Hardcoat (Hard Anodize) involves converting an aluminum surface into aluminum oxide using a sulfuric acid electrolyte. The process involves both penetration and build up on all affected surfaces to desired thicknesses.

Hardcoat is similar to sulfuric acid anodizing, though hardcoating baths typically run at lower temperatures, higher amperages and higher voltages.

Dav-Tech Hardcoat Anodizing Properties

Thickness .002″ to .004″
Penetration 50%
Buildup 50%
Wear Resistance Excellent
Can be processed to meet specific requirements.
Corrosion Resistance Excellent
Can be processed to meet specific requirements.
Available Finishes
  • Natural Color
  • Black
  • Colors
  • Teflon® Impregnated
Reference Specifications Meets or exceeds all requirements of:

  • MIL-A-8625
  • Type III
  • Other military and commercial specifications
  • ELV
  • RoHS
  • WEEE

Benefits of Dav-Tech Hardcoat Anodizing

Dav-Tech Plating’s hardcoat anodizing, when properly applied, can enhance the ability of a light metal (aluminum) to withstand heavy wear application as well as severe corrosive environments.

Other benefits of Dav-Tech Hardcoat include:

  • Abrasion, corrosion and erosion resistance

  • Low coefficient of friction

  • Flame resistance

  • Dielectric properties

  • Excellent heat emissivity

  • Safe for food stuffs (cookware)

  • Non-contaminating to blood supplies (medical instrumentation)

  • Ceramic-like

  • Lightweight

  • Applicable to most aluminum alloys

Planning for Dav-Tech Hardcoating

The total thickness of the anodic coating produced during hardcoating is 50% penetration and 50% buildup. This penetration feature renders the coating integral with the substrate and differentiates it from other electrolytic coatings.

It also requires planning of critical dimensions on parts that need to be hardcoated.

Example: A 1.000” diameter shaft hardcoated .002” will increase to 1.002″ as a final diameter, representing a .001″ buildup per side. Similarly, a 1.000″ bore will decrease to .998″.

The typical hardcoating thickness of .002” to .004” can be controlled to close tolerances and can be finished by precise abrasive methods to meet extremely fine dimensional requirements.

Download our Hardcoat 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