Aviation aluminum is light in weight and has a remarkable lightweight effect. It has replaced steel and occupies the dominant position of current aviation materials. Aviation aluminum still has high strength and toughness at temperatures below 150°C, making it an ideal aircraft structural material.
1. What is the material of aviation aluminum ?
In addition to aluminum, the main material of aviation aluminum is zinc, magnesium and copper.
Alloy Classification of Aviation Aluminum
Aluminum alloys used in aircraft structures in various countries in the world today are mainly ultra-high-strength 7000 series (7075, 7475, 7050, 7A04, etc.), high-strength 2000 series (2024, 2017, 2A12, etc.), some 5000 series (5A06, 5052, 5086, etc.) 5052, 5086, etc.), 6000 series (6061, 6082, etc.) and a small amount of other series of aluminum.
2. what is the difference between aviation aluminum and ordinary aluminum ?
① First of all, the material is different.
The main choice for aviation aluminum is the 7000 series and 2000 series of aluminum alloy profiles or plate, and the common aluminum materials are generally 1000 series, 3000 series and 6000 series aluminum alloy, especially 6061 alloy is a popular construction and industrial aluminum profile.
② At the same time, there are differences in performance and hardness.
The 7 series aluminum materials have the highest hardness and can be used in the aerospace field. The aluminum alloy of the 1000, 3000, 6000 series has a medium hardness, which can meet the needs of life.
③ The cost is also different, the selected materials are different, and the cost is also different.
If the hardness is higher, it is more difficult to form, and the production process is more advanced.
In the market, the cost of aviation aluminum profiles is higher. The corrosion resistance of aviation aluminum alloy is not enough, and special surface treatment must be carried out, which increases the cost.
ordinary aluminum, the most commonly used is 1050, 1100, 3003, 6061 or 6063, with medium hardness, extrusion molding, and low production cost.
④ Different processing performance.
Aluminum alloy profiles cannot be welded, but can only be connected by other means. Ordinary aluminum can be welded, so it has a wider range of applications.
⑤ Different corrosion resistance.
The corrosion resistance of aviation aluminum is relatively poor, and the surface can only achieve a certain degree of corrosion resistance after a special process treatment. However, the ordinary aluminum alloy itself has certain corrosion resistance, and the oxidation treatment is added, which can greatly improve the oxidation performance.