7075 alloy

7 series aluminum alloy is another commonly used alloy, a wide variety. It contains zinc and magnesium. The most common strength of the aluminum alloy is the 7075 alloy, but it can not be welded, and its corrosion resistance is quite poor , A lot of CNC cutting parts are made of 7075. Zinc in this series is the main alloying elements, together with a little magnesium alloy materials can be heat treated to achieve very high strength properties. This series of materials are generally joined a small amount of copper, chromium and other alloys, of which the number 7075 aluminum alloy is particularly top grade, the highest strength, suitable for aircraft frame and high strength parts.


7 series aluminum alloy Al-Zn-Mg-Cu super-hard aluminum alloy is the ultra-high-strength deformation aluminum alloy that 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 and particularly good heat treatment strengthening effect, high strength below 150 ° C and particularly good low temperature strength; poor weldability; stress corrosion cracking tendency; aluminum clad or other Protection processing used. Two-stage aging can improve the ability of the alloy to resist stress corrosion cracking. The plasticity in the annealed and as-quenched state is slightly lower than that in the same state 2A12. Slightly better than 7A04, the static fatigue of the plate. Notch sensitivity, stress corrosion resistance is better than 7A04. The density of 2.75g / cm3.