Aluminum Chromate Conversion

Aluminum Chromating Services

Aluminum chromating - also known as chemical films or by the trade names Alodine® and Iridite® - is a conversion coating primarily used to passivate the surface of an aluminum component. The part surface is converted to the chromate through a chemical reaction. Aluminum Chromate will preserve the life of a part by inhibiting corrosion and preventing oxidation that naturally forms over untreated aluminum.

Aluminum Chromate provides an aesthetic benefit by improving the appearance of the metal. This finish also serves as a good base for paint, adhesives and other applications that require adhesion. This coating has low electrical contact resistance and is ideal for applications that warrant electrical conductivity

Our process can meet the requirements of common industry standards such as:

  •  MIL-DTL-5541 (MIL-C-5541)
  •  ASTM B 449

We can also meet the requirements of many manufacturer specifications.

Gatto Platers also offers Zinc Plating and Zinc-Nickel Plating as other corrosion resistant finish alternatives. To learn more about our chromate conversion coatings contact us today!

Aluminum Chromating Finishes 

  • Clear Chem Film/Chromate (RoHS Compliant)
  • Yellow Chromate (Hexavalent)
  • Cleaning & Etching

Chemical Film Metal Coating Benefits

  • Protection from corrosion and wear
  • Provides a good base for paint and adhesives
  • A lubrication carrier
  • Electrical conductivity
  • In most cases does not affect critical dimensions
  • Cost effective
  • Provides up to 168 hours of salt spray resistance

Chromating Capabilities

  • Capacity to process high volumes
  • Can process big parts up to 12’ in length
  • Protective packaging and wrapping available