I currently have an automotive program that requires a black zinc chromate finish on a lever that I in turn over mold a plastic knob. The product has a requirement for a high quality visual appearance. There is also a 48 hour salt spray requirement. However, the focus is on the appearance as the part is used in an interior application.
I have had trials ran on some trivalent black with no success. The appearance has not yet been close to the quality of the Hexavalent product.
Do you know of a Trivalent zinc black that is delivering a high quality appearance?
Darrin N [last name deleted for privacy by Editor]
Ed. note: Sorry, this RFQ is outdated so private contact is no longer available, but public technical replies are still welcome! No public brand/source suggestions please ( huh? why?)
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