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Black Chrome or Nickel plating

How do I go about plating copper water pipe with soldered joints, to get a black chrome or black nickel finish? I want to used the finished article as a solar collector plate, hence the "black" finish required.

Kind regards

James R Prosser
- Durban, SouthAfrica
2001

In the USA virtually all platers rely on proprietary supplier formulations, but if you search the site very patiently you will find a formulation suggested at least once. Black chrome is ideal, but even regular chrome is pretty good and would probably be significantly better than black nickel. Solar energy works a little different than our eyes, and chrome is a good solar absorber material even though it looks bright,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey

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