finishing.com -- The Home Page of the Finishing Industry
Serious Education & the most FUN
you can have in metal finishing smiley

No popups, spam, registration or passwords
HomeFAQsSuggested
Books
Help
Wanteds
Advertise
on this site
FORUM
current topics
topic 50870

Does real stainless steel get rainbow color/blue tinting ?


December 18, 2008

I purchased supposedly 18/10 stainless steel cookware and on first use, the pot developed rainbow/blue discoloring. Is this normal and safe? Also, is it mandatory for companies to print the stainless steel content on the item...should my cookware be imprinted with 18/10 because it is not?

Thanks,
Melanie

Melanie Pasemann
buyer/customer - Tomball, Texas, USA

January 7, 2009

Hi, Melanie. 18/10 is a good grade of stainless, so some manufacturers may mark it such with pride -- but stainless steel is not a precious metal and I doubt that there is any rule anywhere that says they must. Metals can discolor from excessive heat -- you've probably seen exhaust pipes on motorcycles that have stained blue or gold -- but I think the discoloration you are seeing is probably a very thin layer of burnt-on oil.

Regards,

Ted Mooney, finishing.com Teds signature
Ted Mooney, P.E.
finishing.com
Pine Beach, New Jersey



If you have a question in mind which seems off topic, please Search the Site

ADD a Comment to THIS thread START a NEW threadView CURRENT TOPICS

Disclaimer: It's not possible to 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 may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices


©1995-2018 finishing.com, Inc., Pine Beach, NJ   -   About finishing.com   -  Privacy Policy
How Google uses data when you visit this site.