Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

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

The authoritative public forum
for Metal Finishing since 1989
-----

Solutions for testing the presence of hard chrome on materials

I am looking for a test that will determine the presents of hard chrome on hardened steel material sometimes it hard to tell if it's polished or hard chrome? Can anyone help ?

Tony A Newman
- OKC. Oklahoma USA
2006

A drop of hydrochloric (muriatic) acid will react with chrome dissolving it with release of bubbles, a green salt and leaving it dull in a matter of 1 min or less. No visible action or change on steels.

Guillermo Marrufo
Monterrey, NL, Mexico
2006

You can use a copper sulphate ⇦this on eBay or Amazon [affil links] solution. An indication of red colour on steel. Good luck .

Khair Shishani
aircraft maintenance - Al Ain, UAE
2006

(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: