6066 T651 aluminum alloy is a member of the 6xxx series, based on Al-Mg-Si, developed for applications requiring high strength. The T651 temper includes solution heat treatment, stress relieving, and artificial aging processes. This results in high mechanical strength combined with good dimensional stability. It is especially preferred in aerospace, defense industries, and high-performance machinery components.

In terms of strength, 6066 T651 offers higher yield and tensile strength compared to 6061-T6 alloy. Although it does not reach the strength levels of 7075-T6, it provides better corrosion resistance and a more balanced performance. Compared to 6082-T6, it demonstrates higher strength and improved fatigue resistance. These characteristics make it reliable for load-bearing structural applications.

Regarding corrosion resistance, 6066 alloy performs better than 2xxx and 7xxx series alloys. It shows good resistance in atmospheric and humid environments. In terms of coatability, it is suitable for anodizing and other surface treatments, providing both aesthetic and protective benefits.

In terms of machinability and formability, 6066 T651 offers moderate performance. It is suitable for machining but has lower machinability compared to free-machining alloys like 2007 or 2011. Its bending capability is limited due to the T651 temper, and forming is usually performed before heat treatment. Weldability is weaker than 6061 and requires careful process control.

In terms of vibration and fatigue behavior, 6066 alloy provides high stability and durability. It performs well under dynamic loads, making it suitable for automotive, railway, and aerospace applications. It is widely used in structural components, fasteners, and parts exposed to high stress.

MATERIAL COMPOSITION STANDARDS

6066 T651 alloys are available according to the following standards:
• 6066 T651 Cold Drawn Round Bar; ASTM B211, UNS A96066, ISO AlMg0.7Si
• 6066 T651 Cold Drawn Tube; ASTM B211, UNS A96066, ISO AlMg0.7Si
• 6066 T651 Cold Drawn Wire; ASTM B211, UNS A96066, ISO AlMg0.7Si
• 6066 T651 Extruded Round Bar; AMS QQ-A-200/10, ASTM B221, UNS A96066, ISO AlMg0.7Si
• 6066 T651 Extruded Tube; AMS QQ-A-200/10, ASTM B221, UNS A96066, ISO AlMg0.7Si
• 6066 T651 Extruded Lamina; AMS QQ-A-200/10, ASTM B221, UNS A96066, ISO AlMg0.7Si
• 6066 T651 Extruded Wire; AMS QQ-A-200/10, ASTM B221, UNS A96066, ISO AlMg0.7Si
 

Characteristic Properties of 6066 T651:

• Strength: Medium-high (below 0°C)
• Machinability: Moderate
• Weldability: Moderate (Shielded Arc and Filled Welding Recommended)
• Forming: Very Good
• Corrosion Resistance: Very Good (improves with coating)
• Heat Treatment: Yes
   

Some Common Applications of 6066 T651:
In irrigation and piping systems,
In internal architectural elements,
In pneumatic fittings, and various other applications.
 

STOCK
We produce and supply 6066 T651 in the form of bars/lamina and tubes/profiles.

• Bars / Lamina
• Tubes / Profiles