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"Yellow dichromate plating" composition





2005

Sir,

I am in Spring manufacturing Company. For my automobile customer, I need to submit IMDS for Yellow dichromate. What are the contents in yellow dichromate? How should we check them? What is the estimated % of all these contents? Appreciate your reply ASAP.

THANKS

Nitin Deshpande
spring manufacturer - Singapore





January 6, 2011

Hi there,
I would also like to know what is the chemical composition of a Yellow Dichromate Plating. I need to report in IMDS the coating for hardware.

Cristian Golub
- Guelph, Ontario, Canada



Sorry, but there is no such thing as yellow dichromate plating. There are a broad range of coatings that are produced from a chemistry that includes a dichromate, but we wouldn't be able to answer your question specifically. Your best bet is to contact the company that provided the coating.

Jon Barrows
Jon Barrows, MSF, EHSSC
Kansas City
January 7, 2011



Hi, Cristian. As Jon says, there is no such thing. You probably are referring to zinc plating followed by either a trivalent or a hexavalent chromate conversion coating, yellow in color. Again, as John urges, get this information from the applicator, but pay specific attention to whether the conversion coating is a trivalent one as I doubt that any automobile customer in the world will accept hexavalent chromate due to RoHS restrictions. Good luck.

Regards,

Ted Mooney, finishing.com
Ted Mooney, P.E.
Striving to live Aloha

finishing.com - Pine Beach, New Jersey

Ted is available for instant help
or longer-term assistance.

January 9, 2011




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