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

-----

Intro to passivation procedure please

Dear Sir,

I don't have much experience on stainless steel but I would like to asking you about : my tube was stainless steel 316L 0,4micron electropolishing and my tank 316L 0,4micron manual polishing

My boss asking me to passivation the line and the tank.

Could explain to me about this matter and make my line really passive...?

Thanks,

Leri Syahyudi
- Jakarta, Indonesia
2005

Electropolishing will passivate stainless steel. Manual polishing will not.

Jeffrey Holmes, CEF
Spartanburg, South Carolina
2005

Electropolishing on a tube will only passivate the outside, but normally you want to passivate the innerside! Passivation is done in either nitric acid or citric acid. Don't ask what is best, it seems to be a matter of religion.

Bo Kønig
Food industry - Odense, Denmark
2005

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: