Hexavalent Chrome Free Conversion Coating for Aluminium

Liquid, acidic, two part system, Zirconium (Zr) passivation free of any CMR substances including nickel or cobalt, providing high bare corrosion resistance to aluminium and alloys.  Improves paint adhesion and corrosion resistance of painted parts. It preserves the electrical conductivity of the aluminium surface.  Effective as a pre-sealing process for anodized aluminium and provides some protection to Zamac zinc die cast parts.

Features & Benefits

  • Process has many OEM/Tier 1 specification approvals
  • Eco-Friendly, free of CMR substance and REACh compliant
  • Cr(VI)free layer compliant with ELV, ROHS and WEEE directives
  • Simplified effluent treatment
  • 2 components for make-up and replenishments,  better process control
  • Provides outstanding corrosion resistance to unpainted parts (96-800 hours resistance in Neutral Salt Spray Tests, depending on the alloy)
  • Promotes the adhesion of organic coatings and increases the corrosion resistance of painted parts
  • Low electrical contact resistance meeting many OEM specification requirements
  • Able to repair/touch up in situ conditions
  • Effective as treatment for the sealing of anodized layers
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