Chemical Processes

Chromate Conversion Coatings

What We Do

Chromate Conversion Coatings

Chromate conversion (also called chemical film, Iridite or Alodine) is a coating applied to aluminum to increase the corrosion resistance and surface adhesion properties of the base metal.

Hillock only uses products that are in accordance with MIL-DTL-81706. In addition, Trivalent Chromate can be specified for parts that require RoHS compliance or the need for a hex-chrome free product.

Hillock’s process was engineered to eliminate the need for high temperature drying which is catastrophic to the corrosion properties. In addition, the process is compatible with parts with small blind holes that frequently experience defects from poor rinsing.

Control of solution makeup water quality, rinse water quality, and solution contamination allow for adherence to numerous MIL-SPEC and Prime Contractor specifications.

Chemical Cleaning

  • Non-etching Alkaline Cleaning
  • Non-etching Acid Cleaning
  • Caustic Etching
  • Acid Etching
  • Etching/Desmutting for high silicon alloys
  • Electropolishing
  • Chemical Polishing
  • Ultrasonic Non-etching Alkaline Cleaning

Featured Finishes

  • Optimized cleaning cycles specific to each alloy and surface condition
  • Consistent Gold Chromate Conversion Coating color

Quality Service for Engineered Performance Coatings.

Hillock Anodizing, Inc. is committed to the continuous improvement of all products and services and is determined to remain the quality leader in Hillock Anodizing, Inc’s field of expertise. Commitment to the goals of continuous improvement, customer-driven service, product quality, and employee involvement is of the utmost importance.