Chromate conversion coating is a type of conversion coating used to passivate aluminum alloys (i.e. to make inactive or less reactive). It is primarily used as a corrosion inhibitor, primer or to retain electrical conductivity. Used in many different fields, we use the Tri-Vallent version. This Tri-Vallent is widely accepted in the electronics, aerospace, marine and military fields because of its health benefits. Our standard is the Mil-DTL-5541 type II, class 1A and Class 3. Green Bay Anodizing can do large enclosures or the smallest of electronic parts in our shop.

Dipped processing: 96L x 42W x 46H

Spray Processed: 120H x 70W x 8oL

Benefits of Tri-Vallent are:

  • RoHS approved process
  • Meets and/or exceeds salt spray testing
  • Great for paint adhesion
  • Clear in Color
  • Corrosion protection
  • Conductive


• Mil-DTL-5541
• Mil –STD-171, 7.3.1
• Mil –STD-171, 7.3.3

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