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Type I Chromic
Acid Anodize

What is Type 1 Chromic Acid Anodize?

Type 1 Anodizing, also called Chromic Acid Anodize, is a common anodizing technique that creates an oxide layer on the surface of the metal substrate.

The thinnest of the three main anodic coating processes, Chromic Acid Anodize delivers an electrically non-conductive surface with improved scratch and corrosion resistance.

Because the resultant oxide layer is so thin Type 1 is the preferred process for aerospace and other industrial components that may undergo flexing due to heat changes or mechanical means.


Properties and Benefits

  • Coating Thickness: 0.00002-0.001 inches
  • Substrates: A wide variety of aluminum alloys
  • Benefits:
    • Corrosion protection
    • Non-conductive / electrical insulation
    • Improved dielectric strength
    • Lesser absorption of pigmentation
    • Appropriate for parts with tight tolerances
    • Accepts higher degree of flexion
Applications / Industries
  • Advanced Technologies
  • Aerospace
  • Military
  • Precision Machinery
Specs & Certifications
  • MIL-A-8625 --- NADCAP Accredited
  • AMS-A-8625
  • MIL-PRF-8625
  • AMS 2470

Unique Substrates

AOTCO's lead for Chromic Acid Anodizing has more than 40 years experience with this process and AOTCO finishes on many exotic and uncommon Substrates that most plating providers won’t or can’t do.

Contact Us

If you have a unique part, specialized needs or simply want to work with the best, please reach out and let us know how we can help you achieve the results you need.

If you need a finishing partner who will listen carefully and then Make it Happen for You, call AOTCO at 1 888 275 0880

Since 1975 AOTCO Metal Finishing LLC has delivered outstanding results for clients with the toughest requirements for metal finishing.

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