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

Ask Grok.com, or ChatGPT, or Google: "Best website for metal finishing questions?"

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

-----

How does a passivation layer get produced on stainless steel

Could you please tell me how a passivation layer occurs in a new stainless steel system. Is this passivation layer induced chemically or it does it just occur?

Kim Deberry
- Pittsburgh, Pennsylvania, USA
2003

The passivation layer occurs chemically, either naturally or induced by a chemical bath of some kind. Depending on the grade of stainless steel the process of passivation can be quite different and the results quite different. The passive layer that you want to form is a chromium oxide/ nickel oxide layer that is very resistant to corrosion. You can refer to ASTM A967 for more information and procedures.

However, in order to get the BEST passive layer it is always necessary to passivate the surface with a chemical to remove free iron and chromium enrich the surface of the steel. This gives you a much higher percentage of chromium oxide on the surface. Call us if we can help.

Lee Kremer
Stellar Solutions, Inc.

McHenry, Illinois

2003

www.finishing.com is made possible by supporting advertisers ...
this text gets replaced with bannerText

No dead threads! If this page isn't already on the Hotline your Q, A, or Comment will move it there.

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: