Only the Best Aluminum Alloys Used by EZTube

Aluminum alloys play a crucial role in aerospace engineering due to their exceptional combination of lightweight properties, strength, and corrosion resistance. Among these alloys, 6063 T5 stands out as a versatile material that finds its place in various aerospace applications. For this EZTube Academy article, we will delve into what 6063 T5 aerospace aluminum is, its alloy composition, and its wide range of applications within the aerospace industry.

Alloy Composition:

6063 T5 aerospace aluminum is part of the 6000 series aluminum alloys, which are known for their excellent extrudability, forming characteristics, and heat-treatability. The “6063” in its name refers to the specific alloy within this series, while “T5” signifies the temper or heat treatment applied to enhance its mechanical properties.

The chemical composition of 6063 T5 aerospace aluminum typically includes:

  1. Aluminum (Al): Aluminum is the primary element in this alloy, constituting the majority of its composition, typically over 97%. Its lightweight nature makes it an ideal choice for aerospace applications.
  2. Silicon (Si): Silicon is the second most abundant element, usually comprising around 0.2-0.6% of the alloy. Silicon enhances the alloy’s strength and contributes to its heat resistance.
  3. Magnesium (Mg): Magnesium is present in smaller quantities, typically around 0.45-0.9%. It enhances the alloy’s strength and corrosion resistance.
  4. Iron (Fe): Iron is a minor element, generally less than 0.35%, and helps improve the alloy’s strength and durability.
  5. Copper (Cu): Copper is another minor element, usually below 0.1%, that aids in improving corrosion resistance and mechanical properties.
  6. Manganese (Mn): Manganese is added in trace amounts, typically less than 0.1%, and assists in refining the grain structure of the alloy.
  7. Chromium (Cr): Chromium, when present, is typically in very small quantities, usually less than 0.1%, and contributes to the alloy’s resistance to corrosion.


6063 T5 aerospace aluminum is prized for its combination of strength, lightness, and corrosion resistance, making it an excellent choice for various aerospace applications, including:

  1. Aircraft Fuselages: It is often used in the construction of aircraft fuselages due to its light weight and ability to maintain structural integrity under stress.
  2. Wing Components: This alloy is utilized in wing components where strength, rigidity, and weight savings are crucial.
  3. Interior Fittings: 6063 T5 is favored for interior fittings like seats, cabin walls, and storage compartments due to its lightweight properties.
  4. Structural Frameworks: It is used in the construction of structural frameworks for aircraft, providing the necessary strength while minimizing weight.
  5. Aerospace Extrusions: The alloy’s excellent extrudability makes it ideal for producing complex aerospace extrusions for various applications.

For these reasons, EZTube exclusively uses 6063 T5 aluminum for its extrusions. This aluminium alloy a remarkable material with a well-balanced alloy composition that combines aluminum’s natural lightweight properties with enhanced strength and corrosion resistance. Its versatility has established it as a staple in aerospace engineering and elsewhere, where lightweight and durable materials play a key part in innovation. As technology continues to advance, we can expect to see 6063 T5 aluminum continue to play a crucial role in shaping the future of materials engineering for EZTube.