Chromate Conversion


Chemical conversion coatings sometimes referred to as chromate conversion, chem film, Iridite or Alodine refer to a process of applying a thin barrier coating on the substrate to passivate aluminum alloys to slow the formation of corrosion. It is gelatinous film that has self-healing properties and improves paint adhesion on aluminum alloys and die castings. It can also be applied to zinc die castings.


  • Electrical Conductivity
  • Good Corrosion
  • Resistance
  • Excellent Paint Adhesion

Chromate Conversion finishing options available:

  • RoHs
  • Yellow
  • Clear

Common Specifications:

  • MIL-DTL-554IF
  • AMS-2474
  • AMS-2475
  • MIL-A-8625-F

Common Industries/uses:

  • aircraft industry
  • electronic cabinetry
  • aluminum stampings
  • electronic components
  • zinc die castings
  • aluminum die castings