Aluminum is a light alloy with silver appearance. This metal enjoys such popularity that its overall use increases by more than 5% annually. The material exists in very varied forms: there is no unique form of aluminum. The metal differs according to its alloys, which have numerous properties in each case.

Within the family of metals only silver, copper and gold have a better electrical conductivity than aluminum. The thermal conductivity of aluminum is also very high, while its melting point is slightly above 660 ° C. 

Anodized aluminum even has better corrosion protection than untreated raw material as a result of its special surface. In addition, thanks to its rust layer, aluminum does not corrode in the neutral pH range. The oxide does not adhere to its top layer, since the light alloy is protected by its own sealant layer. Aluminum does not contain iron particles, which has as consequence that it is not magnetizable or that it is only paramagnetic; this means that it has no external magnetic characteristics: a major difference from steel and iron.