Home /
Search 🔍
the Site

Chime right in! (no registration req'd)


"Various Surface Finishes on Stainless Steel"


Hi all,

I am working on a project that uses a photoelectric sensor to sense the presence of a particular part in the system. The sensor beam lands on one of the surface of the part being sensed. This part is made of plastic and is prone to scratches. The sensor gives wield readings when it hits the scratches, so I decided to add a steel plate on the surface. The surrounding environment is highly corrosive (this steel plate is going to be very close to the sulphuric acid bath), so I decided to use electropolished stainless steel. But when electropolished, the surface becomes so reflective that the sensor blanks out. It is unable to detect the distance. Is there a coating that I can put on the plate such that it serves both the purposes, it is electropolished to sustain in the acid/corrosive environment and the surface is opaque so that the sensor works fine?

What are the different surface finishes on stainless steel that I can try out to make it work. I know that stainless steel does work in the acid environment.


Mayur Jagtap
- Portland, Oregon


You can color passivate stainless steel in grey mate, or other color. Color passivation creates thick film on the surface of the stainless steel.

Anna Berkovich
Russamer Lab
supporting advertiser

Pittsburgh, Pennsylvania
russamer labs banner


There are a number of finishes for stainless steel. Contact the Nickel Development Institute (NiDI)

don baudrand
Don Baudrand
Consultant - Poulsbo, Washington
(Don is co-author of "Plating on Plastics" [affil link to the book on: Amazon or AbeBooks ])


Have you tried PVD coated stainless steel parts? Titanium black plated stainless should lessen the reflectivity.

Michael Liu Taylor
Michael Liu Taylor
specialty stainless steel distributor - Dallas, Texas

finishing.com is made possible by ...
this text gets replaced with bannerText
spacer gets replaced with bannerImages

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

Chemicals &
Consult'g, Train'g
& Software

About/Contact    -    Privacy Policy    -    ©1995-2021 finishing.com, Pine Beach, New Jersey, USA