7A09 aluminum bar rod

Jun 16, 2023

7A09 aluminum bar rod belongs to Al Zn mg Cu superhard aluminum. This alloy has been used in aircraft manufacturing since the late 1940s and is still widely used in aviation industry. It is characterized by good plasticity after solution treatment, especially good heat treatment strengthening effect, high strength below 150 ℃ and particularly good low temperature strength; Poor welding performance; Stress corrosion cracking tendency; It needs to be coated with aluminum or other protective treatment. Double aging can improve the stress corrosion cracking resistance of the alloy. The plasticity of 7A09 aluminum bar rod is slightly lower than 2A12 in the same state and slightly better than 7A04 aluminum bar. The static fatigue and notch sensitivity of the plate are better than 7A04.

Density: 2.90g/cm³.
Shear strength: alloy (bare) and clad aluminum alloy, O state: 152MPa (22ksi); alloy (bare) T6, T7451 state: 331MPa (48ksi); clad aluminum alloy T6, T7451 state: 317MPa (46ksi)
Hardness: O state: 60HB; T6, T651 state: 150HB;

7A09 aluminum bar rod is mainly used to manufacture aircraft structures and other high stress structural parts requiring high strength and corrosion resistance, such as aircraft upper and lower wing wall panels, stringers, etc. it has good plasticity after solution treatment, good heat treatment strengthening effect, good strength below 150 ℃, especially good low temperature strength and poor welding performance, It has the tendency of stress corrosion cracking. It is also widely used in mold processing, mechanical equipment, tooling fixtures, aerospace industry, blow molding (bottle) mold, ultrasonic plastic welding mold, golf head, shoe mold, paper plastic mold, foam molding mold, dewaxing mold, mechanical equipment, and used to make high-end aluminum alloy bicycle frame. It will be used as the body material of smartphone oppo N3 for the first time in 2014.

chemical composition