{"product_id":"fireforge-bunka-knife-210mm-tricolour-multimetal-aurelia","title":"Bunka Knife 210 mm — Laminated Multimetal Construction | Aurelia Series","description":"\u003cp data-start=\"124\" data-end=\"389\"\u003eThis 210 mm Bunka knife is configured for precision-oriented preparation, combining a flat cutting edge with an angular tip profile. Within the Aurelia Series, performance is defined by laminated multimetal construction rather than high-hardness steel optimisation.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1vhiqvg\" data-start=\"396\" data-end=\"425\"\u003eEngineering and Materials\u003c\/h3\u003e\n\u003cp data-start=\"427\" data-end=\"626\"\u003eThe blade is built around a 12Cr18MoV stainless steel core, heat treated to 58–60 HRC. This composition delivers high corrosion resistance, structural stability, and predictable sharpening behaviour.\u003c\/p\u003e\n\u003cp data-start=\"628\" data-end=\"872\"\u003eAt this hardness level, edge retention is moderate—above entry-level stainless steels but below high-hardness or powder metallurgy steels. In exchange, the blade offers improved toughness and lower risk of edge instability under controlled use.\u003c\/p\u003e\n\u003cp data-start=\"874\" data-end=\"1161\"\u003eThe 37-layer laminate combines 316L stainless steel with copper and brass. These outer layers are structurally bonded and act as protective cladding rather than contributing to edge performance. Copper and brass elements are reactive and will develop surface oxidation if not maintained.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1qnzxi5\" data-start=\"1168\" data-end=\"1190\"\u003eBlade Architecture\u003c\/h3\u003e\n\u003cp data-start=\"1192\" data-end=\"1359\"\u003eWith a blade thickness of approximately 2.1 mm and a height of 52 mm, the geometry is optimised for low resistance in push cutting while maintaining lateral stability.\u003c\/p\u003e\n\u003cp data-start=\"1361\" data-end=\"1581\"\u003eThe Bunka profile introduces a forward-angled (reverse tanto) tip, enabling precise tip engagement for detail work. The relatively flat edge profile supports efficient vegetable processing and controlled slicing motions.\u003c\/p\u003e\n\u003cp data-start=\"1583\" data-end=\"1706\"\u003eEdge geometry at 13–15° per side balances cutting efficiency with edge durability, without pushing toward extreme thinness.\u003c\/p\u003e\n\u003ch3 data-section-id=\"bs6y6o\" data-start=\"1713\" data-end=\"1737\"\u003eFunctional Behaviour\u003c\/h3\u003e\n\u003cp data-start=\"1739\" data-end=\"1929\"\u003eCutting resistance is low in straight push cuts due to flat profile and thin grind. The tip provides controlled penetration for fine work but is structurally less tolerant to lateral stress.\u003c\/p\u003e\n\u003cp data-start=\"1931\" data-end=\"2034\"\u003eEdge stability is consistent for vegetables and boneless proteins but not suited for impact or torsion.\u003c\/p\u003e\n\u003cp data-start=\"2036\" data-end=\"2157\"\u003eCorrosion resistance is high at the core; however, exposed copper and brass require drying after use to manage oxidation.\u003c\/p\u003e\n\u003cp data-start=\"2159\" data-end=\"2243\"\u003eSharpening is straightforward, with faster feedback compared to high-carbide steels.\u003c\/p\u003e\n\u003ch3 data-section-id=\"14z7251\" data-start=\"2250\" data-end=\"2272\"\u003eHandle Engineering\u003c\/h3\u003e\n\u003cp data-start=\"2274\" data-end=\"2407\"\u003eThe octagonal wa-style handle in figured sycamore with padauk burl accents provides neutral indexing and consistent grip orientation.\u003c\/p\u003e\n\u003cp data-start=\"2409\" data-end=\"2597\"\u003eLow handle mass positions balance near the blade–handle junction, improving control during forward and downward cutting motions. Wood construction requires controlled exposure to moisture.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1vb2tjh\" data-start=\"2604\" data-end=\"2629\"\u003eManufacturing Process\u003c\/h3\u003e\n\u003cp data-start=\"2631\" data-end=\"2779\"\u003eThe blade is produced through a forge-bonded multimetal lamination process, integrating stainless steel, copper, and brass into a unified structure.