Surface Finishing Services

Chromate Conversion Coating Services

Chromate conversion coating, commonly referred to as chem film or by its trade name Alodine, is a form of coating that is applied to aluminium to prevent corrosion. It can also be used as a primer for paint, as it increases adherence or to maintain electrical conductivity.

About Chromate Conversion Coating

Our Chromate Conversion Coating Services provide a reliable solution to enhance the protection, adhesion, and corrosion resistance of your metal parts. With our specialized chromate conversion process, we create a thin, protective layer that improves the durability and performance of your components.

Why Choose Our Chromate Conversion Coating Services?

  1. Corrosion Resistance: Chromate conversion coatings form a barrier that protects the metal surface from corrosion, oxidation, and environmental factors. This helps extend the lifespan of your parts, particularly in challenging conditions or corrosive environments.
  2. Enhanced Adhesion: Chromate conversion coatings promote excellent adhesion for subsequent coatings or finishes, such as paint or powder coating. This ensures a strong bond between the metal substrate and the coating, improving overall durability and resistance to peeling or delamination.
  3. Versatile Applications: Our chromate conversion services are suitable for various metals, including aluminum, zinc, and magnesium. Whether you need corrosion protection for aerospace components, electrical enclosures, or automotive parts, we can tailor our services to meet your specific requirements.
  4. Electrical Conductivity: Chromate conversion coatings can maintain or enhance the electrical conductivity of metal surfaces, making them suitable for applications that require electrical grounding or conductivity.
  5. Color Options: Chromate conversion coatings can also provide different color variations, such as clear, yellow, or iridescent. This allows for easy identification or aesthetic preferences, adding versatility to your design options.
  6. Eco-Friendly Processes: We prioritize environmentally friendly practices in our chromate conversion services. We adhere to strict regulations and utilize eco-friendly chemicals and processes, minimizing waste and environmental impact.
  7. Quality Assurance: Our chromate conversion services undergo rigorous quality control measures to ensure consistent coating thickness, adhesion, and overall performance. We are committed to delivering high-quality results that meet your specifications and requirements.
Surface preparation Colors Applicable materials Thickness Cosmetic availability Visual appearance
As machined (Ra 3.2μm / Ra 126μin) Clear/ slight yellow tint Aluminum (7xxx series not recommended) None No Machining marks are visible
Bead blasted (Glass beads #120) Clear/ slight yellow tint Aluminum (7xxx series not recommended) None Cosmetic on request Machining marks are completely removed on “cosmetic” parts but may be visible on “non-cosmetic” parts

Example of chromate conversion coated parts

How does chromate conversion coating operate?

This involves introducing chromic acid to a metal in a chemical reaction, creating a thin coating that safeguards against corrosion and enhances durability.

V1 provides chromate conversion coating for aluminium components to enhance their functional properties. To find out more, contact

Here's how we apply chromate conversion coating:

  • Firstly, any contaminants are removed from the parts
  • by cleaning and degreasing, followed by rinsing to eliminate any detergent residue.
  • Next, the aluminum parts are immersed in a tank containing the chemical solution.
  • Once the desired thickness of coating film covers the surface, the
  • parts are removed and rinsed again.
1700125801 chromate conversion coating work

Experience the Benefits of Chromate Conversion Coatings

Improve the protection and adhesion of your metal parts with our professional chromate conversion coating services. Contact us today to discuss your project requirements and discover how our coatings can enhance the performance and longevity of your components.

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