{"product_id":"a513-cold-roll-carbon-steel-round-tubing-2-1-2in-od-strong-precise","title":"A513 Cold Roll Carbon Steel Round Tubing 2-1\/2in OD - Strong, Precise","description":"\u003cp\u003eOur review of the A513 Cold Roll Carbon Steel Round Tubing concludes it is a solid, cost-effective choice for projects that demand rigidity and predictable mechanical behavior. Intended for fabricators, machine shops, and hobbyists needing durable, round tubing, the biggest reason to buy is its combination of ASTM-A513 manufacturing and 1018 carbon steel composition, which provides dependable strength for pins, shafts, spindles, and structural uses. The tubing's measured dimensions and finished surface make it straightforward to machine and press-fit where tolerance and long lengths matter.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e ASTM-A513 1018 carbon steel gives the tube reliable tensile strength and consistent mechanical properties for load-bearing parts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e The 2-1\/2in outside diameter and 2.125in inside diameter provide a predictable geometry for bearings, hubs, or sleeves that need a tight fit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWall thickness:\u003c\/strong\u003e The 0.1875in wall balances rigidity and weight, making it suitable for shafts, pins, and structural supports without excessive mass.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e The 72in length reduces the need for splicing on longer runs and is convenient for cutting multiple parts from one piece.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Drawn over mandrel cold roll process produces a smooth surface and tighter dimensional tolerance than hot-rolled tube for accurate machining and assembly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis tubing is best suited to machine shops, fabricators, restoration projects, and hobbyists who need a sturdy, straight tube for making pins, rods, shafts, spindles, or sprocket hubs. The ASTM-A513 and cold-roll production make it attractive when repeatable dimensions and a better surface finish are required.\u003c\/p\u003e\n\u003cp\u003eIt is less appropriate for projects needing exceptional weldability or where very high machinability is mandatory; customers who require specialized alloys, corrosion resistance, or very large inside diameters should look elsewhere.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh strength and rigidity from 1018 carbon steel make it dependable for load-bearing parts.\u003c\/li\u003e\n\u003cli\u003eAccurate dimensions and drawn over mandrel finish aid in tight-fit assemblies and machining.\u003c\/li\u003e\n\u003cli\u003eLong 72in length allows multiple cuts for several parts from one tube, improving value for money.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLower machinability and weldability compared to some low-carbon or alloy steels, which can slow fabrication in some workflows.\u003c\/li\u003e\n\u003cli\u003eSome customers report the inner diameter can be slightly smaller than expected, so tight internal fits should be verified before final assembly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003eASTM-A513\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e1018 carbon steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutside Diameter\u003c\/td\u003e\n\u003ctd\u003e2-1\/2in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInside Diameter\u003c\/td\u003e\n\u003ctd\u003e2.125in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWall Thickness\u003c\/td\u003e\n\u003ctd\u003e0.1875in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e72in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe A513 cold roll round tubing is a practical, economical choice for those needing straight, strong tubing with good surface finish and reliable dimensions; it works well for shafts, pins, and structural components and represents solid value for most fabrication and repair tasks.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this tubing suitable for welding?\u003c\/strong\u003e\u003cbr\u003eThe 1018 carbon steel can be welded, but it has slightly lower weldability than low-carbon steels, so welding procedures should account for potential hardness or distortion.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill the inner diameter accept common bearing sizes?\u003c\/strong\u003e\u003cbr\u003eThe inside diameter is 2.125in, but some customers note it can be marginally under size, so confirm fit with the actual part before final assembly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this be machined for shafts and pins?\u003c\/strong\u003e\u003cbr\u003eYes; the cold roll finish and 1018 material are commonly machined into pins, rods, shafts, and spindles, though machinability is moderate compared with softer steels.\u003c\/p\u003e","brand":"Online Metals","offers":[{"title":"Default Title","offer_id":48635461206235,"sku":"B000H9K3R4","price":177.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51RCqvxR91L._AC_SL1000_8f964257-9997-4567-89b4-495e340aaac4.jpg?v=1778552842","url":"https:\/\/gearmusthave.com\/products\/a513-cold-roll-carbon-steel-round-tubing-2-1-2in-od-strong-precise","provider":"GearMustHave","version":"1.0","type":"link"}