Powder Coating Q&A: Pretreatment for Stainless Steel

What is the requirement for coating stainless steel?


Facebook Share Icon LinkedIn Share Icon Twitter Share Icon Share by EMail icon Print Icon

Q. I am working for ELGI Ultra Industries Ltd. as the vendor development manager. I have a requirement for powder coating SS 202 (stainless steel) material and I want to know the process, especially the pretreatment.

A. Stainless steel is chemically inert so there is no good chemical treatment for adhesion of a powder. I suggest you media blast the surface to roughen it for a good mechanical bond. Just be careful not to blast too aggressively and leave the surface too rough in appearance. Application should be the same as any other substrate. With a roughened surface you will need to apply enough film to adequately cover any peaks on the surface.

Originally published in the December 2015 issue.


  • Applying Robotics to Your Paint Line

    Considerations when deciding whether or not a robot is the right choice for your facility...

  • The Powder Coating Process

    Powder coating is one of the most durable finishes that can be applied to industrial manufactured products, and offers excellent corrosion protection and is very safe because of its lack of volatile organic compounds.

  • 2020 Vision: The Future of Coatings

    The year 2020 will be here before you know it, signaling the beginning of a new decade and bringing changes to the world as we know it.