{"title":"Metal Round Bar","description":"\u003cp\u003e\u003cstrong\u003eRound bar\u003c\/strong\u003e is a solid cylindrical section used for shafts, pins, axles, balustrades, studwork, brackets and machining. Rackerman supplies \u003cstrong\u003eS275 hot-rolled mild steel round bar, EN3B bright drawn round bar and 6063 aluminium round bar\u003c\/strong\u003e from 4mm to 50mm diameter, cut to length.\u003c\/p\u003e\n\u003ch2\u003eBlack vs bright round bar\u003c\/h2\u003e\n\u003cp\u003eHot-rolled (black) mild steel round bar is strong and economical for general fabrication and structural use. Bright drawn (EN3B) round bar has a smooth, accurate, clean finish ideal for machining and precision work. Aluminium round bar is light and corrosion-free.\u003c\/p\u003e\n\u003ch2\u003eCut to size \u0026amp; delivery\u003c\/h2\u003e\n\u003cp\u003eAll round bar is cut to your length with fast UK delivery.\u003c\/p\u003e","products":[{"product_id":"s275-mild-steel-round-bars","title":"S275 Grade Mild Steel Round Bars – UK Stock, 6m Lengths","description":"\u003cp\u003eDiscover durable S275 grade mild steel round bars in full 6 m lengths—designed for construction, fabrication and engineering across the UK, these round rods deliver reliable performance in a wide range of sizes from 6 mm to 40 mm diameter.\u003c\/p\u003e\n\u003cp\u003eSelect from a comprehensive range of thickness options, from 6mm to 40mm, ensuring you have the precise strength needed for your project. From structural support to intricate designs, our round bars deliver unmatched durability across every dimension.\u003c\/p\u003e\n\u003cp\u003eDesigned for construction, fabrication, and various industrial projects, these S275 grade round bars provide reliability and durability for a broad spectrum of applications.\u003c\/p\u003e\n\u003cp\u003eOur round bars showcase meticulous craftsmanship, ensuring uniform thickness and facilitating ease of use in any project.\u003c\/p\u003e\n\u003cp\u003eConstructed from S275 grade steel, our round bars are built to withstand wear and tear, promising enduring performance in diverse applications.\u003c\/p\u003e\n\u003cp\u003eEngineered for ease, these round bars are effortlessly cut, shaped, and manipulated to suit your specific needs, catering to both professionals and DIY enthusiasts.\u003c\/p\u003e\n\u003cp\u003eWith a generous length of 6 meters, these round bars offer convenience in handling and reduce the need for frequent joints, ensuring a smooth and continuous solution for your projects.\u003c\/p\u003e\n\u003cp\u003eWhether reinforcing key structural elements, constructing sturdy frameworks, or crafting intricate designs, our S275 Grade Mild Steel Round Bars empower you to unleash your creativity with confidence.\u003c\/p\u003e\n\u003cp\u003eUpgrade your projects with the strength and versatility of our S275 Grade Mild Steel Round Bars. Choose the thickness that aligns with your vision and experience the reliability that defines craftsmanship at its finest.\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What diameters are available in 6m round bar?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The full S275 range from 10mm upwards in 6m stock lengths. Check the product page for specific sizes and prices.\"}}, {\"@type\": \"Question\", \"name\": \"What is the advantage of 6m round bar?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"6m gives maximum length per bar, reducing joints on long runs and waste on larger jobs. It is the standard stock length for structural and fabrication bar in the UK.\"}}, {\"@type\": \"Question\", \"name\": \"Can 6m round bar be delivered?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Delivered within 3-5 working days to mainland UK. Ensure site access can accommodate 6m lengths — a full-size van or flatbed is typically required.\"}}, {\"@type\": \"Question\", \"name\": \"What surface finish is 6m round bar?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Hot-rolled black finish with mill scale. The surface can be cleaned with a wire brush or grinder before welding or painting.\"}}, {\"@type\": \"Question\", \"name\": \"Is S275 round bar suitable for structural use?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. S275 is a structural grade to BS EN 10025-2. It is used for fabricated steelwork, bracing, pins, hangers and any application requiring a solid round section with verified mechanical properties.