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

Metal finishing Q&As since 1989

-----

Life Span of Yellow zinc plating Vs CR3 (ROHS compliance)

April 7, 2010

Dear Sirs,

The sheetmetal on our product are usually plated with conventional Yellow Zinc plating. However, the regulation for RoHS compliance requires us to change the plating to CR3. I would like to know how good is CR3 plating at preventing rust of base material compared to conventional yellow zinc.

Thanks.

Tan Koon Hiong
R&D Manager in my Company - Singapore

April 8, 2010

Hi, Tan. Modern Cr3 conversion coatings are considered the equal of the old Cr6 coatings in corrosion prevention.

Regards,

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

(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: