7xxx series aluminum alloys are aluminum alloys with zinc as the main alloying element, belonging to heat-treatable aluminum alloys If magnesium is added to the alloy, it becomes an Al-Zn-Mg alloy, which has good thermal deformation performance, a wide range of quenching, and can achieve strength under appropriate heat treatment conditions. It has good welding performance, generally has good corrosion resistance, has a certain tendency of stress corrosion, and is a high-strength weldable alloy. Al-Zn-Mg-Cu alloys are developed on the basis of Al-Zn-Mg alloys by adding Cu, and their strength is higher than of 2xxx series aluminum alloys. They are generally called ultra-high-strength aluminum alloys. The alloy's yield strength is close to its tensile strength, a high ratio of yield strength to tensile strength and a high specific strength, but its plasticity and high-temperature strength are low. It is suitable for load-bearing components at room temperature and below 120 degrees. The alloy is easy to process, has good corrosion resistance and high toughness. This series of alloys is widely used in aerospace field and has become one of the most important structural materials in this field.
Currently produced 7 series aluminum alloy brands: 7003 705 7046 7075
