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Conversion coatings chromium(VI)-free

Cleaning of aluminum

Aluminium cleaning: Procedure and advantages

The characteristics of aluminium surfaces can be improved exactly by depositing of a conversion coating. In this process, the non-uniform oxide film of the AL-surface is removed and replaced by a defined thin and resistant conversion layer.

The applied layers meet the requirements of the EU End of Life Vehicles Directive.

Further information on aluminium cleaning

  • Improved corrosion protection
  • Excellent adhesion primer for paints and varnishes
  • The formation of the natural oxide layer is inhibited by the application of this extremely thin layer
  • These layers are an excellent basis for subsequent processes:
    • Welding
    • Paint
    • Glue
    • Vulcanize
    • Environmentally friendly process

Among others, meets the requirements of::


Porsche Standard PTL 7556
„Converse coating of Aluminium semis and aluminium components“


VW Standard TL 824 27
„Washing and passivation of aluminium parts“


Mercedes-Benz delivery specification DBL 4952
„Delivery specification for Aluminium surfaces in car body“
Version 10


BMW PV 97022
Procedural requirement „Conversion layers on Aluminium“

Cleaning with silicate layer (Gardoclean 299)

Schichtauflage: 2 – 7 mg/m2
Korrosionsschutz: Lagerschutz bis 3 Monate
Eigenschaften: Verbesserung Adhäsion (Kleber)
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Direct contact sales office

Hussein Ghazi

Katrin Unterseher

Sales office