Chem Film / Chromate Conversion Coatings
CHEM FILM…ALODINE…IRIDITE…PROTECTS ALUMINUM…IT IS AN EXCELLENT BASE FOR ORGANIC COATINGS
Chem Film, sometimes called Alodine or Iridite, is a chemical conversion coating that is used to essentially passivate aluminum. It protects aluminum from corrosion and serves as a base for organic (paint) coatings while leaving the part 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 aluminum condition. Chem film is generally not intended for decorative use, and has very little abrasion resistance.
Chem film per MIL-DTL-5541 Class 3 is electrically conductive. The best corrosion protection is provided by chem film per MIL-DTL-5541 Class 1A.
ELECTROLURGY CHEM FILM CAPABILITIES:
- Precision Masking Available for Selective 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:
- MIL-DTL-5541
- AMS-2473 & 2474
- MIL-C-81706
- AMS-C-5541
TYPICAL CHEM FILM APPLICATIONS:
- Aerospace/Aviation:Brush-on chem film is used in the repair of anodized surfaces and used for general corrosion protection on a multitude of aluminum aircraft components.
- Military & Defense: Chem film is used as a base coat for primer and 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 and other parts where there will not be opportunities for abrasion.
