7068 T6511 aluminum alloy belongs to the Al-Zn-Mg-Cu based 7000 series and is one of the highest strength aluminum alloys available commercially. The T6511 temper includes solution heat treatment, stress relieving by stretching, and artificial aging. This temper is specifically designed to provide high dimensional stability and maximum mechanical performance, particularly in extrusion products.

In terms of corrosion resistance, 7068 T6511 has limited general corrosion resistance, similar to other high-strength 7000 series alloys. It performs at a level comparable to 7075-T6 but requires careful consideration regarding stress corrosion cracking (SCC). Compared to 7050 alloys, its SCC resistance is lower. Therefore, anodizing or protective coatings are recommended in aggressive environments.

Regarding strength and mechanical properties, 7068 T6511 provides some of the highest tensile and yield strength values among aluminum alloys. It offers significantly higher strength than 7075-T6. However, this high strength comes with reduced toughness and ductility. Compared to 2024 and 7050, it offers much higher strength but lower crack tolerance.

In terms of machinability, bendability, and weldability, 7068 T6511 has moderate machinability, but tool wear is higher due to its strength. Its weldability is very limited and generally not recommended. Its bending capability is low, and forming operations are typically performed before heat treatment. Being used in extrusion products, it provides advantages in geometric accuracy and stability.

Regarding coating ability, vibration behavior, and applications, 7068 alloy is suitable for anodizing and hard coating processes, although its decorative surface quality is limited. Its vibration damping capacity is low. Main application areas include defense industry, aerospace, motorsports, high-performance mechanical components, and critical load-bearing parts. 7068 T6511 is often used as a lightweight alternative to steel in applications requiring maximum strength.

STANDARDS OF MATERIAL COMPOSITION

7068 T6511 can be produced according to the following standards.
• 7068 T6511 Extruded Round Bar; AMS 4331, ASTM B221  
• 7068 T6511 Extruded Bar; AMS 4331, ASTM B221  
• 7068 T6511 Extruded Wire; AMS 4331, ASTM B221  
 

Key Characteristics of 7068 T6511: 

• Strength: Excellent
• Machinability: Average
• Weldability: Poor
• Formability: Moderate
• Corrosion Resistance:  Good 
• Heat Treatment: Yes
   

Some Well-Known Applications for 7068 T6511: 
Critical structural components in aerospace (aircraft fuselage, wing attachment elements)
High-strength, lightweight armor plates and carrier components in defense industry
High-performance suspension, frame, and linkage components in automotive sector
Applications in sports equipment (e.g., high-performance bicycle frames) and industrial machinery parts where a high strength-to-weight ratio is required
 

STOCK
7068 T6511 is supplied in rod/bar form.

• Rod / Bar