No passwords, no registration, no paywalls, no popups, no AI

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

-----

Will Zinc passivation affect the weld quality / strength

We using studs (like bolt) which is welded to rod. Due to rust problem, we want to do yellow passivation (Zinc passivation) on stud. Will it affect the welding strength? Do we need to do Hydrogen de-embrittlement after passivation?

Ismail Kamal
Tenneco Automotive - Hosur, Tamil Nadu, India
2004

"Zinc passivation" actually means zinc electroplating followed by chromate conversion coating. If the studs are high strength steel, which they may be in automotive application, de-embrittlement is required after plating. It would be better to plate the weldment than the individual pieces.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
Need quick confidential answers? $25
Need project assistance? $100/hr.
2004

Sorry! Finishing.com is temporarily Read-Only.
Ted Mooney is retiring but I have several offers to take it over.
We're working hard to make sure we find it the best new home.

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: