Aluminum is a silver-colored, low density metal. It finds use in a huge variety of commercial applications. The Unalloyed type is ductile, exhibits moderate strength, and is very resistant to corrosion under most circumstances. Aluminum can be dramatically strengthened by the addition of appropriate alloying elements (Cu, Mg, Mn, Si, etc.) and subsequent heat/work treatments. It is commonly used in both wrought and cast forms.
The major uses for aluminium metal are in:
- Transportation (automobiles, aircraft, trucks, railway cars, marine vessels , spacecraft, etc.). Aluminium is used because of its low density;
- Building and construction (windows, doors, siding, building wire, sheathing, roofing, etc.). Since steel is cheaper, aluminium is used when lightness, corrosion resistance, or engineering features are important;
- Electricity-related uses (conductor alloys, motors and generators, transformers, capacitors, etc.). Aluminium is used because it is relatively cheap, highly conductive, has adequate mechanical strength and low density, and resists corrosion;
- A Low density, good appearance, ease of fabrication, and durability are the key factors of aluminium usage;
- Machinery and equipment (processing equipment, pipes, tools). Aluminium is used because of its corrosion resistance, and mechanical strength.