The difference between aeronautic and astronautic aluminum alloy and ordinary aluminu
aluhm > 01-10-2018, 10:00 AM
Al letter cnal.com is a kind of ultra-high strength deformation aluminum alloy, which is widely used in aviation industry. It has good mechanical and processing properties, good plasticity after solid solution treatment, good heat treatment effect. Generally, it has high strength and toughness at 150 degrees (or even higher), and it is an ideal structural material.
Compared with ordinary aluminum alloy, the aluminum alloy used for aircraft has high requirements for strength, hardness, toughness, fatigue resistance and plasticity. Because of the light quality of the aeronautical aluminum and the remarkable effect of light weight, the steel has been replaced and the dominant position of the current aviation materials is occupied. The requirements of the aeronautical equipment to aluminum are high, which is an important high-end application market for aluminum.
There are many kinds of aluminum alloys used on aircraft. The aircraft structure of the world with Aluminum Alloy is mainly 2 high strength (2024, 2017, 7, 2A12) and ultra high strength (7075, 7475, 7050, 7A04), there are also some 5 lines (5A06, 5052, 5086) and 6 (6061, 6082) and a few other series of aluminum.
Aerospace aluminum is mainly used in the wing skin, wing stringer, spar upper and lower edge, web, fuselage stringers, seat rails, keel beam, side frame, the lower part of the fuselage, the fuselage skin panels, flooring and other parts of the main beam.
1, hard aluminum: aluminum, magnesium and copper alloy. The most widely used aluminum alloy in the aviation industry. Commonly used 2024, 2A12, 2017A, strength, toughness, anti fatigue better, good plasticity. It is used to make skin, frame, fin, etc.
2, superhard aluminum: aluminum, zinc, magnesium and copper alloy. Commonly used 7075, 7A09, the strength limit and yield strength is high, bear load, used to make wing upper wing skin, beam and so on.
3. Antirust aluminum alloy: 5A02, 5A06, 5B05 of aluminum and magnesium alloys. It has high corrosion resistance, fatigue resistance, good plasticity and weldability. It is used to make mailboxes, oil pipes and so on.
4, forging aluminum alloy, commonly used 6A02, high hardness, with good corrosion resistance. Make engine parts, joints and so on.
5. Casting aluminum alloy, small proportion, high corrosion resistance, high heat resistance, engine casing and so on.