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Aluminum7075 T6 and 2024 T3 Sheet

2024 aluminum sheet is a commonly used aluminum sheet in the current aircraft manufacturing process. It not only has high plasticity, but also has many advantages such as fatigue expansion resistance, heat resistance, and fracture toughness. 2024 aluminum alloy is mainly used in aircraft structures that require high strength, such as fuselage, wings, webs, etc.

2024 t3 sheet was introduced by Alcoa in 1931. Its Ai-Cu-Mg structural composition allows its yield strength to reach 5ksi, replacing 2017-T4 as the main 2-series aerospace alloy. Under normal circumstances, after T3 state heat treatment, the hardness of 2024 aluminum alloy is about HB120. After more stringent T351 or T4 heat treatment, the hardness may be higher, reaching around HB140.

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7075 aluminum alloy has an excellent strength-to-weight ratio, making it ideal for use in critical components such as helicopter rotor blades, engine mounts and other structural elements of aircraft. This special alloy is also widely used in the manufacture of military aircraft due to its high strength properties.

Zn is the main alloy element in 7075. Adding magnesium to an alloy containing 3%-7.5% zinc can form MgZn2 with significant strengthening effect, making the heat treatment effect of this alloy far better than that of Al-Zn binary alloy. Increasing the zinc and magnesium content in the alloy will further increase the tensile strength, but its ability to resist stress corrosion and spalling corrosion will decrease.

Generally speaking, the development direction of aluminum alloy is from high strength and low toughness to high strength and high toughness and then to high strength, high toughness and corrosion resistance. The development of heat treatment state is from T6 to T73 to T76 to T736 to T77. The alloying degree is getting higher and higher, the content of impurities such as Fe and Si is getting lower and lower, and the addition of trace transition elements is becoming more and more reasonable, which ultimately improves the overall performance of the alloy.
The tempers of 7075 aluminum include O temper, T6, T651, T73, T7351 and T76511. 7075-T6 has the highest mechanical strength properties, but low fracture toughness. It is sensitive to stress corrosion, and because its toughness decreases with decreasing temperature, it is not suitable for manufacturing low-temperature structural parts and workpieces. Welcome to leave message below to inquire aluminium 7075 t6 price.


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