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Hexavalent and trivalent salt spray hours?

Dear All

I need details of salt spray hours for both white & red corrosion as well as trivalent
& hexavalent passivation.

Does plating salt spray hours vary for trivalent & hexavalent with same coating thickness?

Can any one help me in this regard?

Regards,

Lingeshan Jayamani
Others - Salem, Tamil nadu & India
December 10, 2008

I guess you might be interested in the following documents:

Replacement of Hexavalent Chrome Passivations on Galvanized Steel:

www.surtec.com/Publikationen/TagungsbandAESF.pdf

High Performance Alternative to Hexavalent Chromium Passivation of Plated Zinc and Zinc Alloys:

www.macdermid.com/industrial/pdf/SAEreport.PDF

Google is your friend :)

Martin Michel
- Bielefeld, Germany
December 11, 2008

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