Hamon (59–60 HRC), this extraordinary blade is treated with 18 progressive stages of traditional Japanese waterstone hand polishing (Shangyan \/ Joutetsu). Fitted with opulent silver-gilt brass koshirae featuring detailed warrior reliefs and housed in a natural black Urushi lacquered Honoki wood scabbard with genuine polished white ray skin inlay, this sword represents the peak of authentic traditional craftsmanship.\u003c\/p\u003e\u003cdiv style=\"background-color: #111; color: #d4af37; padding: 16px 20px; border-radius: 6px; margin: 20px 0; border: 1px solid #333;\"\u003e\n\u003cp style=\"margin: 0; font-weight: bold; letter-spacing: 1px; font-size: 14px; text-transform: uppercase;\"\u003eMASTER SMITH SERIES • FORGED TAMAHAGANE • 18-STAGE HAND POLISHED\u003c\/p\u003e\n\u003cp style=\"margin: 4px 0 0; color: #fff; font-size: 13px;\"\u003eClay-tempered hearth-smelted Tamahagane steel with Ko-Gunome Choji Hamon (59–60 HRC), 18-stage hand polish, silver-gilt brass mounts, pure silk tsuka, and black Urushi ray skin scabbard.\u003c\/p\u003e\n\u003c\/div\u003e\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eElite Japanese Sword Collectors:\u003c\/strong\u003e Connoisseurs demanding authentic hearth-smelted Tamahagane steel, tight Ko-Itame grain (hada), and an 18-stage master waterstone hand polish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArt \u0026amp; Heritage Enthusiasts:\u003c\/strong\u003e Admirers of traditional Japanese decorative arts, featuring silver-gilt brass mounts, warrior engravings, and authentic black Urushi lacquer with ray skin.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMartial Arts Masters:\u003c\/strong\u003e Practitioners seeking a perfectly balanced Shinogi-zukuri blade with Koshi-zori curvature (1.85cm) and an extended Chu-kissaki tip for superior handling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-End Gift Seekers:\u003c\/strong\u003e An exquisite gift for martial arts masters, executives, and collectors celebrating major milestones.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey Highlights\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHearth-Smelted Forged Tamahagane:\u003c\/strong\u003e Masterfully smelted and hand-forged Tamahagane steel exhibiting a delicate, tightly packed Ko-Itame grain pattern.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClay-Tempered Ko-Gunome Choji Hamon:\u003c\/strong\u003e Differentially heat-treated blade producing an intricate clove-blossom temper line with 59–60 HRC edge hardness and Midare Komaru-kaeri boshi.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e18-Stage Master Hand Polish:\u003c\/strong\u003e Painstaking traditional stone polishing (Shangyan \/ Joutetsu) revealing crystal clarity, crisp shinogi ridges, and rich nie activity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSilver-Gilt Brass Koshirae:\u003c\/strong\u003e Solid brass tsuba, fuchi, kashira, and habaki electroplated in lustrous silver with finely sculpted warrior relief.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlack Urushi \u0026amp; Polished Ray Skin Saya:\u003c\/strong\u003e Seasoned Honoki magnolia wood coated in deep natural black Urushi lacquer with an authentic polished white samegawa inlay near the collar.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePure Silk Ryugo Tsuka:\u003c\/strong\u003e Waisted hourglass-profile handle wrapped in genuine black silk cord over authentic white ray skin, secured by a single bamboo mekugi peg.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eProprietary Hearth-Smelted Tamahagane Steel\u003c\/strong\u003e\u003cbr\u003eHand-smelted using traditional bloomery furnace methods from iron sand, then folded and refined to remove impurities while preserving the natural organic Ko-Itame hada that defines true Tamahagane swords.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eClay Differential Heat Treatment\u003c\/strong\u003e\u003cbr\u003eCoated with traditional clay paste prior to quenching to create a hard 59–60 HRC martensite cutting edge while keeping the spine flexible (~45 HRC) to absorb heavy impacts without fracture.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e18-Stage Traditional Japanese Stone Polish\u003c\/strong\u003e\u003cbr\u003eHoned across eighteen sequential stages of Japanese natural waterstones by master sharpeners, bringing out optical contrast between the misty hamon, mirror-crisp kissaki, and steel surface.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSilver-Gilt Brass Mounts \u0026amp; Urushi Saya\u003c\/strong\u003e\u003cbr\u003eAdorned with opulent silver-plated brass fittings depicting traditional warrior legends, paired with a lustrous black Urushi scabbard embellished with genuine polished ray skin.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable style=\"width: 100%; border-collapse: collapse; margin-top: 10px;\"\u003e\u003ctbody\u003e\n\u003ctr style=\"border-bottom: 1px solid #ddd;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-weight: bold; width: 35%;\"\u003eOverall Length\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px;\"\u003e102 cm \/ 40.16 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #ddd;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-weight: bold;\"\u003eBlade Length (Nagasa)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px;\"\u003e71 cm \/ 27.95 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #ddd;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-weight: bold;\"\u003eHandle Length (Tsuka)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px;\"\u003e26 cm \/ 10.24 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #ddd;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-weight: bold;\"\u003eCurvature (Sori)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px;\"\u003e1.85 cm \/ 0.73 inches (Koshi-zori)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #ddd;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-weight: bold;\"\u003eMotohaba (Base Width)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px;\"\u003e3.2 cm \/ 1.26 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #ddd;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-weight: bold;\"\u003eSakihaba (Tip Width)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px;\"\u003e2.3 cm \/ 0.91 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #ddd;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-weight: bold;\"\u003eMotokasane (Base Thickness)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px;\"\u003e0.72 cm \/ 0.28 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #ddd;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-weight: bold;\"\u003eSakikasane (Tip Thickness)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px;\"\u003e0.45 cm \/ 0.18 