As well-known, aluminum is a good metal, but is limited by poor mechanical properties.
This is why aluminum alloys are designed to improve the characteristics of the base material, with the addition of special elements that give their properties, a perfect blend.
The choice of an oxidation alloy should be made on the basis of several factors:
It is important to choose the alloy according to the application area and the requirements you want to achieve:
SERIES 1000 Al 99%: Alimentary – Low mechanical properties – Good oxidation
SERIES 2000 Al-Cu: Not for Alimentary – poor anodic oxidation
SERIES 3000 Al-Mn: Alimentary – Low used on mechanics – Rarely Processed with Anodizing Processes
SERIES 4000 Al-Si: Alimentary, depends on composition – Suitable for anodic oxidation if Silicon value is less than 9%. To be assessed case by case
SERIES 5000 Al-Mg: Alimentary – Mid mechanical proprerties – Good oxidation but with poor aesthetic finish, porous oxygen
SERIES 6000 Al-SiMg: Alimentary – Mid mechanical proprerties – Good corrosion resistance – Good oxidation with excellent aesthetic and technical finishing
SERIES 7000 Al-CuZn: Not for Alimentary – Good mechanical properties – Poor corrosion resistance – Good oxidation with optimum final mechanical properties; Corrosion resistance lower than other alloys with a risk of bollards (see Defects section).
The company G.H.A. Europe® is available for any requested advice regarding the choice of the right alloy and treatment according to the needs of the customer.