Anodize / Chem Film

Chem Film
One type of Chromate Conversion coating, known as Chemical Film on aluminum or Iridite and Alodine (Proprietary names) are chemical treatments that give a superficial layer to aluminum alloy surfaces to boost corrosion resistance, provide electrical and conductive properties or to provide a good basis for the subsequent application of paint. Chromate Conversion treatments are defined under the department of defense specification MIL-DTL-5541. Type I is the most common call out and provides a yellow (Hexavalent-chrome) finish. Type II provides a clear (Trivalent Chrome) finish, this finish is EPA Certified and considered Rohs Compliant.

Why should you use chromate conversion coating?
Chemical Film is a good base for paint applications. It provides longevity to a part by protecting the part from corrosion, provides good electrical properties, and easily applied. It is both cost efficient and economical.


Anodize offers an economical option for those looking to protect their aluminum pieces and can be dyed a multitude of colors for those interested in aesthetics. Colors performed include, but are definitely not limited to, grey, red, gold, black, magenta, blue and green anodize. We also provide the option to color match. If there is a particular color you would like to match, please provide a sample with your parts. The most common types of anodize are listed below:

  • Chromic anodize (MIL-PRF-8625) – referred to as Type I anodize or Type IB (Low voltage process). Chromic anodize is dark gray in color or can be dyed black.
    Chromic Anodize has a thin coating (usually less than .0001”), although don’t be fooled by the thin layer, Chromic Anodize has equal corrosion protection as Sulfuric Anodize and Hard coat Anodize.
  • Sulfuric Anodize (MIL-PRF-8625) – Referred to as Type II anodize or Type IIB (Low voltage) is the most frequently utilized type of anodize. Sulfuric’s versatility makes it suitable for a wide range of applications.
  • Hard coat Anodize (MIL-PRF-8625) – Referred to as Type III deposits the most build up (starting at .001”), this anodize is generally requested when parts are subject to strong corrosive environments or extreme wear resistance.

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