7050 aluminum alloy
Dec 29, 2017


The 7050 is a high-strength heat-treatable alloy with extremely high strength and anti-stripping corrosion and anti-stress corrosion fracture properties.

Used in aircraft structural parts for heavy plate extrusion, free forging and die forging.

The requirements of manufacturing such parts are: anti-stripping corrosion and anti-stress corrosion cracking ability, fracture toughness and fatigue resistance.

7075 series aluminum alloys is the main alloy elements zinc, to add magnesium alloys containing 3% 75% zinc, can form the strengthening effect is remarkable MgZn2, make zinc aluminum alloy heat treatment effect than the binary alloy. Improve zinc magnesium content in alloy, tensile have to be to further improve the hardness, but its resistance to stress corrosion and spalling corrosion with the decrease of the ability. After heat treatment, can achieve very high strength characteristics. These materials are generally add a small amount of copper chromium alloy, etc. In the department at 7075-7651 aluminium alloy after taste, is praised as the most excellent products in aluminum alloy, high intensity, far more than mild steel. The alloy has good mechanical properties and the anode reaction. It is mainly used for aerospace, mould processing, machinery and equipment. Jig, especially used in aircraft manufacturing structure with high intensity and other requirements, strong corrosion resistance of high stress structure.

Chemical composition editing

Aluminum (Al) allowance

Chromium (Cr) of 0.04 or less

Zirconium (Zr) 0.08 ~ 0.15

Zinc (zinc) 5.7 ~ 6.7

Silicon (Si) of 0.12 or less

Iron (Fe) 0.000 ~ 0.150

Manganese (Mn) of 0.10 or less

Magnesium (Mg) 1.9 ~ 2.6

Titanium (Ti) of 0.06 or less

Copper (Cu) 2.0 ~ 2.6

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