A513 Cold Roll Carbon Steel Round Tubing 1-1/4 in OD - 24 in Length

In this review of the A513 Cold Roll Carbon Steel Round Tubing the bottom line is simple: if you need a short, sturdy length of drawn-over-mandrel carbon steel tubing for shafts, pins, or repair work, this 24 in piece delivers reliable strength and predictable fit. The reviewer found the tube's steel quality and rigidity to be the primary reasons to buy, and its conformity to ASTM-A513 means it suits mechanical uses where dimensional stability and material properties matter more than ease of welding.

Key Features

• Material: A513 1018 carbon steel provides high strength and rigidity for load-bearing parts and structural uses.
• Dimensions: The 1-1/4 in outside diameter and 0.188 in wall give a robust profile that works well for shafts and pins requiring durability.
• Inner diameter: A 0.87 in ID yields a sizable bore for bearing fits or internal machining while retaining solid wall thickness.
• Length: The 24 in cut length is convenient for projects that need a ready-to-use tube without extra cutting or welding preparation.
• Manufacture: Drawn over mandrel processing produces consistent outside diameter and a smoother finish than hot-rolled alternatives.
• Specification compliance: Meets ASTM-A513, offering assurance that material and dimensions meet a recognized industrial standard.

Who It's For

This tubing is aimed at mechanics, fabricators, and hobby machinists who need a short run of strong, cold-drawn carbon steel for pins, rods, shafts, spindles, or sprocket-related repairs. Its strength and rigidity make it suited to load-bearing and rotating parts where toughness matters.

Those who require exceptional weldability or very high machinability for extensive internal rework should consider alternative low-carbon or alloy steels, since 1018 A513 steel trades some ease of machining and welding for greater strength.

Pros & Cons

Pros

• Good material strength and rigidity for mechanical parts and structural use.
• Consistent drawn-over-mandrel OD and smoother finish compared with hot-rolled pipe.
• Convenient 24 in length reduces preparation time for many projects.
• Meets ASTM-A513, which helps ensure predictable performance for engineering work.

Cons

• Inner diameter may be slightly smaller than expected for some bearings or slip-fit applications, based on customer reports.
• Lower weldability and machinability than softer steels, so extra care or different filler methods may be needed.

Specifications

Standard	ASTM-A513
Material	1018 Cold Roll Carbon Steel
Outside Diameter (OD)	1-1/4 in
Inside Diameter (ID)	0.87 in
Wall Thickness	0.188 in
Length	24 in

Our Verdict

For anyone needing a short, strong section of round tubing for shafts, pins, or structural repairs, this A513 1018 cold roll tube is a pragmatic choice that balances cost and performance. It is particularly good value when strength and dimensional stability matter; buyers who need easy welding or extensive machining should weigh those trade-offs first.

Frequently Asked Questions

Is this tube ready to use straight from the cut?
The 24 in length arrives as a cut piece suitable for many installations, though final machining or surface prep may be needed for bearing fits.

Can this tubing be welded easily?
Weldability is moderate; 1018 carbon steel welds with proper technique but has lower weldability than lower-carbon steels.

Are the dimensions accurate to spec?
Dimensions generally match ASTM-A513 expectations, but some customers report the inner diameter can be slightly under nominal, so measure before final assembly.