
Not a lecture hall but a roundtable with a seat for you!
60,000 topics spanning 36 years. Education, Aloha, & Fun
topic 8026
Seeking Chrome-6-free Zinc Cobalt Plating Service
2001
We require a plating process to exceed 480 hours salt spray following a 160 °C bake for 2 hours. However this process must not contain Chrome 6.
One solution offered by a company in France was Zinc Cobalt but I have not been able to find a contractor in the UK to plate these steel components.
Any suggestions on contractors for Zinc Cobalt or alternative plating that conforms to BMW's "Black" list (prohibited substances)
Mr. Jones- UK
2001
Dear Mr Jones,
The way to meet the spec is to use Zinc- iron with a triavalent Black Chromate. I have word from Surtec Gmbh, that they have a Triavalent Black Chromate available.
Regards,

