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7A09 as known as the Al-Zn-Mg-Cu series of highest strength aluminum. It has been used in the aircraft industry in the late 1940s and is still widely used in the aviation industry. It is characterized by good plasticity after solution treatment, particularly good heat treatment strengthening effect, high strength below 150℃, and particularly good low temperature strength; Poor welding performance;

The plasticity in the annealed and as-quenched state is a little bit lower than 2A12 in the same state. Stress corrosion is better than 7A04.

Applications

7A09 is mainly used to manufacture aircraft structures and other high-stress structural parts that require high strength and corrosion resistance, such as aircraft lower wing panels, stringers, etc. After solution treatment, the plasticity is good, the heat treatment strengthening effect is good, it has good strength below 150 degrees, and has particularly good low temperature strength, poor welding performance, and stress corrosion cracking tendency. It is also widely used in mold processing, mechanical equipment, tooling and fixtures, aerospace industry, blow molding (bottle) molds, ultrasonic plastic welding molds, golf heads, shoe molds, paper molds, foam molding molds, dewaxing molds, machinery Equipment for making high-end aluminum alloy bicycle frames. It used for the first time as the body material of the smartphone OPPO.

Specification of 7A09 Aluminum Alloy

Chemical Composition of 7A09 Aluminum Alloy

Mechanical & Physical Properties of 7A09 Aluminum Alloy