Passivation of aluminum

Passivation of aluminum is a chemical coating process in which a passivation layer conforming to the RoHS directive is formed on the surface of the aluminum. The color of the passivation surface layer is almost colorless.

The surface layer gives the products good corrosion protection, heat resistance (350 °C) without compromising the corrosion protection properties. Anodizing works as a good adhesion platform for paint surfaces. Passivated aluminum can withstand the high temperature required by the powder coating oven.


  • provides a good basis for the painting
  • the surface remains good when stored
  • electrical conductivity remains good
  • excellent corrosion protection and heat resistance