Introduction 

It’s important to know the materials and the specific requirements of the projectc , before we choose proper type of steel pipe for this project. ASTM A500 and ASTM A513 are both common standard, which are used widely. Each of them has its own performance, applications, and advantages. And both of them are all used in industrial fields. Which one is suit for your project best? In this introduction, we will show the main differences between ASTM A500 and ASTM A513, to help you make wise decision.

The critical difference between ASTM A500 and ASTM A513 are their special application applicability and mechanical properties. ASTM A500 has higher yield strength, so it is always used in structural purpose. A513 is often used in mechanical and ornamental purposes, because of the demand of lower strength and stricter tolerance.

Now, we will discuss the unique features of ASTM A500 and ASTM A513, including their chemical composition, strength and application aspects.

What is ASTM A500?

The standard specification of Cold formed welded and seamless carbon steel structural pipes is ASTM A500, which mainly used in structural applications. ASTM A500 is the best choice of load-bearing structure, because its high yield strength. ASTM A500 is always used in construction,bridge and other heavy projects.

The main characteristic of A500 is that it can stand high pressure, so it become the fist choice of structural steel projects. It is always produced in shapes of square, rectangle and circle, and used in multiple applications in various industries.

What is ASTM A513?

ASTM A513 is the standard of resistance welded carbon steel pipe, mainly used in mechanical and decoration application. Different from A500, the tolerance standard of A513 is stricter, it is designed specifically for applications that require precise specifications, such as fence, handle and other decoration application.

A513 is made of high-carbon steel alloy, that make it has higher strength and durability ,but lower robustness. It is often used in the applications that do not need to withstand heavy loads but demand accurate size.

ASTM A500 vs A513: Strength and Durability

One of the most significant differences between ASTM A500 and ASTM A513 is their strength.

• ASTM A500: With high tensile strength (from 46000 to 58000) and high yield strength, ASTM A500 is the best choice for heavy loading structures.
• ASTM A513: It tensile strength (from 40000 to 55000) ,but lower yield strength, like 3000. That make it  limited when using in heavy structures.

For projects where structural integrity is critical, ASTM A500 would be the better choice. It’s a strong, durable material capable of withstanding high-stress environments. ASTM A513, while durable, is designed more for lighter-duty applications where strength is not the main concern.

For the projects that have higher requirement for structural integrity, ASTM A500 is more suitable. ASTM A500 is a robust material to stand high pressure environments. ASTM A513 is durable too, but it is more suitable for lightweight applications.

Applications of ASTM A500

ASTM A500 is mainly used in structural application, because its high strength and durability. Here are some common applications:

• Building construction(frames, columns, beams)
• Bridges and overpasses
• Towers and pylons
• Heavy equipment

It your project needs higher pressure bearing capacity, A500 is the best choice. A500 is always the best choice in industries that require load-bearing materials.

Applications of ASTM A513

On the other hand, ASTM A513 is more suitable for the precision and low-intensity decorative demanding applications. The common uses of A513 pipe include:

• Handrails and decorative fencing
• Bicycles and frames
• Furniture frames
• Automotive parts (non-structural)

A513 has stricter tolerance for special shapes. So it is the preferred material for projects that require aesthetic appeal and precise measurement.

Size and Tolerance Differences Between ASTM A500 and A513

Although ASTM A500 and A513 all have many different kinds of shape, compared to A500, ASTM A513 always has stricter tolerance. So if the project needs exact specifications and consistent dimensions, A513 must be the best choice.

• A500have various sizes and shapes to choose, and its production process with looser tolerances make it is suitable to use in the stronger applications.
• A513is often used in applications with high precision, because its stricter precise.

Price Comparison: ASTM A500 vs A513

Generally speaking, in terms of price, ASTM A500 is higher than ASTM A513. For its higher intensity, A500 oil pipeline is often used in heavy projects. But that means A500 needs higher level of produce process, and higher costs.

ASTM A513 is especially designed for light-bearing projects. For these light-bearing projects, it’s more cost-effective comparing with A500. The more precise tolerance and smoother surface, make it more suitable for small items such as furniture and decorations.

Summary

In summary, ASTM A500 and ASTM A513 can be used in different scenes of pipeline industries. ASTM A500 is mostly used in large constructions, bridges and other heavy applications that that requires high strength and durability. At the meanwhile, ASTM A513 is suitable for these applications that need lower intensity mechanical and decorative but more precise tolerances and smoother surface.

How to choose the material depends on your need. If stress is the most important consideration factor, please choose A500. If accuracy and cost-effectiveness are more important, please choose A513.