Chem Film Alodine Iridite

Chem Film/Chromate Conversion Coatings (Nadcap Accredited)

Chem Film...Alodine...iridite...protects aluminum...base for organic coatings...applied by dipping, spraying or brushing

Chem Film, sometimes called Alodine or Iridite, is a chemical conversion coating that is used to passivate aluminum. It protects aluminum substrates from corrosion and serves as a base for organic coatings while leaving dimensions unchanged. Chem Film is applied by dipping, spraying or brushing. It is sometimes applied alongside Type II Anodizing and can be used to repair minor damage to anodized surfaces. The resultant coating is dependent on the substrate condition and not intended for decorative use.

Chem film per MIL-DTL-5541 Class 3 is electrically conductive. The best corrosion protection is provided by chem film perMIL-DTL-5541 Class 1A.

Chem Processing Inc. CHEM FILM Capabilities:

  • Available Masking for Selective Surface Coating
  • Salt Spray Corrosion Test per ASTM B117(minimum 168 hours of salt spray resistance)
  • RoHS compliant Chem Film (MIL-DTL-5541 Type 2)
  • Repair of anodized surfaces (per MIL-A-8625)
  • Post chem film CARC primer and paint (see CARC page)

Applicable Specifications:

AMS-2473 & 2474

Typical Chem film Applications:

  • Aerospace/Aviation: brush-on chem film is used in the repair of anodized surfaces and used general corrosion protection on all manner of aluminum aircraft components
  • Defense/Military: chem film is used as a base coat for CARC paint on ordnance, vehicles and tactical equipment
  • Maritime/Naval: chem film provides corrosion protection in saltwater environments
  • Electrical Industry: chem film is used for corrosion protection on housings

Chem Processing Inc. offers chem film/alodine/iridite services to Illinois, Wisconsin, Iowa, the Midwest and beyond. CPI is strategically located by highway routes to Chicago, Milwaukee, Madison, St. Louis, and Minneapolis. The CPI facility is minutes from Rockford Chicago International Airport, a major Midwestern air freight hub, enabling efficient door-to-door delivery across the United States or across the globe.

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