Chromate Conversion

When aluminum and aluminum alloys are immersed in a controlled chromic acid bath with special additives, a chemical conversion reaction occurs at the metal’s surface. This reaction produces a complex, non-crystalline, non-porous coating consisting of a thin aluminum oxide film with entrapped chromates and dichromates. The coating’s corrosion resistant properties are due primarily to the chromates, specifically the hexavalent chromium.

Dav-Tech Plating’s chromating baths have been formulated to achieve the optimum coating performance for a chromate finish.

Dav-Tech Chromate Properties

Reference Specifications
  • All chromate is processed and tested in accordance with MIL-C-5541
  • Bath formulation’s chemistry controlled by MIL-C-81706
  • RoHS
  • WEEE

Benefits of Dav-Tech Chromating

Dav-Tech Plating’s chromating services offer several benefits: 

  • Low-cost option for corrosion and wear protection

  • A bonding agent for paint and adhesives

  • A lubrication carrier

  • Final finish

  • Minimal electrical resistance

  • No effect on critical dimensions, in most cases

Typical Applications and Planning

Dav-Tech chromate is typically used for:

  • Aluminum frames and weldments for the computer and defense industries. Our chromating technology deals effectively with poor drainage and entrapped chemicals, a complex problem common to frames manufacturerd of welded tubing and pipe.
  • Aluminum extrusions, tubing and structural assemblies. These can be chromated in lengths of 16 to 20 feet and cross sections of 4 to 5 feet.
  • Any aluminum part that requires painting for corrosion resistance.

RoHS Compliant Chem Film
Dav-Tech offers you the option of using a chem film instead of our chromate film. The chem film meets the following directives:

  • RoHS
    • WEEE
    • MIL-C-5541, with all the same benefits as our conventional chromate conversion coating

The environmentally friendly coating contains no hexavelent chrome. 

Download our Chromate Datasheet


Our Coatings:

Electroless Nickel
Hardcoat Anodize

Need More Information?

Give us a call at (508) 485-8472 or complete our form to get your quote today!

    Privacy Settings
    We use cookies to enhance your experience while using our website. If you are using our Services via a browser you can restrict, block or remove cookies through your web browser settings. We also use content and scripts from third parties that may use tracking technologies. You can selectively provide your consent below to allow such third party embeds. For complete information about the cookies we use, data we collect and how we process them, please check our Privacy Policy
    Consent to display content from - Youtube
    Consent to display content from - Vimeo
    Google Maps
    Consent to display content from - Google