-- The Home Page of the Finishing Industry

on this site
current topics

60,000 Q&A topics -- Education, Aloha, & Fun

topic 17149

High working temp., wear resistant, dark colored plating


I am looking for a dark colored plating for hardened steel (A-2 or S-7). The need is mainly for the dark color. Have tried black chrome and black oxide, and both wear over time. The steel sees plastic in an injection mold with the temperature of the plastic up 575 deg. F.

Bob Stanley
- Oneonta, New York


look out for chromium nitride/ chromium oxide which is dark grey close to black. it is done by vaccum metallization process, by the way why do you want the inserts to be black.



Silicon nitride is jet black, can be applied in a conformal coating, is in the class of ultra-wear restistant materials, and will resist temps up to 2000F in air. As long as the substrate is robust, CVD SiN might be the way to go.

Dale Woika
Surface Conversion Sciences - Bellefonte, Pennsylvania

Q, A, or Comment on THIS thread SEARCH for Threads about ... My Topic Not Found: Start NEW Thread

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 Compliance

©1995-2020, Inc., Pine Beach, NJ   -   About   -  Privacy Policy
How Google uses data when you visit this site.