7075 is a representative ultra-high-strength aluminum alloy, classified under the Al-Zn-Mg-Cu system. As a non-modified, original wrought alloy with zinc as the primary alloying element, it is typically processed through cold forging techniques.
Renowned for its exceptional strength, 7075 aircraft-grade aluminum remains one of the strongest aluminum alloys in widespread use. Since its introduction to the aerospace industry in the late 1940s, it has been extensively utilized in the production of aircraft components and continues to serve as a key material in high-performance structural applications across the aviation sector.
Features
1.High Strength:
One of the highest-strength aluminum alloys available, comparable to many steels. Ideal for high-stress structural components.
2.Excellent Fatigue Resistance:
Outstanding performance under cyclic loading, making it suitable for aerospace and transport applications.
3.Good Machinability:
Easily machinable in the T6 and T73 tempers, allowing for precision component manufacturing.
4.Moderate Corrosion Resistance:
While corrosion resistance is not as high as 5000 or 6000 series alloys, 7075 offers reasonable resistance, especially in the T73 temper.
5.Heat Treatable:
Capable of achieving high mechanical properties through heat treatment, particularly in T6 and T651 conditions.
6.Lightweight:
Maintains a low density typical of aluminum (approx. 2.81 g/cm³), essential for aerospace weight-saving requirements.
7.Poor Weldability:
Generally not recommended for welding due to susceptibility to cracking, though specialized techniques may be used for certain applications.
8.Dimensional Stability:
Offers excellent stability and minimal distortion after machining and heat treatment.
Post time: May-12-2025