Zinc Plating

Zinc plating finishing example in St Louis, Missouri

Chromates Available

  • RoHS Trivalent Clear Chromate
  • Yellow Chromate
  • Black Chromate
  • Top Coat Seal Available


  • ASTM-633
  • GMW3044
  • WSD-M1P85
  • Plus MANY Others

Zinc Helps Protect The Integrity of Metal Products

In the words of the singer Neil Young, “Rust never sleeps.”

Oxidation (rust) is a process that breaks down and destroys numerous metals including iron, zinc, brass and steel. When steel and iron parts rust, the finish is not only is not cosmetically unattractive, but more importantly as the steel component continues to degrade, the part is subject to a higher likelihood of failure or breakdown. Zinc plating is the primary choice for preventing oxidation when it comes to hardware parts and can be seen in many everyday applications such as common bolts and washers. As the best St Louis zinc plating company, Microfinish offers quality zinc plating services that stops rust!

Zinc plating and other similar coatings are key factors in extending or targeting the expected service life of metal products. Plating retards the eventual oxidization of any ferrous part (in particular steel) and is differentiated with four different classes for electroplated zinc processes by the American Society for Testing Methods (ASTM)’s specification B-633 which follows the basic concept that as the zinc application thickness increases, the level of protection increases.

More Than 50 Years of Zinc Plating in St Louis

Microfinish is a premiere zinc plating company in St Louis, Missouri with over 50 years of experience. While zinc plating and chromating processes (as well as our customers’ requirements) have changed considerably since our founding, Microfinish has evolved to meet the ever changing needs of the industry as part of our extensive suite of St Louis metal finishing services.

Zinc plating has evolved from a dull and inexpensive “rust proofing”, to a bright, esthetically pleasing protective coating designed to meet the many new requirement of the automotive, agricultural and appliance industries. High zinc plating quality is now considered an essential element of the total performance of component parts and assemblies in addition to its functional purpose of mitigating the corrosion of hardware.

Ask us about our automatic rack and barrel line plating, as well as baking for hydrogen embrittlement relief!

Call (314) 849-8181 or contact us to start your quick quote! Get a Quote