Aluminum Extrusion 20×20: A Versatile Square Profile

In this post, you will discover the versatility of the aluminum extrusion 20×20 profile. This standardized square cross-section offers a unique combination of strength, lightweight, and corrosion resistance, making it a popular choice across industries. Learn about the benefits, such as its suitability for indoor and outdoor use, and potential drawbacks to consider. With detailed dimensions, material properties, and CAD model availability, this guide equips you to integrate the aluminum extrusion 20×20 into your next project, whether it’s industrial, architectural, or DIY. Unlock the full potential of this versatile aluminum profile for your needs.

An Overview about 20×20 Aluminum Extrusion

Aluminum extrusion 20×20 refers to a square-shaped aluminum profile with precise dimensions of 20 millimeters (mm) in width and 20 mm in height. This standardized size is a common and widely used aluminum extrusion product, offering a perfect square cross-section that provides structural integrity and design flexibility.

aluminum extrusion 20x20

Manufactured through the specialized aluminum extrusion process, the 20×20 aluminum extrusion profile leverages the inherent benefits of aluminum, including lightweight, corrosion resistance, and high strength-to-weight ratio. The square shape and standardized dimensions allow for easy integration into a wide range of applications and compatibility with various accessories and joining methods.

Widely available from numerous manufacturers and suppliers, this versatile aluminum extrusion size is a popular choice across diverse industries, from construction and machinery to furniture and DIY projects. Its standardization and customization potential make it a go-to solution for engineers, designers, and hobbyists seeking to harness the power of aluminum extrusion.

20×20 Aluminum Extrusion Dimensions

The dimensions of a standard 20×20 aluminum extrusion are as follows:

  • Width: 20 millimeters (mm)
  • Height: 20 millimeters (mm)
  • Cross-Sectional Area: 400 square millimeters (mm²)

aluminum extrusion 20x20

To break this down further:

  • Width: The width of the aluminum extrusion is 20 mm, or approximately 0.79 inches.
  • Height: The height of the aluminum extrusion is also 20 mm, or approximately 0.79 inches.
  • Cross-Sectional Area: The total cross-sectional area of the 20×20 aluminum extrusion is calculated by multiplying the width and height, which results in 400 square millimeters (mm²), or approximately 0.62 square inches.

Benefits and Drawbacks to Using Aluminum Extrusion 20×20

This standardized 20×20 mm square profile is a widely used size in the aluminum extrusion industry, offering a range of benefits, however, everything always has both benefits and drawbacks.

Let’s explore the key benefits and potential drawbacks of using aluminum extrusion 20×20:

Benefits of Aluminum Extrusion 20×20

Structural Integrity:

  • The square cross-section of 20×20 mm provides high strength and rigidity, making it suitable for structural applications.
  • The aluminum alloy used, such as 6063 or 6061, offers an optimal balance of strength and weight.


  • Aluminum is a lightweight material, allowing for the creation of sturdy yet lightweight structures.
  • This makes 20×20 aluminum extrusion a viable choice for applications where weight is a critical factor.

aluminum extrusion 20x20

Corrosion Resistance:

  • Aluminum is inherently corrosion-resistant, making 20×20 extrusions suitable for both indoor and outdoor use.
  • This property extends the lifespan and durability of the components.

Design Flexibility:

  • The standardized 20×20 mm dimensions allow for easy integration into a wide range of designs and applications.
  • The extrusion process enables the creation of custom profiles with additional features, such as grooves or holes.

Ease of Fabrication and Assembly:

  • 20×20 aluminum extrusions can be easily cut, drilled, and connected using various fastening methods.
  • This simplifies the fabrication and assembly process for various projects.

aluminum extrusion 20x20

Potential Drawbacks of Aluminum Extrusion 20×20

Limited Load-Bearing Capacity:

  • While strong for its weight, the 20×20 mm size may have limitations in terms of maximum load-bearing capacity compared to larger extrusion sizes.
  • For applications requiring higher structural loads, a larger extrusion size may be necessary.

