When deciding on the right aluminum alloy for your extrusion project, you may have questions about how to choose from so many options. However, 6063 aluminum is an easy choice, since it offers good strength, machinability, corrosion resistance, and other desirable properties.

This guide will outline 6063 aluminum’s features, applications, benefits, and types to help you determine if this metal is the best material for your application.

What Is Aluminum 6063?

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Aluminum 6063, or 6063 aluminum, is a heat-treatable 6000 series alloy comprised of aluminum, magnesium, and silicon. Often called architectural aluminum, 6063 aluminum is often soft anodized to create colored, visually appealing architectural structures.

Aluminum 6063 Benefits and Applications

6063 aluminum is known for its excellent corrosion resistance against both chemicals and stress cracking. The alloy is easily welded and machined. Specifically, aluminum 6063 is a preferred material for long structural pieces with a constant cross-section, such as pipes, tubes, angles, and “U” or “L” shaped channels.

6063 aluminum is ideal for architectural applications. Some of the most common applications include:

  • Sign frames
  • Door frames
  • Window frames
  • Truck frames and trailers
  • Railings
  • Balustrading
  • Irrigation tubing
  • Roofing
  • Shop fittings
  • Extrusions

General Properties of 6063 and Common Types of 6063

Aluminum 6063 is a preferred material for extrusion because it can be easily pushed through dies to fit various cross-sectional shapes. As an alloy of aluminum, magnesium, and silicon—with trace amounts of iron, copper, manganese, and other elements—6063 aluminum is tough, flexible, workable, and corrosion-resistant. In fact, aluminum 6063 outperforms aluminum 6061 in corrosion resistance.

6063 aluminum comes in two variations: 6063-T4 and 6063-T6. They have similar physical compositions, but their mechanical properties differ due to contrasting tempering methods. Aluminum 6063-T4 is aged naturally, while 6063-T6 is aged artificially to boost strength.

Working With Industry Leader Richardson Metals, Inc.

With over 50 years in the industry, Richardson Metals is a leader in custom aluminum extrusions. Our vast capabilities include a 550-ton RAM press and a circular press that can accommodate parts up to 4 inches in diameter with a weight lower than 2.5 pounds per foot. We can produce tight tolerances as low as ± 0.005 inch and thicknesses as low as 0.02 inch. We specialize in extruding aluminum 6061 and aluminum 6063.

Richardson Metals is your one-stop aluminum extrusion service provider. Our experienced engineers, advanced production capabilities, and inspection equipment will save you time and money. Our manufacturing processes undergo stringent quality controls to ensure finished products meet your specifications.

To learn more about our services, vist our custom aluminum extrusions page. If you’re ready to get started on your custom solution, contact us today.


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