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

-----

Electrophoretic paint and hydrogen embrittlement

I have a torsion spring application where cyclic fatigue is critical. The salt spray requirement is 96 hours. Our vendor is recommending a electrophoretic paint finish but I am concerned about hydrogen embrittlement. Hydrogen embrittlement quite often is the cause of spring failure. Is hydrogen embrittlement a concern in electrophoretic painting? And how important is type of cleaning in minimizing the risk of hydrogen embrittlement. What is the typical electrophoretic paint process? Does it include a bake operation at the end?

Thanks,

Tim Zwit
- Spring Lake, Michigan
2003

2003

Hydrogen embrittlement is not an issue in electrophoretic coating. Two reasons: One you deposit an organic layer therefore hydrogen does not get entrapped in the metallic lattice. Two the coating is cured at 170 °C. The process involves pre treatment to obtain a phosphate coating followed by E-coat and baking.

Hope that helps.

Gurvin Singh
Mohali, Punjab, India

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: