{"product_id":"a513-cold-roll-carbon-steel-round-tubing-5-8-in-od-strong-precise","title":"A513 Cold Roll Carbon Steel Round Tubing 5\/8 in OD - Strong, Precise","description":"\u003cp\u003eIn this review of the A513 Cold Roll Carbon Steel Round Tubing, the bottom line is simple: this is a solid choice for builders and fabricators who need a straight, strong length of drawn-over-mandrel tubing that meets ASTM-A513. The tubing's greatest selling point is its rigidity and material consistency, making it well suited for pins, shafts, spindles and light structural work where strength matters more than ease of machining. For projects that demand predictable dimensions and durable 1018 carbon steel, this tube delivers reliable performance.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 1018 carbon steel offers good strength and rigidity for load-bearing shafts and pins.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard:\u003c\/strong\u003e Meets ASTM-A513, which ensures the tubing is produced to consistent commercial tubing specifications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Cold roll drawn over mandrel construction yields a straight, uniform wall that reduces runout in rotating parts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 5\/8 in outside diameter with a 0.39 in inside diameter and 0.12 in wall provides predictable fit for bores and bearings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e A 48 in length is convenient for cutting multiple parts or long single-piece applications without seams.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis tubing is aimed at hobby machinists, restoration shops, and light industrial fabricators who need a durable, consistent steel tube for pins, rods, shafts, spindles and sprockets. Its strength and straightness make it useful for automotive repair tasks, small machinery builds, and custom fittings where rigidity matters.\u003c\/p\u003e\n\u003cp\u003eThose who need maximum machinability, weldability, or a stainless option should look elsewhere; A513 1018 carbon steel trades slightly lower machinability and weldability for higher strength and rigidity, so it is less convenient when heavy welding or fine finishing is the main requirement.\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\u003eStrong and rigid 1018 carbon steel construction that performs well under load.\u003c\/li\u003e\n\u003cli\u003eConsistent, cold-rolled drawn over mandrel finish produces straight tubing with uniform wall thickness.\u003c\/li\u003e\n\u003cli\u003eMeets ASTM-A513, providing a reliable manufacturing standard for repeatable results.\u003c\/li\u003e\n\u003cli\u003eGood value for applications where material strength is the priority.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMachinability and weldability are slightly lower than softer steels, which can slow fabrication in some shops.\u003c\/li\u003e\n\u003cli\u003eSome customers report the inner diameter can be slightly smaller than expected, which may affect tight-fit applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e1018 carbon steel (A513)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eCold roll, drawn over mandrel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutside Diameter\u003c\/td\u003e\n\u003ctd\u003e5\/8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInside Diameter\u003c\/td\u003e\n\u003ctd\u003e0.39 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWall Thickness\u003c\/td\u003e\n\u003ctd\u003e0.12 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e48 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe A513 Cold Roll Carbon Steel Round Tubing is a practical, cost-effective choice for anyone needing a sturdy, straight length of 1018 tubing for shafts, pins and light structural work. It offers good material quality and ASTM-A513 compliance, delivering value where strength and dimensional consistency matter more than easy weldability or ultra-fine machining.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this tubing welded or seamless?\u003c\/strong\u003e\u003cbr\u003eIt is cold roll drawn over mandrel to produce a consistent tube that meets ASTM-A513; the process yields a uniform wall suited for rotating parts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill the inner diameter accept standard bearings?\u003c\/strong\u003e\u003cbr\u003eThe ID is 0.39 in; most bearings designed for a slightly larger bore will fit, but a few customers note the inner diameter can measure slightly small, so verify before final installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this steel be welded easily?\u003c\/strong\u003e\u003cbr\u003e1018 carbon steel welds acceptably but has slightly lower weldability than lower carbon steels, so welding may require preheat or careful technique for best results.\u003c\/p\u003e","brand":"Online Metals","offers":[{"title":"Default Title","offer_id":48185987006683,"sku":"B000H9P4L4","price":53.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51RCqvxR91L._AC_SL1000_2669cae3-d758-4379-b402-8e3ef5ef59c8.jpg?v=1769574438","url":"https:\/\/gearmusthave.com\/products\/a513-cold-roll-carbon-steel-round-tubing-5-8-in-od-strong-precise","provider":"GearMustHave","version":"1.0","type":"link"}