Superior Surface Protection and Preparation

Midwest Metal Products employs its own chromate conversion chem-film line for the most corrosion-resistant coatings available.

  • RoHS/REACH-compliant chem-film 
  • NADCAP Certified
  • Eliminates powdery areas, breaks and scratches
  • Improves adhesion of finish primers and paints

We also offer steel polishing to #4, #8 mirror or your exact specifications.

How the Chromating Process Works

We begin by thoroughly cleaning and polishing the surface of the metal. This careful pre-treatment process is critical. When done right, the surface sustains its anti-corrosive properties. Even when exposed to high temperatures, humidity and structural damage. Chromate coatings can then self-heal these climate assaults and surface scratches.

Next, we immerse the clean metal surface in a water-based solution of chromium salts and acid. We can also spray the metal with an acidic chromium coating.

Finally, after we apply the chromate coat, we treat the metal with deionized water, run it through a rinsing bath, and dry the metal.

The final coating varies in thickness and appearance. From bright yellow to dark brown to greenish in hue, chromate coatings can be aesthetically pleasing and iridescent. Darker colored finishes are usually thicker and provide the best corrosion protection.

Why Choose Midwest Metal?

Take a look through the photos below for detailed views of our chem-film line and finished products. See what our experts say about delivering a flawless product — every order, every time.

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Have questions or need more information? Contact the Midwest Metal Products team today.