Chemical Film Treatment
Chem Film, Chemical Film, or Chromate Conversion is a process used for applying a protective chromate coating onto aluminum, aluminum alloys, cadmium, magnesium, zinc, and also on zinc nickel deposits. Conversion coatings are formed when the chemicals in the chromate solution react with the base metals (i.e. aluminum, et.al.) dissolving the metal oxides and forming a complex hydrated metal oxide-chromate on the surface. The coating formed is corrosion resistant, durable and affords stable electrical conductivity. Chem Film can be used as final finish or can also serve as a base for paints, powder coats, lacquers, or as a base for rubber bonding.
| Specification | Specification Description | Company |
|---|---|---|
| BPS-4182 Class 1A | Chemical Film Treatment of Aluminum | Bell |
| BPS-4182 Class 3 | Chemical Film Treatment of Aluminum | Bell |
| BAC 5719 (Immersion Only) | Chemical Film Treatment of Aluminum | Boeing |
| Mil-Dtl-5541 (Immersion Only) | Chemical Film Treatment of Aluminum | Boeing |
| MIL-DTL-5541 | Chemical Film Treatment | Collins Aerospace |
| AMS-C-5541 | Chemical Film Treatment of Aluminum | Lockheed |
| Mil-Dtl-5541 | Chemical Film Treatment of Aluminum | Lockheed |
| Mil-Dtl-5541 | Chemical Film Treatment of Aluminum | Parker Hannifin |
| MIL-DTL-5541 | PWC-APU Program | Pratt & Whitney Canada (PWC) |
| Mil-Dtl-5541 | Chemical Film Treatment of Aluminum | Sikorsky |
| SS 8486 | Chemical Film Treatment of Aluminum | Sikorsky |
| AMS 2473 | Chemical Film Treatment of Aluminum | Various |
| AMS 2474 | Chemical Film Treatment of Aluminum | Various |
| Mil-Dtl-5541 | Chemical Film Treatment of Aluminum | Various |
| Mil-Dtl-5541 Class 1A & 3 | Chemical Film Treatment of Aluminum | Vought |
