High strength aluminum alloys are mainly used in aircraft body structural components, including fuselage/wing skins, fuselage/wing long spars, wing/tail ribs, wing/tail wing spars, fuselage bulkheads and other main structures. Heat-resistant aluminum alloys are mainly used in aircraft high-temperature area structures, such as engine compartments, air conditioning system structures, etc. Corrosion-resistant aluminum alloys are mainly used in aircraft kitchens, toilets and environmental control system structures.
Aircraft manufacturers use high-strength alloys (mainly alloy 7075) to strengthen aluminum aircraft structures. 7075 aluminum plate China has copper (1.6%), magnesium (2.5%) and zinc (5.6%) for ultimate strength, but the copper content makes it very difficult to weld. On the other hand, it has a very good anodizing effect.
7050 alloy is a high-purity super-hard aluminum, which not only has low content of impurities Fe and Si, but also low content of Mn. 7050 aluminum plate is developed on the basis of 7075 aluminum alloy. 7050 alloy is mainly used in aircraft to manufacture main load-bearing structures that require high strength, high stress corrosion and exfoliation corrosion resistance and good fracture toughness, such as fuselage frames.
2024 aluminum plate is a typical hard aluminum alloy in the aluminum-copper-magnesium system, and is commonly used in T3 and T4 states. Its composition is relatively reasonable, and its comprehensive performance is good. It is the largest amount used in hard aluminum. This alloy thick plate is mainly used in fuselage, wings, shear ribs and webs, as well as other structural parts with high strength requirements.
The derivation of 2024 alloy is to develop towards high purification while keeping the main alloy elements roughly unchanged, so as to improve the plasticity, toughness and strength of the alloy. By reducing the Fe and Si impurity content in 2024 alloy, new alloys such as 2124, 2224, and 2524 have been studied successively.
Generally speaking, the development direction of aircraft grade aluminum sheets is from high strength and low toughness to high strength and high toughness and then to high strength, high toughness and corrosion resistance. The heat treatment state development has developed along the lines of T6 to T73 to T76 to T736 to T77.
The degree of alloying 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. Welcome to inquire aircraft aluminum price from us.
Original Source:https://www.aircraftaluminium.com/a/what-are-the-main-aircraft-aluminum-alloys.html
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