| |
Letter 39051
RoHS compliance plating
++++++
Hello,
Could someone tell me what RoHS compliance plating would be the best
to replace Hard Anodize (Black color)?
John Ng
MFG. - Palo Alto, CA
++++++
Umm, probably Hard Anodize. Who told you hard anodize wasn't RoHS
compliant, and on what basis did they say it wasn't?
|
|
Ted Mooney, P.E.
finishing.com
Brick, New Jersey
|
++++++
The only part of the anodizing process that MAY cause RoHS
problems is the dye. If your dyeing, check with the dye manufacturer.
Justin Crisp
- Indianapolis, IN, USA
++++++
While I fully agree with both Ted and Justin, I remain puzzled
about the source of the question. A very large computer manufacturer
asked the same question having heard that black anodize is non-RoHS
compliant! I'm assuming that this stems from the minor chromium
content in SOME dyes, however, I'm not sure as to the valence state
of the chromium in the dye, nor the level of chromium incorporated in
the resultant coating. The fact that several people are confused on
the subject might be cause for all users of black dye to go back to
their manufacturers and get their dye manufacturer's "RoHS compliant
declaration". The fact that there are so many black dyes to choose
from might also complicate the issue if some are and some aren't.
++++++
The suppliers of our black dye and seal have certified them as
RoHS complient.
Dear Reader, please --
- Answer or follow-up on this subject (in non-commercial
fashion).
-
- My company is a supporting advertiser at
finishing.com and we want the contact information to reach
the inquirer privately.
-
- Post a new
question or inquiry on a different subject.
-
 |