Chem-Film coating, also known as Alodine or Iridite, is a chromate conversion process for aluminum. It produces a protective film on the surface that prevents corrosion while maintaining electrical conductivity. This is a significant advantage over anodizing, which is an insulator.

At AGS, we utilize both Type I (containing hexavalent chromium) and Type II (trivalent chromium, RoHS compliant). The process involves immersion in a chemical bath that reacts with the aluminum to form an iridescent gold or clear finish.

It provides an excellent base for paint adhesion, making it a standard choice for aerospace enclosures and electronic chassis. The coating meets MIL-DTL-5541 standards, providing up to 168 hours of salt spray resistance. It is often used on grounding surfaces and EMI shielding components where low contact resistance is mandatory.

Our facility ensures precise immersion timing and bath chemistry monitoring to achieve consistent results for mission-critical parts.