Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ
The authoritative public forum
for Metal Finishing since 1989
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Is black oxide RoHS compliant?
Can someone tell me if the process for Black Oxide is RoHS compliant?
Irving Hernándezmetal stampings - Lancaster, California, USA
2005
Why not-there are no mercury, lead, cadmium or chromium in hot black oxide baths.
Good luck!
Goran Budija- Cerovski vrh Croatia
2005
User beware: MIL specs and various derivatives thereof mandate the use of a HEXAVALENT CHROMIUM rinse as the final rinse in black oxiding. If this rinse is used in processing parts, then HEX CHROME is "intentionally added" thus the 1,000 ppm threshhold for contaminant level doesn't apply and the parts are thus NON-RoHS compliant! Many, many black oxide processors use and their suppliers recommend use of such chromate bearing final rinses albeit weak.
Milt Stevenson, Jr.
Syracuse, New York
2005
Is black oxidised Steel RoHS Compliant?
Srinivas- Bangalore, Karnataka, India
2006 -- appended to this existing thread by editor
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