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Properties of aluminium

Aluminium is a light alloy with silver optics and so popular that the global utilization increases annually by more than 5%. The material occurs in many forms. Further, aluminium is differentiated according to its alloys which, which give the final alloy different properties.

Within the family of metals only silver, copper and gold have better electrical conductivity. Also the thermal conductivity of aluminium is very high, while its melting point is just above 660°C.
Anodised aluminium has an even higher corrosion protection than the untreated raw material as a result of its special surface. In addition, aluminium is corrosion-resistant in the neutral pH range due to its oxide layer. Rust does not adhere to this top layer since the light alloy is itself protected by this sealing layer.
Furthermore, aluminium contains no irom. This has as result that it is not magnetisable or is only paramagnetic, which means that it has no external magnetic characteristics. An important property and difference in comparison with steel and iron.

Further characteristics:

  • Low density
  • Simple to process
  • Smooth surface
  • Lower dimensional tolerances
  • Not magnetisable
  • Can be decoratively anodised very well (dependent on the alloy)
  • Good machinability (dependent on the strength and alloying elements)

Aluminium grades stocked

1050 is the most common general purpose grade of aluminium sheet, it is easy to fabricate and has good corrosion resistance.
3103 is slightly stronger than grade 1050, it is easy to fabricate and has good corrosion resistance.
2014 is a very high strength grade that has poor corrosion resistance.
5083 is available in plate or bar. It is a high strength grade suitable for marine applications and general fabrication.
5251 is the strongest sheet grade that we stock, it also has the highest corrosion resistance and is easy to fabricate.
5754 is used for tread plate applications. It is formable and is very corrosion resistant.
6063 is the most common grade available for general fabrication. It is not suitable for structural applications. It usually has a slightly better surface than 6082.
6082 is available in plate, bar and sections, it is a medium strength grade that is regularly used for structural applications. It has good corrosion resistance.
7075 is a very high strength grade with fair corrosion resistance.

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