Compared with ordinary aluminum alloys, aluminum alloys used in aircraft have higher requirements for strength, hardness, toughness, fatigue resistance and plasticity. 7 series aluminum alloy has the highest hardness value among all aluminum alloys, so it is suitable for the aerospace field.
1. Duraluminum: Al-Mg-Cu alloys belongs to this kind. The most widely used are 2024, 2014, 2A12,etc.
2. Super hard aluminum: It refers to Al-Zn-Mg-Cu alloy. The common alloys are 7075, 7050, 7475, 7068, 7055, 7150,etc. They have high strength limit and yield strength, and can withstand large loads.
3. 3. Rust-proof aluminum alloy: They are usually aluminum-magnesium alloys 5052, 5A06, 5B05. They have high corrosion resistance and fatigue resistance.
4. Forged aluminum alloy: 6082 aluminum alloy is often used to make engine parts, joints, etc.
5. Cast aluminum alloy: It is with small specific gravity, high corrosion resistance and heat resistance, which is used for manufacturing engine casings, etc.
2024 aluminum alloy is a high-strength aluminum alloy with good corrosion resistance and wear resistance. Its density is low, only 2.7g/cm3, and it has high strength and hardness. The tensile strength is between 100-130MPa and the elongation is between 20%-30%.
2024 aluminum sheet is a commonly used material 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.
7075 aluminum alloy is a cold-processed forged alloy with high strength, much better than mild steel. 7075 is one of the commercially available strong alloys. It has general corrosion resistance, good mechanical properties and anodic reaction. Fine grains allow for better deep drilling performance, enhanced tool wear resistance and distinctive thread rolling.
It is applied in aerospace industry, blow molding (bottle) mold, ultrasonic plastic welding mold, golf ball head, shoe mold, paper mold, foam molding mold, dewaxing mold, template, fixture, mechanical equipment, mold processing and bicycle frames.
7075 aluminum alloy feature
1. High strength heat treatable alloy.
2. Good mechanical properties.
3. It has good practicality.
4. Easy to process and good wear resistance.
5. Good corrosion resistance and oxidation resistance.
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Original Source:https://www.aircraftaluminium.com/a/2024-and-7075-aluminum-alloys.html
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