Cost Considerations:

  • Aluminum extrusion can be more expensive than other materials, such as steel, especially for smaller quantities.
  • The cost may be a factor for budget-constrained projects or applications.

Potential for Deformation:

  • Aluminum, while strong, is still susceptible to deformation under high loads or impact forces.
  • Proper design, reinforcement, and support may be required in applications with significant stress or loading.

Surface Finish Limitations:

  • The extruded surface of 20×20 aluminum may not have the same level of polish or smoothness as other finishing processes, such as machining or casting.
  • Specific surface treatments or coatings may be required for certain aesthetic or functional requirements.

Overall, the benefits of 20×20 aluminum extrusion, including its structural integrity, lightweight, and corrosion resistance, often outweigh the potential drawbacks, making it a widely used and versatile solution across various industries and applications.

20×20 Aluminum Extrusion CAD Models

Here’s some information on 20×20 aluminum extrusion CAD models:

CAD Models for 20×20 Aluminum Extrusion:

aluminum extrusion 20x20

Engineers, designers, and 3D modelers often create CAD (Computer-Aided Design) models of 20×20 aluminum extrusions to incorporate them into their digital designs and product development workflows. These CAD models typically include the following characteristics:


The CAD model accurately represents the standard 20mm x 20mm square cross-section of the aluminum extrusion.

The wall thickness is typically modeled between 1.5mm to 2.5mm, depending on the specific application and manufacturer.


The CAD model incorporates the standard dimensional tolerance of ±0.2mm to match the real-world specifications of the 20×20 aluminum extrusion.

Profiles and Features

In addition to the basic square profile, CAD models may include variations with additional features, such as mounting holes, grooves, or custom shapes.

These profiles allow designers to explore and incorporate the extrusion’s versatility into their designs.

aluminum extrusion 20x20

Material Properties

The CAD model can be assigned the material properties of the specific aluminum alloy used, such as 6063 or 6061, to accurately represent the mechanical and physical characteristics.

Rendering and Visualization

CAD models can be used to create realistic renderings and visualizations of the 20×20 aluminum extrusion within the overall product or assembly.

This helps designers and engineers evaluate the aesthetic and functional integration of the extrusion into their designs.

CAD Models Availability

Many aluminum extrusion manufacturers and suppliers provide downloadable CAD models of their standard profiles, including the 20×20 size, on their websites or through online CAD libraries.

These ready-to-use CAD models can be directly imported into various 3D modeling and CAD software, such as AutoCAD, SolidWorks, Inventor, and CATIA, streamlining the design process.

aluminum extrusion 20x20

Using CAD models of 20×20 aluminum extrusions allows designers, engineers, and architects to accurately incorporate this versatile profile into their digital designs, facilitating efficient product development, assembly planning, and visualization.


The aluminum extrusion 20×20 emerges as a highly adaptable and desirable choice for a wide range of applications. Its combination of structural integrity, lightweight, and corrosion resistance makes it a standout among aluminum profiles. While there are some limitations, such as load-bearing capacity and cost considerations, the inherent benefits often outweigh these drawbacks. As designers, engineers, and DIY enthusiasts explore the versatility of this square profile, the possibilities for innovative use cases continue to expand. Whether in industrial, architectural, or custom projects, the aluminum extrusion 20×20 offers a versatile and reliable solution that can elevate the performance and aesthetics of any endeavor. Its widespread appeal is a testament to its enduring value.


Stavian Industrial Metal Joint Stock Company


  • Headquarters: No.508 Truong Chinh Street, Nga Tu So Ward, Dong Da District, Hanoi City
  • Hai Phong Branch: 6th Floor, Thanh Dat 1 Tower, No.3 Le Thanh Tong Street, May To Ward, Ngo Quyen District, Hai Phong City
  • Southern Branch: 12Ath Floor, Vincom Center, No.72 Le Thanh Ton, District 1, Ho Chi Minh City
  • Hotline: +84 2471001868 / +84975271499






Zalo Chat