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Conversion Coatings

Conversion coatings ensure corrosion protection, adhesion to the subsequent paint coatings, electrical insulation and minimize surface friction and abrasion. We offer you a broad range of technologies – from traditional phosphating processes to innovative, multi-metal thin-film technologies.

As a leading supplier of surface treatment technologies we offer you a variety of high-performance processes to form the optimum conversion coating. Depending on the substrate and your requirement you can choose between an iron-, zinc- or manganese-phosphating, electrolytical phosphating or a chromate, oxalate or anodizing process. Moreover, you can select from one of our innovative, eco-friendly titanium/zirconium- or silane-based technologies.

Our world-class recognized processes are also available as chrome- and nickel-free versions and are suitable for the manifold of substrates like iron, steel, galvanized steel and aluminium.


Our technology portfolio:

  • Gardobond® iron-, zinc- or manganese-phosphating
  • Gardobond® X titanium/zirconium-based conversion coatings for aluminium
  • Gardobond® X 4661 (SAM) for metal-free pretreatment of aluminium
  • Oxsilan® silane-based, multi-metal thin-film technology
  • Permatreat® conversion coating


Industries we serve:

  • Aluminium Architecture
  • Aluminium Finishing
  • Appliances
  • Automotive
  • Automotive Components
  • Coil Industry
  • General Industry
  • Heavy Equipment, Off-Road
  • HVAC
  • Metal Forming


  • Variety of technologies for diversified requirements
  • REACH-compliant processes
  • High-performance and established technologies – worldwide available




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