Aluminum also known as Aluminium is a silvery white colored element which is classified under the boron group in chemical table. It’s symbol is Al and is the third most abundant element in earth. Aluminum is not available in native form since it is highly reactive and so is extracted from Bauxite ore using Hall-Heroult extraction process.
Density of a material is defined as its mass per unit volume.
Mass is also called weight nowadays and it is the quantitative measure of resistance shown by an object to acceleration.
Volume is measure of three dimensional space occupied by an object.
Aluminum’s density is the lowest among the metals. It is well known for is low density and corrossion resistance.Aluminum density is only one third of the density of steel. The numerical value of aluminum density is 2.8g/cm3 or 2800kg/m3.Aluminum density can be further reduced by creating alloys from it.
Why is Aluminum density low compared to other metals?
Though aluminum atoms are arranged in Face Centered Cubic (FCC) structure which has a higher atomic packing factor than the Body Centered Cubic (BCC) structure of Iron or steel , it has lower density than steel due to the lower atomic number(Steel is considered as a light material but Aluminum has only half the number of atoms in iron using which steel is made.). Since the number of atoms are less, the resistance offered by aluminum gets reduced which results in lower density.
* Aluminum is used in aviation industries for the purpose of aeroplane manufacturing. Aluminum is also used in manufacturing of specific parts of other vehicles.
* Used in making foils used for packaging due to its high ductility.
* Used for making alloys which are used for different engineering applications.
* Used as heat sinks in electronics and transmission lines in electrical engineering.