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

-----

Stainless steel coloring

March 3, 2008

we are in the process of doing the stainless steel coloring works. Mix of H2SO4 (d=1.84)of 490g/l and CRO4 of 250g/l at the temp of 70 - 90 degree C.
We only can get 4 relative color so far; with the "blue" "gold" and "violet". But my question is that is it the only colors I can get by using this Inco method?
Please guide me here and hope I can get the help I needed!

Teck Lau
stainless steel coloring - Sibu, Sarawak, Malaysia

Try next solution:1 lit sulfuric acid/7,5 gm potassium bichromate.Lead cathode,70-95 C/1,3 V-0.06 a/dm2.5-50 min. immersion.Brown-blue-redbrown-purple-green colour sequence.Only for 18/8 SS!Hope it helps and good luck!

Goran Budija
- Cerovski vrh Croatia
March 20, 2008

adv.

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: