plating, anodizing, & finishing Q&As since 1989
RoHS and zinc plated hardware
Are you saying (ref. letter 36234) that Zinc Plated washers and retaining rings are compliant? I thought my vendor said they were not.Susan Hotkowski
- Old Saybrook, Connecticut, USA
First of two simultaneous responses -- 2006
It's not the Zinc but the chromate that is at issue.
It is the chromate. Hexavalent chromates on zinc or aluminum would not be considered RoHS compliant.
metal finishing - San Jose, California, USA
Second of two simultaneous responses -- 2006
Zinc plated anything which has a trivalent conversion coating or non chrome coating is generally compliant. Ask your vendor to certify that parts are RoHS compliant.Gene Packman
process supplier - Great Neck, New York
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