\u003c\/p\u003e\n\u003cp data-start=\"2781\" data-end=\"2998\"\u003eHeat treatment is applied to the core to maintain a balance between hardness and toughness. The complexity of bonding dissimilar metals prioritises structural integrity and consistency over extreme performance tuning.\u003c\/p\u003e\n\u003ch3 data-section-id=\"zzdsyy\" data-start=\"3005\" data-end=\"3023\"\u003eFunctional Use\u003c\/h3\u003e\n\u003cp data-start=\"3025\" data-end=\"3042\"\u003e\u003cstrong data-start=\"3025\" data-end=\"3042\"\u003eDesigned for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"3043\" data-end=\"3150\"\u003e\n\u003cli data-section-id=\"1j22mbs\" data-start=\"3043\" data-end=\"3078\"\u003ePrecision vegetable preparation\u003c\/li\u003e\n\u003cli data-section-id=\"14aipef\" data-start=\"3079\" data-end=\"3116\"\u003eFine slicing of boneless proteins\u003c\/li\u003e\n\u003cli data-section-id=\"1aqasae\" data-start=\"3117\" data-end=\"3150\"\u003eDetail-oriented cutting tasks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3152\" data-end=\"3173\"\u003e\u003cstrong data-start=\"3152\" data-end=\"3173\"\u003eNot designed for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"3174\" data-end=\"3235\"\u003e\n\u003cli data-section-id=\"vff2yg\" data-start=\"3174\" data-end=\"3190\"\u003eBone cutting\u003c\/li\u003e\n\u003cli data-section-id=\"axa54w\" data-start=\"3191\" data-end=\"3206\"\u003eFrozen food\u003c\/li\u003e\n\u003cli data-section-id=\"1tf10u5\" data-start=\"3207\" data-end=\"3235\"\u003eLateral stress or prying\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eKnife Type\u003c\/td\u003e\n\u003ctd\u003eBunka Knife\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlade Length\u003c\/td\u003e\n\u003ctd\u003e210 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e364 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlade Thickness\u003c\/td\u003e\n\u003ctd\u003e~2.1 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlade Height\u003c\/td\u003e\n\u003ctd\u003e52 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e157 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCore Steel\u003c\/td\u003e\n\u003ctd\u003e12Cr18MoV Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003e37-layer multimetal lamination\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Materials\u003c\/td\u003e\n\u003ctd\u003eCopper · Brass · 316L Stainless\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003e58–60 HRC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEdge Angle\u003c\/td\u003e\n\u003ctd\u003e13–15° per side\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTip Angle\u003c\/td\u003e\n\u003ctd\u003e~65°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrind\u003c\/td\u003e\n\u003ctd\u003eDouble Bevel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHandle\u003c\/td\u003e\n\u003ctd\u003eOctagonal Wa-style\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHandle Materials\u003c\/td\u003e\n\u003ctd\u003eFigured Sycamore · Padauk Burl\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBalance\u003c\/td\u003e\n\u003ctd\u003eBlade–handle transition\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eCertification\u003c\/th\u003e\n\u003cth\u003eScope\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCE\u003c\/td\u003e\n\u003ctd\u003eConformity with EU consumer product safety requirements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLFGB\u003c\/td\u003e\n\u003ctd\u003eCompliance for food-contact materials\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSGS\u003c\/td\u003e\n\u003ctd\u003eIndependent verification of material composition and safety\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"FireForge Knives","offers":[{"title":"Knife + Wood Box","offer_id":52946283004233,"sku":"200007763:201336100","price":285.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0968\/2980\/0777\/files\/Max_1200_X_1200_-_2025-11-06T225702.556.jpg?v=1762480684","url":"https:\/\/fireforgeknives.com\/products\/fireforge-bunka-knife-210mm-tricolour-multimetal-aurelia","provider":"FireForge Knives ","version":"1.0","type":"link"}