Aluminum's density is a fundamental property that contributes to its wide application
The density of aluminium is a fundamental property that contributes to its widespread use. Densitatea sa scăzută îl face o alegere preferată pentru structurile ușoare, eficiență îmbunătățită a combustibilului și impact redus asupra mediului.
Density tables for different aluminium alloys highlight the diverse options available to different industries, demonstrating the adaptability and versatility of this extraordinary metal.
Factors affecting aluminium density
Alloying elements: The density of aluminium alloys can change due to the addition of alloying elements. Cupru, magnesium and silicon are common elements that can alter the density of aluminium alloys and enhance their specific properties.
Heat treatment: Different heat treatment processes can alter the density of aluminium alloys. Annealing, quenching and precipitation hardening techniques can affect the arrangement of atoms and lead to changes in density.
Table of densities of different aluminium alloys
In order to provide a comprehensive reference, a table showing the densities of various aluminium alloys is provided. The data have been compiled from the above sources and other reputable references:
Aliaj | Densitate |
|
(g/cm³) | livrem / în3 | |
Aluminiu 1100 | 2.710 | 0.098 |
Aluminiu 2024 | 2.780 | 0.100 |
Aluminiu 3003 | 2.730 | 0.099 |
Aluminiu 4047 | 2.660 | 0.0961 |
Aluminiu 5052 | 2.680 | 0.097 |
Aluminiu 5083 | 2.660 | 0.096 |
Aluminiu 6061 | 2.700 | 0.098 |
Aluminiu 7075 | 2.810 | 0.101 |
Aluminiu 8011 | 2.710 | 0.097 |
(Notă: The values provided are approximate and may vary slightly depending on the specific manufacturing process and composition.)
From the above table, we can see that the density of aluminum of different alloys is different:
1. 5xxx and 6xxx series alloys are the lightest, because magnesium is the lightest of the main alloying elements
2. De exemplu, the density of the 1xxx series alloys is closer to that of pure aluminum; in fact, alloys in this series are considered to be 99% pure commercial aluminum.
3. Alloys in the 7xxx series and 8xxx series can produce densities as high as around 2.9 kg/m3. Aluminiu 7075, in particular, has a density of 2.81 g/cm³, which is higher than other alloys. As such, 7075 aluminum offers one of the highest strength aluminums available (its ultimate tensile strength is almost double that of the popular 6061 aluminiu).
4. 4xxx series alloys (whose main alloy composition is silicon) can produce a density lower than that of pure aluminum by 2.7 g/cm³. In certain amounts, silicon causes a reduction in the specific gravity of aluminum.
5. 3xxx series alloys (whose main alloying component is manganese) can produce a density slightly higher than that of pure aluminum, care este 2.7 g/cm³. The density of manganese tells that of aluminum.
This page will tell you ‘De ce diferitele aliaje de aluminiu au densități diferite?’.
Applications of Different Aluminum Alloys
Each aluminium alloy has unique properties that make it suitable for a variety of applications. The following are some noteworthy examples:
- Aluminiu 1100: widely used in general manufacturing and chemical equipment due to its excellent corrosion resistance and formability.
- Aluminiu 2024: commonly used in aerospace structures due to its high strength to weight ratio.
- Aluminiu 3003: often used in sheet metal applications and cookware due to its good formability and corrosion resistance.
- Aluminiu 5052: ideal for marine and chemical environments due to its high resistance to salt water corrosion.
- Aluminiu 6061: versatile alloy for a wide range of applications, including structural components, automotive components and consumer electronics.
- Aluminiu 7075: renowned for its high strength and used in aerospace applications, sporting goods and high performance machinery.
- Aluminium Magnesium 5083: offers excellent corrosion resistance and is commonly used in the marine and shipbuilding industries.
- Aluminium-Silicon 4047: mainly used in brazing and welding applications due to its excellent fluidity and corrosion resistance.
- Aluminium Lithium 2099: lighter in weight and more rigid for aerospace and defence applications.