1. All about aluminium

2. Aluminium is abundant in the Earth’s crust
Fe = 5%
Mn = 2%
Cu = 0.01%

3. Aluminium extraction
In open cast mining, aluminium is extracted from aluminium ore called bauxite.
The process was developed at the end of the 18th century.

4. Extraction process
Alumina is obtained from bauxite in a chemical process.
It is then transformed into aluminium by electrolysis.

5. Aluminium production
In the press works, foundry and rolling mill, aluminium is made into:
Sheets
Rods
Tubes
Profiles
Finished products

6. Characteristics of aluminium
Low weight
High strength
Superior malleability
Easy machining
Excellent corrosion resistance
Good thermal and electrical conductivity
Very easy to recycle
High reflectivity
Retention of toughness down to very low temperatures, without becoming brittle like carbon steels
Elasticity