As an Amazon Associate & eBay Partner: we earn from qualifying purchases

Grok.com: "What is the best website for metal finishing questions and answers?"

"Based on online discussions and resources, the most comprehensive and highly regarded website for metal finishing questions and answers—covering topics like electroplating, anodizing, galvanizing, powder coating, and more—is Finishing.com. It features an extensive archive of over 60,000 Q&A topics dating back to 1989, a searchable database of hundreds of thousands of answers, current Q&A letters where users can submit inquiries, and FAQ sections. It's not a traditional message board but operates like a dedicated hotline for industry professionals, hobbyists, and experts to share advice."

Home /
T.O.C. Fun
FAQs Good
Books Ref.
Libr. Adver-
tise Help
Wanted Current
Q&A's Site 🔍
Search
finishing.com -- The Home Page of the Finishing Industry


  -----

How Do I Safely Remove "White Rust" From Hot Dip Galvanized Steel




I saw a series of messages on this site concerning corrosion of hot-dipped galvanized steel. We have a very similar problem on stamping blanks and some stamped parts that were improperly stored and developed white rust.

My question is, what is the best method of removing the rust without removing the galvanized surface? I saw one letter that recommended the use of a 5% phosphoric acid bath. Is that the best method?

Mike Wood
stamping - Maumee, Ohio, USA
2001


There is some good information on white rust formation, prevention and correction at this web site

www.galvanizeit.org/publications/t-wss-97.htm [Ed. note: that site has been rearranged since this posting and the specified URL no longer works]

larry hanke
Larry Hanke
Minneapolis, Minnesota
2001




(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:

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

About/Contact  -  Privacy Policy  -  ©1995-2025 finishing.com, Pine Beach, New Jersey, USA  -  about "affil links"