Aluminium is the most abundant metal in the earths crust. It ranks second, next only to steel, in terms of volumes used due to its versatility, which stems from its excellent and diverse range of physical, chemical and mechanical properties. Aluminium, which is only one-third the weight of steel is highly resistant to most forms of corrosion, is non-magnetic, non-combustible, is non-toxic and impervious (hence used in the food and packaging industries) and is also a superb conductor of electricity. Other valuable properties include high reflectivity and rapid heat dissipation. The metal is malleable and easily worked by the common manufacturing and shaping processes.
2. Use of aluminium metal are as follows:-
• In construction- windows, doors, cladding, weather-proofing, light constructions such as conservatories and canopies.
• In transport- auto, aerospace, rail and marine industries.
• Packaging- protection, storage and preparation for food and drinks.
• Electrical uses- overhead conductors and underground power-lines and power cables.
• Water treatment and medicine-antacid to combat gastric upsets, anti-perspirants.
• Machineries and Equipments.
• Castings- Automobile components etc.