A500/A513 Carbon Steel Rectangular Tubing 2in x 5in x 0.25in

In this review of the A500/A513 Carbon Steel Rectangular Tubing the bottom line is straightforward: this is a practical, no-frills structural tube best suited for fabricators, hobby welders, and small contractors who need reliable, weldable steel at a low cost. The reviewer found the hot rolled A36 material to deliver the expected strength and clean surface finish, and customers consistently report good welding behavior and value for money, making it an obvious choice when standard dimensional tubing is required for frames, supports, or general structural use.

Key Features

• Material strength: A36 hot rolled steel provides the structural strength needed for general building and framing tasks without specialty alloys.
• Weldability: The A500/A513 grade steels are straightforward to weld, which saves time during fabrication and produces reliable joints.
• Standard size: The 2in height by 5in width profile with a 0.25in wall gives a predictable section modulus for common light structural uses.
• Length: At 48in length, the tube is long enough for many projects while remaining easy to handle and transport.
• Cost-effective: As a commonly available tubing in North America, it offers low cost compared with specialty materials for the same applications.
• Condition on arrival: Customers report the tubing often arrives clean with little to no rust, reducing prep time before use.

Who It's For

The tubing is aimed at metalworkers, fabricators, and builders who need a standard structural section for frames, guards, supports, or small structural elements; its combination of A36 hot rolled steel and A500/A513 classification makes it suitable for many common applications. It is also a good fit for hobbyist welders and makers who value predictable weld behavior and a familiar material.

Those who should look elsewhere include projects requiring tight cosmetic finishes, corrosion-critical outdoor structures without additional protection, or specialized alloy properties such as stainless or high-strength low-alloy steels; for those needs, a different grade or protective coating would be better.

Pros & Cons

Pros

• Good strength-to-cost balance for general structural projects.
• Reliable weldability reported by customers, simplifying assembly and repairs.
• Consistent, standard dimensions (2in x 5in x 0.25in) make planning and cutting straightforward.
• Customers note clean deliveries with minimal surface rust, reducing prep time.

Cons

• As hot rolled A36, surface finish is not mill-scale-free; cosmetic projects may need additional prep or coating.
• Not intended for corrosion-sensitive applications without painting or galvanizing.

Specifications

Product type	Rectangular tubing
Material	Carbon steel (Hot Rolled A36)
Standards	Meets ASTM A513, ASTM A500 (call for availability)
Height	2in
Width	5in
Wall thickness	0.25in
Length	48in

Our Verdict

The A500/A513 Carbon Steel Rectangular Tubing is a sensible, budget-friendly choice for general structural and fabrication work where standard A36 hot rolled steel is acceptable. It offers dependable weldability, common dimensions, and the value expected for raw structural tubing; buy it when you need straightforward performance and low cost, and plan to coat or finish the steel if corrosion resistance or a fine surface appearance is required.

Frequently Asked Questions

Is this tubing weldable?
Yes. The A500/A513 grades and A36 hot rolled steel are known for good weldability and are commonly used for welded frames and structures.

Does it come rust-free?
Customers report that pieces often arrive clean with little to no rust, but this is typical of hot rolled steel and some surface preparation or coating is recommended for long-term corrosion protection.

Can it be used for load-bearing structures?
Yes for general structural purposes such as frames, supports, and non-critical load-bearing elements, but verify design loads and applicable codes for your specific project.