No passwords, no registration, no paywalls, no popups

As an Amazon Associate & eBay Partner we earn from affil links

finishing.com -- The Home Page of the Finishing Industry

Search our quarter-million Q&As

Home of the finishing HOTLINE since 1989

-----

Effect of high pH on chromated zinc fittings

Could you please help with some information on the affects of a pH of 8.5-10.5 on Zinc Di-Chromate coated fittings, does the Chromate coating prevent attack on the zinc base metal.

Any information would be appreciated.

Craig McCoy
Houghton Australia
1999

Craig,

I believe pH in the low end of that range you mentioned would eat off the chrome, and eventually the zinc. In the high end of your range you would quickly, more quickly(within minutes)in elevated temperatures eat through both the chrome and the zinc.

Mike

Mike McDonald
- Jefferson, Wisconsin
1999

Sorry! Finishing.com is temporarily Read-Only.
Please maintain your bookmarks! Although Ted Mooney is retiring, finishing.com is not!
It will have a new owner/curator very shortly!

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: