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Metal Finishing

Tight tolerance anodizing on complex components, intricate masking on radical geometries, and strict adherence to the highest standards.

Quality Policy

Hirsh Precision’s in-house, metal finishing capability, known as Best Finishes, is a premiere anodizing operation with the goal to exceed the expectation of our customers by providing high quality products through technical excellence, consistent processes, and continuous improvement.

To learn more, contact their team today.

Type 2 Anodize, Class 1 (Non-Dyed)

Type II standard anodized aluminum has a coating up to 1 mil thick and is sealed to seal in the dye and close the pores after the anodizing process for improved corrosion resistance. It is the most common form of aluminum anodizing.

Type 2 Anodize, Class 2 (Dyed)

Type II anodic coatings are used to protect and color aluminum parts for decorative purposes only, where there are minimal requirements for durability. Typically, these are thin, highly porous, clear coatings that will easily receive dyes. These coatings can be dyed in a wide spectrum of colors.

Type 3 Anodize, Class 1 (Non-Dyed)

Type III Hard Coat Anodized Aluminum is a thicker, more durable coating up to 2 mils thick. It is also available in non-dyed and dyed options. For the best wear resistance and when adhesion is required on a non-dyed component, it is typically not sealed.

Type 3 Anodize, Class 2 (Dyed)

Type III ( Hardcoat Anodized) is done under more exacting process conditions resulting in a harder, denser, thicker, and more abrasion resistant coating. Hardcoat thicknesses can vary from 0.0005 to 0.0030” and beyond but is dependent on the specific alloy being anodized.

Chemical Conversion Chem-Film

Chemical Conversion coating is often referred to as Chem Film, chromate coating, or yellow chromate coating. This coating process applies chromate to the metal substrate, creating a surface that is corrosion-resistant, durable and exhibits stable electrical conductivity.

Passivation of Stainless Steel

Passivation is a chemical treatment with a specific acid formulation that removes free-iron or other surface contamination from the stainless steel while simultaneously promoting the formation of a passive chromium/nickel oxide layer to act as a barrier to further corrosion.

Our Metal Finishing Team

Our metal finishing processes include Aluminum Anodize Type II and Type III (Class 1 and Class 2) – any color – as long as it is black! Chromate Conversion Coating/Chem Film Aluminum; RoHS Compliant and Gold. Type IV Passivation of Stainless Steel.

We specialize in tight tolerance anodizing of precision machined aluminum parts and intricate masking of radical geometries. James Berry, our Operations Manager, has 25 years of precision anodizing experience which allows us to process extremely difficult parts with confidence. Our process control allows for accurate repeatability load after load.

Best Finishes processing capabilities; Anodize and Passivation lines consist of 24”W x 48”L x 48”D tanks. Chromate Conversion / Chem Film line consists of 18”W x 36”L x 48”D tanks.

Our Best Finishes capability was founded by James and Debbie in 2018, and we are delighted that they are part of the Hirsh Precision family.

Best Finishes…..from start to finish.