\"}}]}\u003c\/script\u003e","brand":"Rackerman","offers":[{"title":"6mm","offer_id":44276508590333,"sku":null,"price":27.99,"currency_code":"GBP","in_stock":true},{"title":"8mm","offer_id":44276508885245,"sku":null,"price":29.99,"currency_code":"GBP","in_stock":true},{"title":"10mm","offer_id":44276508918013,"sku":null,"price":35.99,"currency_code":"GBP","in_stock":true},{"title":"12mm","offer_id":44276508950781,"sku":null,"price":44.99,"currency_code":"GBP","in_stock":true},{"title":"14mm","offer_id":44276508983549,"sku":null,"price":52.99,"currency_code":"GBP","in_stock":true},{"title":"16mm","offer_id":44276509016317,"sku":null,"price":57.99,"currency_code":"GBP","in_stock":true},{"title":"20mm","offer_id":44276509049085,"sku":null,"price":63.99,"currency_code":"GBP","in_stock":true},{"title":"22mm","offer_id":44276509081853,"sku":null,"price":69.99,"currency_code":"GBP","in_stock":true},{"title":"25mm","offer_id":44276509114621,"sku":null,"price":89.99,"currency_code":"GBP","in_stock":true},{"title":"30mm","offer_id":44276509147389,"sku":null,"price":134.99,"currency_code":"GBP","in_stock":true},{"title":"40mm","offer_id":44276509180157,"sku":null,"price":179.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/1710\/6429\/files\/s-l1600_76_07196aeb-f1ef-410b-910c-63d58feba185.jpg?v=1700165971"},{"product_id":"6063-aluminium-round-bar-4m","title":"6063 Aluminium Round Bar 4m - T6 Solid Bar 12mm to 50mm","description":"\u003cp\u003eBuy our 6063 T6 aluminium round bar in full 4m lengths - a strong, lightweight and highly corrosion-resistant architectural-grade solid bar ideal for fabrication, machining, framing, brackets, shafts and trims. Available in diameters from 12mm to 50mm with cut-to-size available on request and fast UK delivery.\u003c\/p\u003e\n\u003ch2\u003eSizes\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiameter (mm)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eImperial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e12mm\u003c\/td\u003e\n\u003ctd\u003e1\/2\"\u003c\/td\u003e\n\u003ctd\u003e4m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e19mm\u003c\/td\u003e\n\u003ctd\u003e3\/4\"\u003c\/td\u003e\n\u003ctd\u003e4m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e25mm\u003c\/td\u003e\n\u003ctd\u003e1\"\u003c\/td\u003e\n\u003ctd\u003e4m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e38mm\u003c\/td\u003e\n\u003ctd\u003e1.1\/2\"\u003c\/td\u003e\n\u003ctd\u003e4m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003ctd\u003e4m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eDiameters are shown in mm with the imperial equivalent. All bars are 4m lengths. Cut to size is available on request - contact us before ordering with your required lengths.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGrade 6063 T6 aluminium - excellent corrosion resistance and surface finish\u003c\/li\u003e\n\u003cli\u003eSolid round bar in full 4m lengths\u003c\/li\u003e\n\u003cli\u003eLightweight yet strong - easy to handle, transport and machine\u003c\/li\u003e\n\u003cli\u003eIdeal for turning, drilling, welding and machining\u003c\/li\u003e\n\u003cli\u003eSuitable for indoor and outdoor use, including architectural, marine and transport applications\u003c\/li\u003e\n\u003cli\u003eCut to size available on request\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout 6063 T6 Aluminium\u003c\/h2\u003e\n\u003cp\u003e6063 T6 is a medium-strength architectural alloy known for its clean surface finish, high corrosion resistance and excellent workability. It is readily machined, drilled, welded and anodised, making it a popular choice for both functional and decorative fabrication.\u003c\/p\u003e\n\u003ch2\u003eCommon Uses\u003c\/h2\u003e\n\u003cp\u003eMachining and turning, shafts, pins, dowels and spacers, structural and architectural framing, brackets and supports, vehicle and marine components, and general fabrication and DIY.\u003c\/p\u003e\n\u003ch2\u003eFinish\u003c\/h2\u003e\n\u003cp\u003eSupplied in a standard mill finish. The surface may show normal mill marking or handling marks typical of extruded aluminium bar. A brushed, polished or anodised finish can be applied separately if required.\u003c\/p\u003e\n\u003ch2\u003eDelivery Information\u003c\/h2\u003e\n\u003cp\u003eLead times are currently 3-5 working days. Bars are supplied in 4m lengths, so suitable delivery access is required. If your order is long or heavy, please ensure someone is available to help with offloading on arrival.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What diameters of aluminium round bar are available?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"12mm to 80mm diameter in 4m lengths. Check the product page for the full size range and prices.