Doesn aluminium corrode when left unprotected?
Only when in contact with naturally aggressive metals and other substances. However, preventative measures are normally available (please seek expert advice from Alumasc Technical Services). Aluminium is a non-corrosive metal. Although a natural oxidation effect occurs on unprotected aluminium, the process actually protects the metal from further corrosion. Some specifiers request plain aluminium to make a feature of the oxidised aluminium.
