Mechanical properties of 7075-T651 aluminum sheet

- Oct 15, 2018-

7075 aluminum plate is a cold-treated forging alloy with high strength and high hardness, far better than mild steel. 7075 aluminum plate is one of the most powerful alloys in the industry, with common corrosion resistance, good mechanical properties and anode reaction. The fine grain makes the deep drilling performance better, the tool wear resistance is enhanced, the thread rolling is different from the weight, and the preferred metal material with higher hardness requirements and higher hardness requirements.

7075 aluminum plate is characterized by good plasticity after solution treatment, particularly good heat treatment strengthening effect, high strength below 150 °C, and particularly good low temperature strength; poor welding performance; stress corrosion cracking tendency; Or other protection processing. Two-stage aging improves the ability of the alloy to resist stress corrosion cracking. This alloy has good mechanical properties and anodic reaction and is a typical aluminum alloy material for aerospace military.

Zinc is the main alloying element in 7075. Magnesium is added to the alloy containing 3%-7.5% zinc, which can form MgZn2 with remarkable strengthening effect, which makes the heat treatment effect of the alloy far better than the aluminum-zinc binary alloy. Increasing the zinc and magnesium content in the alloy will further increase the tensile strength, but its resistance to stress corrosion and flaking corrosion will decrease. Subject to heat treatment, very high strength properties can be achieved. 7075 materials are generally added with a small amount of copper, chromium and other alloys. Among them, 7075T651 aluminum alloy is especially top grade. It is known as the best product in aluminum alloy, with high strength and far better than any mild steel.

7075 T651