\"}}, {\"@type\": \"Question\", \"name\": \"What is aluminium round bar used for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Turned parts, pins, axles, spacers, handles, model-making, CNC machining stock, furniture legs, curtain poles and general fabrication. 6063 T6 machines well.\"}}, {\"@type\": \"Question\", \"name\": \"Can aluminium round bar be machined on a lathe?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. 6063 T6 machines cleanly on a lathe, mill or CNC. Use sharp HSS or carbide tooling with appropriate speeds and feeds for aluminium.\"}}, {\"@type\": \"Question\", \"name\": \"How does 6063 aluminium round bar compare to 6082?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"6063 is softer, more formable and anodises better — suited to architectural and decorative work. 6082 is stronger and harder — better for structural and high-stress machined parts.\"}}, {\"@type\": \"Question\", \"name\": \"What length is supplied?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"4m per bar. Can be cut to length on site with a hacksaw, bandsaw or chop saw.\"}}]}\u003c\/script\u003e","brand":"Rackerman","offers":[{"title":"12mm (1\/2\") x 4m","offer_id":58131513672067,"sku":"ALU-RB-900212","price":28.99,"currency_code":"GBP","in_stock":true},{"title":"19mm (3\/4\") x 4m","offer_id":58131513704835,"sku":"ALU-RB-900234","price":57.99,"currency_code":"GBP","in_stock":true},{"title":"25mm (1\") x 4m","offer_id":58131513737603,"sku":"ALU-RB-90021","price":102.99,"currency_code":"GBP","in_stock":true},{"title":"38mm (1.1\/2\") x 4m","offer_id":58131513770371,"sku":"ALU-RB-9002112","price":204.99,"currency_code":"GBP","in_stock":true},{"title":"50mm (2\") x 4m","offer_id":58131513803139,"sku":"ALU-RB-90022","price":342.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/1710\/6429\/files\/90022x1000.jpg?v=1779909191"},{"product_id":"3m-mild-steel-round-bar-s275","title":"3m Mild Steel Round Bar S275 - Solid Steel Bar 8mm to 20mm","description":"\u003cp\u003eBuy our mild steel round bar in grade S275, supplied in 3m (3000mm) lengths. A solid, versatile round section ideal for fabrication, engineering, shafts, pins, balustrades, gates and general construction. Available in diameters from 8mm to 20mm with cut-to-size available on request and fast UK delivery.\u003c\/p\u003e\n\u003ch2\u003eSizes\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e8mm diameter\u003c\/td\u003e\n\u003ctd\u003e3m (3000mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10mm diameter\u003c\/td\u003e\n\u003ctd\u003e3m (3000mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e12mm diameter\u003c\/td\u003e\n\u003ctd\u003e3m (3000mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e14mm diameter\u003c\/td\u003e\n\u003ctd\u003e3m (3000mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e16mm diameter\u003c\/td\u003e\n\u003ctd\u003e3m (3000mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e20mm diameter\u003c\/td\u003e\n\u003ctd\u003e3m (3000mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eAll bars are solid S275 mild steel in 3m lengths. Cut to size is available on request - contact us before ordering with your required lengths.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGrade S275 mild steel - strong, weldable and easy to machine\u003c\/li\u003e\n\u003cli\u003eSolid round section in 3m (3000mm) lengths\u003c\/li\u003e\n\u003cli\u003eDiameters from 8mm to 20mm\u003c\/li\u003e\n\u003cli\u003eIdeal for welding, drilling, turning and fabrication\u003c\/li\u003e\n\u003cli\u003eSuitable for shafts, pins, dowels, balustrades, gates and general engineering\u003c\/li\u003e\n\u003cli\u003eCut to size available on request\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout S275 Mild Steel\u003c\/h2\u003e\n\u003cp\u003eS275 is a common general-purpose structural mild steel to BS EN 10025-2, valued for its strength, ductility and excellent weldability. It machines, drills and fabricates readily, making round bar a versatile choice for both structural and general engineering work.\u003c\/p\u003e\n\u003ch2\u003eCommon Uses\u003c\/h2\u003e\n\u003cp\u003eFabrication and welding projects, shafts, pins, dowels and spacers, balustrade and gate components, brackets and supports, repair and general engineering, and DIY metalwork.\u003c\/p\u003e\n\u003ch2\u003eFinish\u003c\/h2\u003e\n\u003cp\u003eSupplied in standard mill finish. The surface may show normal mill scale, handling marks or light surface oxidation typical of untreated steel. For outdoor or damp use, clean, prime and protect with a suitable coating.