Hobbyists & Industry luminaries alike learn on every visit
(we earn from 'affiliate link' purchases)

Curated with aloha by
Ted Mooney, P.E. RET

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

  The authoritative public forum
  for Metal Finishing 1989-2025

-----

Coloring of stainless steel

I'm a knife making hobbyist. I have seen some of the knife makers use stainless steel fittings (not blades) with a dark blue-green colour on their knives. How does one achieve this dark blue-green coulor?

Stefan Diedericks
- Brits, North west Province, South Africa
2003

Blue colour for iron and steel: copper nitrate ⇦ this on eBay or Amazon [affil links] ...50 gm manganese nitrate...50 gm water 1 lit Hot immersion (50 °C,only grease and oxide free objects can be treated)! You can take up to 75 gm manganese nitrate !

Budija Goran
- Zagreb, Croatia
2003

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

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: