GNEE 7075 aluminum is a high-strength, zinc-based aluminum alloy recognized for its outstanding strength-to-weight ratio. It is widely selected for demanding aerospace, military, and structural applications, offering strength comparable to certain steels while remaining significantly lighter. However, this high strength comes with lower inherent corrosion resistance and limited weldability. Typical uses include aircraft wings, fuselages, landing gear, and other heavily loaded components where lightweight performance is critical.
Key Characteristics
High Strength
One of the strongest aluminum alloys available, particularly in T6 and T7 tempers, providing excellent tensile and yield strength.
Chemical Composition
Primarily aluminum, alloyed with zinc (5.1–6.1%), copper (1.2–2.0%), and magnesium (2.1–2.9%).
Lightweight Performance
Exceptional strength-to-weight ratio, making it especially valuable for aerospace applications.
Machinability
Ranges from fair to good, depending on the selected temper.
Weldability
Generally poor; welding is typically not recommended.
Corrosion Resistance
Lower than alloys such as 6061, although over-aged tempers like T73 provide improved resistance to stress corrosion cracking.
Common Applications
Aerospace: Aircraft structural components, fuselages, wings, landing gear
Military: Ordnance and high-stress components for military aircraft
Sports Equipment: Lacrosse sticks, precision firearm components, high-performance bicycle parts
Mold Manufacturing: Plastic molds requiring high strength and excellent surface polishability
Typical Tempers (Heat Treatments)
T6: The most commonly used temper, offering very high strength for structural applications
T73 / T7351: Over-aged tempers designed to enhance stress corrosion cracking resistance, often used to replace lower-strength alloys such as 2024 in critical service conditions
GNEE 7075 aluminum is a high-strength, zinc-based aluminum alloy recognized for its outstanding strength-to-weight ratio. It is widely selected for demanding aerospace, military, and structural applications, offering strength comparable to certain steels while remaining significantly lighter. However, this high strength comes with lower inherent corrosion resistance and limited weldability. Typical uses include aircraft wings, fuselages, landing gear, and other heavily loaded components where lightweight performance is critical.
Key Characteristics
High Strength
One of the strongest aluminum alloys available, particularly in T6 and T7 tempers, providing excellent tensile and yield strength.
Chemical Composition
Primarily aluminum, alloyed with zinc (5.1–6.1%), copper (1.2–2.0%), and magnesium (2.1–2.9%).
Lightweight Performance
Exceptional strength-to-weight ratio, making it especially valuable for aerospace applications.
Machinability
Ranges from fair to good, depending on the selected temper.
Weldability
Generally poor; welding is typically not recommended.
Corrosion Resistance
Lower than alloys such as 6061, although over-aged tempers like T73 provide improved resistance to stress corrosion cracking.
Common Applications
Aerospace: Aircraft structural components, fuselages, wings, landing gear
Military: Ordnance and high-stress components for military aircraft
Sports Equipment: Lacrosse sticks, precision firearm components, high-performance bicycle parts
Mold Manufacturing: Plastic molds requiring high strength and excellent surface polishability
Typical Tempers (Heat Treatments)
T6: The most commonly used temper, offering very high strength for structural applications
T73 / T7351: Over-aged tempers designed to enhance stress corrosion cracking resistance, often used to replace lower-strength alloys such as 2024 in critical service conditions
