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7 series aluminum alloy belongs to al-zn-mg-cu series superduralumin, which 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 solid solution treatment, especially good heat treatment strengthening effect, high strength below 150℃, and especially good low temperature strength;Poor welding performance;Have stress corrosion cracking tendency;Poor corrosion resistance requires aluminum coating or other surface treatment.The resistance of the alloy to stress corrosion cracking can be improved by two-stage aging.



Chemical composition of 7075 T6 cold-drawn seamless tube
Silicon Si: 0.40 Fe:0.50 Cu: 1.2-2.0 Mn: 0.30 Mg: 2.1-2.9 Cr: 0.18-0.28
Zn: 5.1-6.1 Ti: 0.20 Al: margin other: single: 0.05 total: 0.15
Use of 7075 T6 cold-drawn seamless tube
The variety state and variety of 7075 are divided into plate, medium thick plate, bar, type, row, wire, rolled or cold working bar, seamless tube, cold working wire.The states are O, T6, T651, T6511, T73, T74, T7351, T7651, and T76511.Typical USES: aerospace industry, blow molding (bottle) mold, ultrasonic welding mold, golf head, shoe mold, paper mold, foam molding mold, wax mold, fixture, mechanical equipment, sports equipment, police equipment, etc.