Alloy 7075 Aluminium is a high-strength alloy that is famous for its great mechanical properties and it is applied widley as constructions and even in aircraft components. Compositionally composed mainly from aluminum using zinc, magnesium, and copper as the additions, the high ratio of weight to strength is spectacular. The different grades (e.g. 7075-T6 and 7075-T651) of this alloy have been developed with particular characteristics of individual properties in mind best fit for pertinent needs. The most common alloy of this type are the alloy 7075-T6 and alloy 7075-T651, known for their superior strength and Graphs showing tensile strength, yield strength, and elongation, are a plus in material selection and design process. Documents like material data sheets, tables and chart give a quite comprehensive information about its chemical composition, mechanical properties and ways of processing for usage in different sectors of industries competently and accurately.
Aluminum alloy 7075 is famous for its excellent strength-to-weight ratio and various industries, especially the aerospace and high-stress industries, applies it because of this. Aluminum, zinc, magnesium, and copper are majorly the main compounds in which sometimes chromium and some other elements are also added. The more accurate composition changes slightly with regard to the manufacturer and the resulting properties. Standard tables have information on the tolerance level, mechanical properties and recommended applications for different forms and shape such as heat treatment, precipitation, shot peened etc Alloy 7075. Engineers and manufacturers use these tables for selecting the appropriate material suited for their specific needs which will in return ensure optimum performance and durability.
Elements | Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti | Others-Each | Others Total | Al |
---|---|---|---|---|---|---|---|---|---|---|---|
Min (%) | - | - | 1.2 | - | 2.1 | 0.18 | 5.1 | - | - | - | - |
Max (%) | 0.4 | 0.5 | 2 | 0.3 | 2.9 | 0.28 | 6.1 | 0.2 | 0.05 | 0.15 | Remainder |
Advantages:
Heat Treatable: Can be heat treated to achieve high strength and hardness.
Lightweight: High strength-to-weight ratio, suitable for aerospace and space applications.
Corrosion Resistance: Very good resistance to atmospheric corrosion.
Machinability: Machinable with relative ease.
Disadvantages:
Stress Corrosion Cracking: Not very resistant to stress corrosion cracking under certain conditions.
Cost: Relatively high compared to other aluminium alloys.
Surface Appearance: Machining may produce oxidation on the surface, affecting appearance.
Weldability: Challenges may be encountered during welding processes.
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