The Typical Super-duralumin 7075 Aluminum for Sale

 7075 aluminum for sale is a typical aviation super-duralumin. It is not only an "old" AL-Zn-Mg-Cu alloy, but also a young alloy with strong "energy". This was the first finalized super duralumin, which was finalized in 1944. It was used to make airplanes in the United States, Japan, and the former Soviet Union. It is only 74 "years old" and is still in the "middle-aged" stage.

It is "young" because it is now the main material for the key structure of aerospace vehicles. It seems that super duralumin will only withdraw when composite materials can be produced in large quantities and the price is reduced to be competitive with super duralumin.

After more than 70 years of development, 7075 alloy has formed a considerable family. Now the commonly used alloys are 7075/7175/7475 alloys. 7275 alloys have been less used due to their unsatisfactory performance. 7375 alloys have been completely eliminated.

Among the 7075/7175/7475 alloys, 747 has the lowest impurity content. For example, the silicon content of 7475 alloy is only 25% of 7075 alloy, therefore it has higher toughness and better overall performance.

7075 aluminum alloy is an Al-Zn-Mg-Cu high-strength deformed aluminum alloy that can be heat-treated and strengthened. It is used to manufacture various structural parts, especially aerospace vehicle structural parts. It is the most widely used high-strength aluminum alloy today.

Its application range from C919 large aircraft front fuselage long truss, passenger observation window frame forgings, middle fuselage sheet bending and long truss, keel beam web, floor turning beam, middle and rear fuselage long truss to cell phone casings.

7075 grade aluminum has many tempers: T6, T73, T76 and T77. 7075 T6 Aluminum has the highest mechanical strength performance, but the fracture toughness is low and is sensitive to stress corrosion. Its toughness decreases with the decrease of temperature. Therefore, 7075 T6 aluminum is not suitable for manufacturing low-temperature structural parts and work pieces.

7075 thick aluminum plate and its extruded profiles will generate a lot of internal stress after quenching. They must be stretched before aging treatment to reduce them to the allowable range. Therefore, this kind of stretching is called pre-stretching. The pre-stretching amount is 1.5%~3%, otherwise serious deformation will occur.

Haomei is a big 7075 aluminum plate suppliers, providing free sample test and cooperate with many aircraft parts manufacturers at home and abroad. Welcome to leave message below to inquire it.

Original Source:https://www.aircraftaluminium.com/a/the-typical-super-duralumin-7075-aluminum-for-sale.html

5454 Aluminum Sheet for Car Wheels

 The wheel hub is the main supporting metal component of automobile tires. Aluminum alloy and steel are two common materials. Whether aluminum alloy wheels or steel wheels is better has been controversial. Let’s have a look together.

Steel wheel hub: It is of simple manufacturing process, low cost, low price and strong resistance to metal fatigue. However, steel wheels also have many obvious shortcomings such as heavy weight.

Steel wheels of the same size are much heavier than aluminum alloy wheels. This will inevitably lead to the large inertia of steel wheels. It is inferior to aluminum alloy wheels in braking, and it has poor heat dissipation and is not good-looking.

Aluminum wheel hub: Aluminum alloy wheels are much lighter in weight and have less inertial resistance. The thermal conductivity of 5454 aluminum plate about three times that of steel. The heat dissipation is much better than steel wheels, and it is easier to withstand the thermal decay of tires and braking system.

In the case of high-speed rotation, the deformation of aluminum wheel is small, making it easier for cars equipped with aluminum alloy wheels to drive straight, thus reducing the resistance caused by tire rolling.

In terms of appearance, the aluminum alloy wheel hub is appropriately added with metal elements such as manganese, magnesium, chromium, titanium, so that it has better plasticity, and can have different metallic luster depending on the proportion of addition. Its appearance is much better than that of steel wheel.

However, aluminum alloy wheels are not without disadvantages. Generally, the manufacturing process of aluminum wheel hub is complicated than that of steel wheels, so its price is much more expansive. Aluminum alloy wheels are not as rigid as steel wheels.

In short, aluminum alloy wheel hub is suitable for passenger cars for it is more energy-saving, comfortable, and safe. They have basically become the standard configuration of most passenger cars.

5454 aluminum plate belongs to aluminum-magnesium alloy, which is a common material for making wheels. Haomei Aluminum, one of the 5454 aluminum plate suppliers in China, can offer rich tempers and different specifications. Welcome to leave message below to inquire it.

Original Source:https://www.autoaluminumsheet.com/a/5454-aluminum-sheet-for-car-wheels.html