plating, anodizing, & finishing Q&As since 1989
Chromate conversion coating on zinc plated steel
Hello: Does adding a chromate conversion coating to a zinc plated steel enclosure will interfere with the enclosure's EMI protection? I am familiar with ASTM B633 [affil link] , but the spec. does not describe the EMI effects of adding a chromate conversion coating. Thank you Matt WiseMatt Wise
- Germantown, Maryland
I've never heard that it has any effect, and don't think it does.
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
Hi Matt ,
All the people that I know that plate Enclosures for electronic equipment , yellow chromate treat the Zinc Plating and have never had any problems , but for other reasons a lot of them are now switching (no pun intended) to semi - bright Nickel plating
John Tenison - Woods
- Victoria Australia
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