Aloha, fun & authoritative answers -- no cost, no registration, no passwords, no popups
(as an eBay Partner & Amazon Affiliate we earn from qualifying purchases)

Where the
world gathers for metal finishing
Q&As since 1989

-----

Etching fluid for annealed brass

2003

Hello, Please Help.

I'm a student studying materials I need to know what Etching Fluid is used on Annealed BRASS. If anyone could answer this question I would be extremely grateful.

Thanks Regards,

Amelia Washer
- Haywards Heath, West Sussex, England

If by etching you mean making patterns in the brass, the most common solution is FeCl3 (35%), closely followed by CuCl2. Both work at elevated temperatures, say 40-50C. If, however, you want to etch brass for metallurgical examination, use a mixture of H2O2 and NH4OH. Formulations can be found in any good metallography book as the best combination will depend on the brass composition.

Trevor Crichton
R&D practical scientist
Chesham, Bucks, UK
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: