Chromate Conversion Coating


Arrow Cryogenics offers Trivalent Chromate Conversion coating for aluminum parts and components. Our chromate conversion coating meets mil spec MIL-DLT-5541 Type II Class 1A and Class 3. The coating materials we use are licensed from the U.S. Navy under U.S. patents.

What is Chromate Conversion Coating?

Chromate conversion coating is a chemical immersion process used by Arrow Cryogenics to passivate aluminum. This low cost process is primarily used as a corrosion inhibitor and as a primer for paint, lacquer, or rubber bonding.

Trivalent Chromate Conversion coating is used as a replacement for hexavalent conversion coating.

Arrow Cryogenics uses a unique chemical solution for our chromate conversion coatings. As specified by the above-mentioned mil spec, Arrow Cryogenics' chromate conversion coatings contain no hexavalent chromium, and form a clear, iridescent film on treated parts.

Chromate conversion coatings have been in use since at least the 1960s; however, the hexavalent chromium chemicals used have been found to be highly toxic. As a result, governmental regulations restricting the amount of hexavalent chromium in coatings have been enacted. RoHS is a common reference point for the elimination of hexavalent chromium. Trivalent chromate conversion coatings, using non-toxic, non-hexavalent chromium, are now used almost universally as a replacement.

Arrow Cryogenics uses a unique chemical solution for our chromate conversion coatings. Our conversion coatings are hexavalent free and are compliant with RoHS and WEEE directives. Arrow Cryogenics is also ISO 9001:2000 certified.

Industries benefiting from Chromate Conversion Coatings include, but are not limited to:

  • Automotive
  • Aviation & Aerospace
  • Buildings & Architecture
  • Electronics
  • Marine
  • Medical/Dental Equipment
  • Military/Law Enforcement
  • Sporting Goods

Contact Arrow Cryogenics today for more information about our trivalent chromate conversion coatings for aluminum.