Aluminium in it´s natural condition has good corrosion resistance. When needed, this resistance can be improved through various types of surface treatment.

One of the principal reasons for choosing aluminium and its alloys for construction applications is their high corrosion resistance. Although aluminium is a chemically very active metal, its behaviour is stabilised by the formation of a protective film of oxide on a recently formed aluminium surface.

Generally, the film is stable in aqueous solutions with pH 4.5-8.5. Further considerations need to be made if the pH exceeds these limits or the environment contains chloride. Anodising and powder coating are common methods to increase corrosion resistance.

Contact our Technical Support for further information.