\u003c\/p\u003e\n\u003ch2\u003eDelivery Information\u003c\/h2\u003e\n\u003cp\u003eLead times are currently 3-5 working days. Bars are supplied in 3m lengths, so suitable delivery access is required. If your order is long or heavy, please ensure someone is available to help with offloading on arrival.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What diameters are available in 3m round bar?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"8mm to 40mm. The 3m length is easier to handle, transport and store than 6m — ideal for workshop fabrication and smaller projects.\"}}, {\"@type\": \"Question\", \"name\": \"What grade is the 3m round bar?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"S275 to BS EN 10025-2. Hot-rolled black finish with mill scale. Weldable for general fabrication.\"}}, {\"@type\": \"Question\", \"name\": \"Can 3m round bar be threaded?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. S275 round bar can be threaded with hand dies or on a lathe. For precision threads, bright drawn bar (EN3B) gives a better finish.\"}}, {\"@type\": \"Question\", \"name\": \"What is 3m round bar used for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Pins, axles, handles, brackets, gate components, balustrade spindles, spacers, machine parts and general fabrication where shorter stock is more practical.\"}}, {\"@type\": \"Question\", \"name\": \"How does 3m round bar differ from 6m?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Same grade and diameter range — just shorter. 3m fits in a standard van, is easier to handle solo and produces less waste on shorter jobs.\"}}]}\u003c\/script\u003e","brand":"Rackerman","offers":[{"title":"8mm x 3m","offer_id":58131777782147,"sku":"RB-S275-300283","price":25.99,"currency_code":"GBP","in_stock":true},{"title":"10mm x 3m","offer_id":58131777814915,"sku":"RB-S275-3002103","price":26.99,"currency_code":"GBP","in_stock":true},{"title":"12mm x 3m","offer_id":58131777847683,"sku":"RB-S275-3002123","price":29.99,"currency_code":"GBP","in_stock":true},{"title":"14mm x 3m","offer_id":58131777880451,"sku":"RB-S275-3002143","price":32.99,"currency_code":"GBP","in_stock":true},{"title":"16mm x 3m","offer_id":58131777913219,"sku":"RB-S275-3002163","price":36.99,"currency_code":"GBP","in_stock":true},{"title":"20mm x 3m","offer_id":58131777945987,"sku":"RB-S275-3002203","price":44.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/1710\/6429\/files\/hf_20260619_080044_070d5c96-990f-4ea4-9fc0-72244ed3306d.png?v=1781877640"},{"product_id":"bright-mild-steel-round-bar-en3b-3m","title":"Bright Mild Steel Round Bar 3m - EN3B 080A15 Bar 4mm to 25mm","description":"\u003cp\u003eBuy our bright mild steel round bar in grade EN3B (080A15), supplied in 3m lengths. Bright drawn for a smooth surface finish and close dimensional tolerance, this round bar is ideal for machining, turning, shafts, pins and precision fabrication. Available in diameters from 4mm to 25mm with cut-to-size available on request and fast UK delivery.\u003c\/p\u003e\n\u003ch2\u003eSizes\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4mm diameter\u003c\/td\u003e\n\u003ctd\u003e3m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5mm diameter\u003c\/td\u003e\n\u003ctd\u003e3m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6mm diameter\u003c\/td\u003e\n\u003ctd\u003e3m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e8mm diameter\u003c\/td\u003e\n\u003ctd\u003e3m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10mm diameter\u003c\/td\u003e\n\u003ctd\u003e3m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e12mm diameter\u003c\/td\u003e\n\u003ctd\u003e3m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e16mm diameter\u003c\/td\u003e\n\u003ctd\u003e3m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e20mm diameter\u003c\/td\u003e\n\u003ctd\u003e3m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e25mm diameter\u003c\/td\u003e\n\u003ctd\u003e3m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eAll bars are bright drawn EN3B mild steel in 3m lengths. Cut to size is available on request - contact us before ordering with your required lengths.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGrade EN3B (080A15) bright drawn mild steel\u003c\/li\u003e\n\u003cli\u003eSmooth bright surface finish and close dimensional tolerance\u003c\/li\u003e\n\u003cli\u003eSolid round section in 3m lengths\u003c\/li\u003e\n\u003cli\u003eDiameters from 4mm to 25mm\u003c\/li\u003e\n\u003cli\u003eIdeal for machining, turning, drilling and precision fabrication\u003c\/li\u003e\n\u003cli\u003eSuitable for shafts, pins, dowels and engineering components\u003c\/li\u003e\n\u003cli\u003eCut to size available on request\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout EN3B (080A15) Bright Bar\u003c\/h2\u003e\n\u003cp\u003eEN3B, also known as 080A15, is a low-carbon bright drawn mild steel. The bright drawing process gives a smoother surface finish and tighter dimensional tolerance than hot-rolled bar, making it well suited to machining, turning and applications where finish and accuracy matter. It is readily welded, drilled and fabricated.