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

-----

Galvanic problems

I need to know if there are any galvanic problems between Iridited aluminum and either zinc chromated steel, or passivated stainless steel, in an office environment.

- Brian Debelius
Mechanical Designer DRS Advanced Programs, Inc.
2000

For my opinion there is galvanic effect between those metals even in office atmosphere, the rate of corrosion will propagate depend on the humidity in the office room but for sure there is galvanic effect.

Yehuda Blau
YB Plating Engineering and Quality - Haifa Israel
2000

Alloy tin-cadmium is about the least potential couple that you can get. Diffused tin cad is OK also. These are picky baths and do not recommend them. Cadmium plated and chromated is next and stainless steel is after that and zinc plated steel is the least desirable. Look at all of the electronic cabinetry that is Alodined and plated screws with a blue chromate which is the leas effective of all. I would not expect a huge problem unless it was in the warehouse or similar.

James Watts
- Navarre, Florida
2000

(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: