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Zinc is the main alloying element of the 7-series aluminium alloys, and the addition of magnesium to alloys containing 3 to 75% zinc leads to the formation of reinforced alloys. the significant effect of MgZn2 makes the heat treatment of this alloy far superior to that of Al-Zn binary alloys. Inasing the content of zinc and magnesium in the alloy must further inase the tensile hardness, but its resistance to stress corrosion and stripping corrosion will dease with age. Very high strength properties can be obtained by heat treatment. Smaller amounts of copper-chromium and other alloys are usually added to the series. 7050-T7451 aluminum alloy is the best aluminum alloy in the series and is considered to be the strongest. Mild steel. This alloy has good mechanical properties and anodic reaction. It is mainly used in aerospace, tooling, machinery and equipment, jigs and fixtures, especially aircraft structures and other high stress structures where high strength and corrosion resistance are required. It is particularly used in aircraft construction and other high stress structures where high strength and corrosion resistance are required.
Series 7 aluminum plates have high strength, higher than mild steel, good plasticity after solid solution treatment, high strength up to 150°C and high low temperature strength. Due to the fine-grain structure in Series 7 aluminum alloys, they have excellent deep-drilling properties, enhanced tool wear resistance, good metal mechanical properties, and anodic response. Currently, 7-series aluminum sheet is the metal of choice for lower density and higher hardness requirements at lighter weights. It is one of the most likely alloys for commercial use. It is widely used in shoe molds, high hardness molds, high end cell phone cases, thick plates, heavy forged and golf parts, precision parts and aircraft. Manufacturing.

Applications
Series 7 aluminum sheet is primarily used in the aerospace industry, but can also be used in other applications where high strength aluminum is required. Aircraft structural components. Used for extrusion, free forging and die forging of thick plates. They can also be used in various dies, fixtures, machinery and high-end aluminum bicycle frames.
7 series aluminum plates have high strength and high corrosion resistance, and are now widely used in products such as upper and lower wings, trusses and spacers for the manufacture of aircraft, precision parts, golf parts, etc.
The application of aluminum sheets with thick curing medium.