• 21 April 2024

The properties and uses of aluminum depend on the type of alloy. Today we will tell you what characteristics PA11 aluminum has and where it is especially used.

What is aluminum ?

Hydrated aluminum oxide, better known as bauxite ore, is mined and refined to extract aluminum. Once extracted from bauxite, pure aluminum is often too soft and malleable for industrial use. For this reason, aluminum is almost always combined with other metals or elements. These usually include copper, magnesium, manganese, silicon, tin and/or zinc. By creating an alloy of aluminum and metal, the overall strength of the metal is improved, as well as many other various physical properties. So when you come across everyday items such as aluminum cans, cooking foil or food packaging, keep in mind that you are not actually coming into contact with pure aluminum, but rather aluminum alloys, which consist of 90 to 99% metallic aluminum.

How is aluminum formed?

So aluminum does not occur naturally in its pure form. To recover aluminum from bauxite, two processes are needed: the first is the Bayer process (1886), and the second is the Hall-Process of Héroult (1889). Since bauxite consists of aluminum oxide, water molecules and a number of impurities, these must first be removed. The raw bauxite is then crushed, mixed, ground and turned into a suspension. This suspension is then subjected to heat and pressure to purify the residual bauxite and leave the aluminum oxide itself.

Still, pure aluminum is soft. Therefore, it is melted and mixed with other elements such as iron, silicon, copper, magnesium, manganese and zinc. Adding alloys to these other elements improves the properties of aluminum, such as strength, density, workability, electrical conductivity and corrosion resistance.

What is PA11 aluminum?

Aluminum PA11 is an alloy in which magnesium is the main additive, supplemented with small amounts of chromium and/or manganese. It has good formability in the soft, annealed state and can be hardened by crushing to fairly high strength levels. It is slightly stronger, but less ductile than alloy 5052. So what is PA11 aluminum used for? The properties of this alloy make it applicable to automotive and construction applications.

Aluminum PA11 - properties

Aluminum PA11 is a metal alloy with a wide range of applications. It is characterized by high resistance to corrosion, to heat, making it ideal for many applications. So what are the characteristics of PA11 aluminum. The properties of the alloy are:

- Tensile strength:160 - 200 MPa.

- Brinell hardness: 44HB.

- Density: 2.66 kg/m 3.

- Melting point: 600°C.

- Thermal conductivity: 147 W/mK.

Aluminum PA11 has become a popular material precisely because of its versatility. It is known for its high strength-to-weight ratio and exceptional corrosion resistance, making it an excellent choice when it comes to structural and engineering components. Where else can we find PA11 aluminum. The alloy's properties have been appreciated in structures such as bridges and railroads, but also in everyday items such as bicycles, but also aircraft components. This unique alloy is also useful in a variety of industries, from appliance manufacturing to food preparation. Aluminum PA11 has many advantages that make it attractive.

Corrosion resistance is another advantage that PA11 aluminum has. The use of the alloy because of this property is advantageous wherever parts are exposed to elements such as salt water or corrosive liquids.

Another great advantage of this type of aluminum is its excellent heat resistance. It can withstand temperatures up to 600 degrees Celsius without sacrificing its strength and durability, making it ideal for use in high-temperature environments such as ovens and stoves. And because it is lightweight and non-magnetic, PA11 aluminum is often used in aerospace applications where weight savings are important.

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