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

Where the
world gathers for metal finishing
Q&As since 1989

-----

Controlled stripping of tin from copper plated contacts

Hi,
I need some special contacts and because of time pressure, I cannot get them fast enough for my application. I found some but they are Sn plated.
I was wondering if is there any controlled way (electrical) to remove plated Sn from Cu contacts with out disturbing the Cu substrate.
Thank you.
Gabriel T.

Gabriel Toya
employee - Buffalo, NY, USA
September 27, 2011

Try anodic stripping in a hot alkaline solution, such as 20% sodium hydroxide at about 60-70° C

Trevor Crichton
R&D practical scientist
Chesham, Bucks, UK
November 14, 2011

(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: