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Home > Aluminum chemical properties

Aluminum chemical properties


☆Aluminum has a resistance to oxidation
☆Aluminums Electron Configuration is [Ne] 3p^1

☆Aluminum is created by using an electronic method (Electrolysis) on pure Al2O3


The surface of aluminum metal is covered with a thin layer of oxide that helps protect the metal from attack by air. So, normally, aluminum metal does not react with air. If the oxide layer is damaged, the aluminum metal is exposed to attack. Aluminum will burn in oxygen with a brilliant white flame to form the trioxide aluminum (III) oxide, Al2O3.


In terms of chemical composition, aluminum has a high maximum solubility for hydrogen atoms in the liquid form and a low solubility at the solidification point. This means that even a small amount of hydrogen dissolved in the liquid weld metal will tend to escape as the aluminum solidifies and porosity is likely to occur – a great cause of concern during the welding process.


Also, aluminum combines with oxygen to form an aluminum oxide layer instantaneously as it is machined. This layer is very porous and can easily trap moisture, oil, grease and other materials. The oxide provides excellent corrosion resistance, but must be taken off before welding as it prevents fusion due to its high melting point (3700 degrees F). Mechanical cleaning, solvents, chemical etching and purging are used to take off the oxide layer.


Aluminum metal is obtained from the pure hot molten Al2O3 by an electrolytic method. The electrolysis of the hot oxide in a carbon lined steel cell acting as the cathode with carbon anodes is the most common method


Aluminum is a pure substance that occurs naturally in various compounds. It shares similar properties with other metals, such as gallium, indium and thallium, and is classified as group 13 on the periodic table. The atomic number for aluminum is 13, which means each atom has 13 protons and 13 electrons.


Represented symbolically as "Al," aluminum's atomic weight is 26.98 atomic mass units and the density is 2.7 g/cm3. Atomic weight refers to the average mass of an element that is determined by the contribution of each isotope. The metal's melting point is 660 degrees Celsius (1,220 degrees Fahrenheit) and boiling point is 2,519 degrees C (4,566 degrees F)


Aluminum chemical properties


Extruded aluminium profiles supplier and manufacturer, Foshan Honstar Aluminum Products Co., Ltd