\u003c\/p\u003e\n\u003ch2\u003eBright Bar vs Hot-Rolled (Black) Bar\u003c\/h2\u003e\n\u003cp\u003eBright bar is cold drawn for a clean, accurate finish and closer tolerance, ideal for machining and visible work. Hot-rolled (black) bar, such as our S275 round bar, has a darker scaled surface and looser tolerance, and is typically chosen for general structural and fabrication use where finish is less critical.\u003c\/p\u003e\n\u003ch2\u003eCommon Uses\u003c\/h2\u003e\n\u003cp\u003eMachining and turning, shafts, pins, dowels and spacers, engineering components, brackets, repair work and general precision fabrication.\u003c\/p\u003e\n\u003ch2\u003eFinish\u003c\/h2\u003e\n\u003cp\u003eSupplied bright drawn with a smooth finish. Bright bar is not corrosion-protected, so for outdoor or damp use it should be cleaned and protected with a suitable coating.\u003c\/p\u003e\n\u003ch2\u003eDelivery Information\u003c\/h2\u003e\n\u003cp\u003eLead times are currently 3-5 working days. Bars are supplied in 3m lengths, so suitable delivery access is required. If your order is long or heavy, please ensure someone is available to help with offloading on arrival.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is EN3B bright mild steel?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"EN3B (080A15) is a low-carbon bright drawn mild steel with a smooth, shiny finish and tight dimensional tolerances. It is the standard material for turned parts, machining stock and applications where surface finish matters.\"}}, {\"@type\": \"Question\", \"name\": \"How does bright bar differ from black bar?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Bright bar is cold-drawn through a die, giving a smooth surface, accurate diameter and closer tolerances. Black bar is hot-rolled with a rough mill scale surface and wider tolerances. Bright suits machining; black suits structural fabrication.\"}}, {\"@type\": \"Question\", \"name\": \"What diameters are available?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"4mm upwards in 3m lengths. Check the product page for the full diameter range.\"}}, {\"@type\": \"Question\", \"name\": \"Can EN3B be case-hardened?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. EN3B is a low-carbon steel that can be case-hardened (carburised) to give a hard wear-resistant surface with a tough core. It is widely used for pins, shafts and small machine components for this reason.\"}}, {\"@type\": \"Question\", \"name\": \"What is bright round bar used for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"CNC and manual turning, machined pins and shafts, dowels, axles, bushings, spacers, model engineering, furniture components and any application requiring a precise, clean-finish bar.\"}}]}\u003c\/script\u003e","brand":"Rackerman","offers":[{"title":"4mm x 3m","offer_id":58131778044291,"sku":"BMS-RB-3032004","price":23.99,"currency_code":"GBP","in_stock":true},{"title":"5mm x 3m","offer_id":58131778077059,"sku":"BMS-RB-3032005","price":24.99,"currency_code":"GBP","in_stock":true},{"title":"6mm x 3m","offer_id":58131778109827,"sku":"BMS-RB-3032006","price":25.99,"currency_code":"GBP","in_stock":true},{"title":"8mm x 3m","offer_id":58131778142595,"sku":"BMS-RB-3032008","price":28.99,"currency_code":"GBP","in_stock":true},{"title":"10mm x 3m","offer_id":58131778175363,"sku":"BMS-RB-3032010","price":31.99,"currency_code":"GBP","in_stock":true},{"title":"12mm x 3m","offer_id":58131778208131,"sku":"BMS-RB-3032012","price":36.99,"currency_code":"GBP","in_stock":true},{"title":"16mm x 3m","offer_id":58131778240899,"sku":"BMS-RB-3032016","price":49.99,"currency_code":"GBP","in_stock":true},{"title":"20mm x 3m","offer_id":58131778273667,"sku":"BMS-RB-3032020","price":65.99,"currency_code":"GBP","in_stock":true},{"title":"25mm x 3m","offer_id":58131778306435,"sku":"BMS-RB-3032025","price":90.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/1710\/6429\/files\/hf_20260623_111824_0a3d2e86-9243-4d25-8e76-21efe6b6dcb1.jpg?v=1782214048"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/1710\/6429\/collections\/hf_20260628_140254_262bacc8-b18b-4e1a-9ef1-602e0875bac9.png?v=1782655656","url":"https:\/\/rackerman.co.uk\/collections\/steel-round-bar.oembed","provider":"Rackerman","version":"1.0","type":"link"}