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Electrically conductive black finishes for aluminum and steel
(2004)
I find the discussions on conductive black finishes interesting and informative. We have been struggling with this problem as well. We have a need to produce parts in Aluminum and steel with a black finish while addressing electrical conductivity issues. We have often used the undesirable method of masking in the past. We have used black oxide on our steel parts but we don't like the oily finish or the cosmetics. The weak conductivity is also a negative. We are currently seeking to find a solution and are trying to find out if black zinc, black chrome or some other process might work for us. Any information would be greatly appreciated.
Walter W [last name deleted for privacy by Editor]network test equipment manufacturer - Utica, New York
January 21, 2010
Hello folks, I work in Test Equipment and we have a similar situation. We want to have a black finish on our aluminum chassis for aesthetics and engraving purposes, but it must also be electrically conductive. All in one step would be preferred. Anodizing is not a very good answer for this, because we have many, all-aluminum parts inside, and depend on chassis ground throughout the units. If anyone has a Black colored ROHS compliant Chem-film answer, it would be greatly appreciated.
Scott A Smithaviation systems - Grand Rapids, Michigan