Aloha, fun & authoritative answers -- no cost, no registration, no passwords, no popups
(as an eBay Partner & Amazon Affiliate we earn from qualifying purchases)

Home /
T.O.C.
Fun
FAQs
Good
Books
Ref.
Libr.
Adver-
tise
Help
Wanted
Current
Q&A's
Site 🔍
Search
pub  Where the
world gathers for metal finishing
Q&As since 1989



-----

Give me a RoHS compliant treatment for brass




2006

Hello,

I would like to replace the current treatment we are using of Chromate conversion DEF-Std-03-12/1 on Brass materials, since it is not approved for RoHS (hexavalent chromium).

Can you please help me to find such treatment process that is approved for ROHS.

Thanks in advance,

Eli Avitan
Ceragon networks - Israel



2006

According to old ex-USSR books copper and copper alloys can be phosphated:zinc phosphate....113 gm
NaClO3(sodium chlorate)...40 gm
water.............9 lit
You must use boiling solution. Good luck and hope it helps!

Goran Budija
- Cerovski vrh Croatia



According to literature I have read, several of the trivalent chromate conversion coatings for aluminum are also applicable on other surfaces including brass, copper, etc.

You might want to investigate these

Gene Packman
process supplier - Great Neck, New York
2006




(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories:

 
Jobshops
Capital
Equipment
Chemicals &
Consumables
Consult'g, Train'g
& Software


About/Contact  -  Privacy Policy  -  ©1995-2024 finishing.com, Pine Beach, New Jersey, USA  -  about "affil links"