ROHS & Yellow Chrome Plating
ROHS & Yellow Chrome Plating
(OP)
We are in the process of looking to eliminate "Hexavalent" from our yellow chrome finish parts. I need more information on Zinc Trivalent Dichromate Plating. How many hours of salt spray can the Zinc Trivalent Dichromate Plating withstand? 72hrs, 96Hrs or 120hrs?
What would be an industry call-out that I can use on my drawings to if I want to have the yellow finish on ROHS compliant chrome finish parts?
What would be an industry call-out that I can use on my drawings to if I want to have the yellow finish on ROHS compliant chrome finish parts?





RE: ROHS & Yellow Chrome Plating
The callout I would use is "Trivalent Yellow Zinc Chromate"
RE: ROHS & Yellow Chrome Plating
RE: ROHS & Yellow Chrome Plating
RE: ROHS & Yellow Chrome Plating
An example drawing note would be Fe/Zn 5CN according to ASTM F1941.
RE: ROHS & Yellow Chrome Plating
RE: ROHS & Yellow Chrome Plating
So Fe/Zn 5CT
RE: ROHS & Yellow Chrome Plating
Not a typo. ASTM F1941/F1941M − 15 Standard Specification for Electrodeposited Coatings on Mechanical Fasteners, Inch and Metric is the most recent revision. It now uses suffix N, not T.
RE: ROHS & Yellow Chrome Plating
Wow, thanks for that info. I was unaware the suffix had changed.