Click to ExpandAluminum Alloy 6063

Aluminum alloy 6063 is one of the most common material options used for the extrusion process.
Also known as architectural aluminum, aluminum alloy 6063 is a medium-strength alloy with high corrosion resistance, weldability, and excellent workability. The quality surface finish and ability to anodize 6063 aluminum make it a natural selection when choosing a material to use in architectural projects and many others.


Due to its medium strength, fair machinability, and ability to be extruded into complex shapes, 6063 aluminum is used in many industries and applications. For example, 6063 aluminum is commonly extruded into channels and tubing for use in various architectural projects.

Specific applications of aluminum alloy 6063 include:

  • Truck frames & trailers
  • Storage tanks
  • Recreation equipment
  • Piping
  • Marine components
  • Building projects
  • Irrigation tubing
  • Electrical components
  • Shop fittings
  • Sign frames
  • Balustrading
  • Roofs
  • Door frames
  • Railing
  • Window frames

6063 Alloy for Aluminum Extrusions

Its weldability, ability to be heat treated, and beneficial mechanical properties make 6063 aluminum one of the most commonly used materials for extrusion, especially for architectural and thin-walled applications. This popularity can be largely attributed to its responsiveness to anodizing, ease of extrudability, and excellent surface finish characteristics.

Because it can produce superior quality surface finishes, aluminum 6063 extrusions are an ideal choice for applications concerned with cosmetics and visual appeal. Through various processes, the surface finish can be altered to meet various needs. For example, 6063 aluminum extrusions can undergo acid etching to produce a matte finish, whereas the polishing process can create a more reflective surface that can be further enhanced through bright dip anodization.

Aluminum 6061 vs Aluminum 6063

While aluminum 6063 is very common in extrusion, another popular material choice is aluminum 6061. These materials are both part of the 6000 series, meaning they share many of the same qualities. For example, they offer similar workability, weldability, and corrosion resistance. However, 6061 features higher strength than 6063, making it more suitable for structural applications requiring stronger aluminum extrusions.

When choosing which material is best for your extrusion project, consider the following:

  • 6061 aluminum has a lower heat capacity, lower thermal conductivity, and a lower melting point, compared to 6063.
  • 6063 is more easily formed into complex shapes with smooth finishes and offers better corrosion resistance.
  • Alloy 6063 is more suitable for anodizing processes to produce more visually appealing building and architectural components.
  • Due to its higher corrosion resistance, 6063 aluminum extrusions are the better choice for applications exposed to weather.

If you need help determining which material option is best for your particular project, the experts at Tri-State Aluminum can help.

6063 Aluminum Alloy Extrusions from Tri-State Aluminum

6063 aluminum alloy is a great choice for the extrusion process, offering good corrosion resistance, excellent extrudability, and the ability to be formed into various complex shapes. While this material is most commonly used in architectural applications, it can also be found in industries such as marine, electrical, recreation, and more.

At Tri-State Aluminum, we are your one-stop-shop for all your standard and custom aluminum extrusion needs. From the initial design process to cutting, fabricating, finishing, and packaging, we work with our customers from beginning to end to ensure total satisfaction. With high-tech capabilities like CNC machining, turning, stamping, radius bending, welding, and more, Tri-State Aluminum can deliver complete products to meet your needs.

For more information about our aluminum extrusion capabilities, or to learn whether aluminum alloy 6063 is right for your project, contact us or request a quote today.

This is for general/informational purposes only: