Summary for electrically conductive e-coating Discussion
electrically conductive e-coating is the core question here: Jeff Fontana asked whether an e-coat for a steel electronics cabinet could remain conductive so a grounding path would not require masking off bare areas that might rust. He also asked whether an additive could be mixed into the paint to make it electrically conductive. The only answer in the thread, from an unnamed respondent, says they have not heard of an electrically conductive e-coat. Instead, the respondent suggests that if a conductive, corrosion-resistant coating is needed, zinc plating may be a better option. No other alternatives or follow-up discussion are provided, so the thread ends with a cautious recommendation rather than a definitive product endorsement.
July 9, 2013
Q. Looking at using an e-coat for an electronics cabinet, and I’d like to keep a grounding path without having to mask off areas on the frame for grounding contact, as it structure will be steel, and will rust where it is not coated. Is there an e-coat paint that is conductive? Can an additive be added to the paint to allow for electrical conductivity?
Jeff Fontana
Mechanical design engineer – Pleasanton, California, USA
A. Hi. I haven’t heard of such a thing, Jeff. But if you want a conductive corrosion resistant coating, why not zinc plating?
Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com – Pine Beach, New Jersey
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A. I feared there would not be a conductive material, as the lack of conductivity of the paint as the plating builds up sets the plating thickness, but I thought I’d check. Zinc is not an option, as I would have to use electroplated Zinc, and then I run the risk of Zinc Whiskers, which may not actually be hazardous, but drives customers nuts.
Thanks
Jeff Fontana
– Pleasanton, California, USA