Zinc Coatings

Zinc has a number of characteristics that make it a well-suited corrosion protective coating for iron and steel products in most environments.

In addition to creating a barrier between steel and the environment, zinc also has the ability to cathodically protect the base metal. Zinc, which is anodic to iron and steel, will preferentially corrode and protect the iron or steel against rusting when the coaitng is damaged. 

Many different types of zinc coatings are commercially available, and each has unique characteristics. 

These characteristics not only affect applicability but also the relative economics and expected service life. The method of processing, adhesion to the base metal, protection afforded at corners, edges, and threads, hardness, coating density, and thickness can vary greatly among the different coatings. 

Production Processes for Zinc Coatings:

 

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