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #ddd;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-weight: bold;\"\u003eBlade Shape (Sugata)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px;\"\u003eShinogi-zukuri, Iori-mune, Extended Chu-kissaki\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #ddd;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-weight: bold;\"\u003eBlade Steel\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px;\"\u003eProprietary Hearth-Smelted Forged Tamahagane (玉钢)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #ddd;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-weight: bold;\"\u003eGrain Structure (Hada)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px;\"\u003eFine Ko-Itame Hada (小板目肌)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #ddd;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-weight: bold;\"\u003eHeat Treatment\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px;\"\u003eTraditional Clay Tempered Differential Quenching\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #ddd;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-weight: bold;\"\u003eHamon Pattern\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px;\"\u003eAuthentic Ko-Gunome Choji-Midare with Nie Crystals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #ddd;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-weight: bold;\"\u003eBoshi\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px;\"\u003eMidare into Komaru-kaeri\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #ddd;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-weight: bold;\"\u003eBlade Finish\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px;\"\u003e18-Stage Traditional Japanese Hand Stone Polishing (Shangyan \/ Joutetsu)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #ddd;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-weight: bold;\"\u003eEdge Hardness\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px;\"\u003e59–60 HRC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #ddd;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-weight: bold;\"\u003eConstruction\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px;\"\u003eFull Tang, Disassemblable (1 Mekugi Peg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #ddd;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-weight: bold;\"\u003eFittings (Koshirae)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px;\"\u003eSolid Brass Electroplated in Silver Gilt (Tsuba, Fuchi, Kashira, Habaki)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #ddd;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-weight: bold;\"\u003eHandle Wrap (Tsuka-ito)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px;\"\u003ePure Natural Black Silk over Genuine Ray Skin (Ryugo Shape)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #ddd;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-weight: bold;\"\u003eScabbard (Saya)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px;\"\u003eHonoki Magnolia Wood with Black Urushi Lacquer \u0026amp; Polished Ray Skin Inlay\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #ddd;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-weight: bold;\"\u003eTotal Weight\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px;\"\u003e1,300 g \/ 2.87 lbs (with saya)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #ddd;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-weight: bold;\"\u003eNet Weight\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px;\"\u003e1,100 g \/ 2.43 lbs (blade only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1 × Tamahagane Choji Katana\u003c\/li\u003e\n\u003cli\u003e1 × Black Urushi Ray Skin Honoki Scabbard\u003c\/li\u003e\n\u003cli\u003e1 × Premium Display Sword Stand\u003c\/li\u003e\n\u003cli\u003e1 × Traditional Silk Sword Bag\u003c\/li\u003e\n\u003cli\u003e1 × Luxury Gift Presentation Box\u003c\/li\u003e\n\u003cli\u003e1 × Sword Care Kit (Sword Oil \u0026amp; Cleaning Cloth)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eMaintenance \u0026amp; Care\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeep Dry:\u003c\/strong\u003e Always wipe the blade clean with a soft dry microfiber cloth immediately after handling. Never touch carbon steel with bare skin.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePeriodic Oiling:\u003c\/strong\u003e Apply a light protective layer of choji mineral oil every 30 to 60 days to prevent atmospheric oxidation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProper Storage:\u003c\/strong\u003e Store horizontally in its scabbard in a dry, room-temperature environment away from excess humidity.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIs the Hamon real?\u003c\/strong\u003e\u003cbr\u003eYes, the Hamon is 100% authentic, formed through traditional clay tempering and differential quenching, not cosmetic acid etching.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is 18-stage hand polishing?\u003c\/strong\u003e\u003cbr\u003eThe blade undergoes eighteen progressive stone polishing stages (Shangyan \/ Joutetsu) using traditional Japanese waterstones to reveal the subtle crystal structures, hamon activity, and flawless blade lines.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the sword be disassembled?\u003c\/strong\u003e\u003cbr\u003eYes. Built in traditional full-tang construction, the tsuka is secured with a removable bamboo mekugi peg for thorough inspection and maintenance.\u003c\/p\u003e\u003ch3\u003eShipping Information\u003c\/h3\u003e\u003cp\u003eOrders are dispatched from our US domestic warehouse within 1–2 business days. Standard delivery across the United States takes 5–8 business days with continuous carrier tracking.\u003c\/p\u003e\u003ch3\u003eWarranty \u0026amp; Support\u003c\/h3\u003e\u003cp\u003eBacked by our 30-day craftsmanship warranty covering material and workmanship defects upon delivery. Contact our dedicated support team for prompt assistance.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eImportant Product Information\u003c\/h3\u003e\u003cp\u003e\u003cem\u003eDue to the handmade nature of traditional swordsmithing, slight variations in grain texture, dimensions, and weight may occur. This sword is sharp and intended strictly for adults aged 18 and older. Buyers are responsible for adhering to local laws and regulations.\u003c\/em\u003e\u003c\/p\u003e","brand":"Samurai Swordman","offers":[{"title":"Default Title","offer_id":67587021045910,"sku":"ZJX3600","price":1199.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0671\/7800\/4630\/files\/3_13069317-044e-4515-8615-eb3f60294a6c.jpg?v=1792012900","url":"https:\/\/samuraiswordman.com\/products\/tamahagane-choji-katana","provider":"samuraiswordman","version":"1.0","type":"link"}