What is the difference between aviation aluminum alloy and ordinary aluminum alloy?

Compared with ordinary aluminum alloys, aluminum alloys used in aircraft have higher requirements for strength, hardness, toughness, fatigue resistance, and plasticity.　　 There are many kinds of aluminum alloys used in airplanes.　　 1. Duralumin: aluminum-magnesium-copper alloy. The most widely used aluminum alloy in the aviation industry. Commonly used 2024, 2A12, 2017A, strength, toughness, fatigue resistance, good plasticity. Used to make skins, bulkheads, wing ribs, etc.　　2. Super hard aluminum: aluminum-zinc-magnesium-copper alloy. Commonly used 7075, 7A09, the ultimate strength and yield strength, high load, used to make the upper wing surface skin, beams, etc.　　 3. Anti-rust aluminum alloy: commonly used aluminum-magnesium alloy 5A02, 5A06, 5B05. It has high corrosion resistance, fatigue resistance, good plasticity and weldability. Used to make mailboxes, oil pipes, etc.　　 4. Forged aluminum alloy, commonly used 6A02, has high hardness and good corrosion resistance. Manufacturing engine parts, joints, etc.　　 5. Cast aluminum alloy, low specific gravity, high corrosion resistance and heat resistance, manufacture engine casings, etc.