7A09 aluminum alloy is a high-strength alloy, and the ductility of annealing and quenching in the same state is slightly lower than 2Y12 and slightly better than 7A04. After quenching and artificial aging, the plasticity of 7A09 aluminum alloy is significantly reduced, and the static fatigue, notch sensitivity and stress corrosion resistance of 7A09 aluminum alloy are slightly better than 7A04.
Chemical Composition(%)
Al: margin
Si ：≤0.50
Cu: 1.2～2.0
Mg: 2.0～3.0
Zn: 5.1～6.1
Mn: ≤0.15
Ti ：≤0.10
Cr: 0.16～0.30
Fe: 0.000～0.500
Al: margin
Si ：≤0.50
Cu: 1.2～2.0
Mg: 2.0～3.0
Zn: 5.1～6.1
Mn: ≤0.15
Ti ：≤0.10
Cr: 0.16～0.30
Fe: 0.000～0.500
