Product introduction
Ultra hard aluminum alloy, high strength, good wear resistance
7A09 belongs to the Al Zn Mg Cu series ultra hard aluminum alloy, which has been widely used in the aircraft manufacturing industry since the late 1940s and is still widely used in industry today. Its characteristics are good plasticity after solution treatment, particularly good heat treatment strengthening effect, high strength below 150 ℃, and particularly good low-temperature strength; Poor performance; There is a tendency for stress corrosion cracking; It needs to be treated with aluminum or other protective measures for use. Double stage aging can improve the ability of alloys to resist stress corrosion cracking. The plasticity of the annealed and quenched state is slightly lower than that of 2A12 in the same state, slightly better than 7A04, and the static fatigue and notch stress corrosion resistance of the plate is better than 7A04.
