What Is 6063-T5 Aluminium Alloy?
6063-T5 Aluminium Alloy in the Era of Industrial Automation
In the era of Industry 4.0, aluminum profiles are extensively applied across modern manufacturing. Products such as aluminum profile frames, safety fencing, equipment racks, robot frames, workbenches, step platforms, ladder tables, and aluminum assembly lines are now deeply integrated into industrial production. These aluminum structures have gradually replaced traditional steel frames, becoming the preferred solution during equipment upgrades and factory renovations.
When customizing aluminum profile framework systems, many manufacturers encounter the marking 6063-T5 provided by aluminum profile suppliers. However, not everyone clearly understands what this designation represents. At GNEE, we frequently receive questions about the meaning of 6063-T5. Below is a clear and professional explanation.
Meaning of 6063-T5 Aluminium Alloy
6063-T5 aluminium alloy consists of two key parts:
6063 refers to the aluminum alloy grade
T5 indicates the heat treatment condition
6063 aluminum alloy is a medium-strength, heat-treatable alloy that belongs to the 6xxx series, with magnesium and silicon as its primary alloying elements. This alloy is known for excellent extrudability, good corrosion resistance, and superior surface quality.
The T5 temper means the aluminum profile is cooled after high-temperature forming and then artificially aged. It does not undergo additional cold working such as straightening or leveling that would affect its mechanical properties.
6063-T5 Aluminium Alloy and Aluminum Alloy Grade System
The commonly used aluminum alloy numbering system follows the standards of the Aluminum Association (AA). The meaning of each digit is as follows:
First digit: Indicates the primary alloying elements
1xxx: Pure aluminum
2xxx: Aluminum-copper alloys
3xxx: Aluminum-manganese alloys
4xxx: Aluminum-silicon alloys
5xxx: Aluminum-magnesium alloys
6xxx: Aluminum-magnesium-silicon alloys
7xxx: Aluminum-zinc-magnesium alloys
8xxx: Other aluminum alloys
Second digit: Indicates alloy modification
0: Original alloy
1 or 2: Modified versions of the original alloy
Third and fourth digits: Identify the specific alloy
The suffix Tn represents a heat-treated condition, while Hn refers to strain-hardened, non-heat-treatable alloys.
Difference Between 6063-T5 Aluminium Alloy and 6063-T6 Aluminium Alloy
Although both materials belong to the same alloy grade, 6063-T5 aluminium alloy and 6063-T6 aluminium alloy differ in temper condition, mechanical performance, and application scope.
6063-T5 Aluminium Alloy Characteristics
6063-T5 aluminum profiles are suitable for products that are cooled after high-temperature extrusion and then artificially aged, without further cold processing.
Typical mechanical properties include:
Tensile strength: 160 MPa
Yield strength: 110 MPa
Hardness: ≥ 8.5
Elongation: 8%
This temper provides a balanced combination of strength and formability, making it widely used in industrial aluminum profile systems.
6063-T6 Aluminium Alloy Characteristics
6063-T6 aluminum alloy undergoes solution heat treatment followed by full artificial aging, resulting in higher hardness and strength.
Typical mechanical properties include:
Tensile strength: 205 MPa
Yield strength: 180 MPa
Hardness: ≥ 11.5
Elongation: 8%
Due to its enhanced mechanical strength, 6063-T6 is more suitable for applications requiring higher load-bearing performance.
Applications of 6063-T5 Aluminium Alloy
Thanks to its excellent processing performance and stable mechanical properties, 6063-T5 aluminium alloy is widely used in:
Industrial aluminum profile frames
Automation equipment structures
Aluminum workbenches and platforms
Conveyor systems and production lines
Robot frames and equipment racks
Architectural aluminum doors, windows, and curtain wall systems
At GNEE, 6063-T5 aluminium alloy is one of the most commonly supplied materials for industrial profile systems due to its reliability and cost-effectiveness.
Choosing the Right 6063 Aluminium Alloy Temper
When selecting aluminum materials, it is essential to choose the appropriate temper based on application environment and mechanical performance requirements. While 6063-T6 offers higher strength, 6063-T5 aluminium alloy provides an excellent balance of strength, formability, and processing efficiency, making it the preferred option for most industrial and architectural aluminum profile applications.
Conclusion
6063-T5 aluminium alloy is a versatile, heat-treatable material widely used in modern industrial and architectural systems. Its clear temper definition, stable mechanical properties, and excellent extrudability make it a key material in aluminum profile frameworks.
With extensive experience in aluminum profile supply, GNEE provides high-quality 6063-T5 aluminium alloy solutions tailored to automation equipment, construction projects, and industrial manufacturing worldwide.
