Letter 19006

Black Finish for Stainless Steel [Virginia] 

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Hello,

I recently ran across this site and thought some of you might be able to help me. I am Mechanical Designer and I am working on a project that requires a Black Finish or Coating for some stainless steel parts. These part are going to be used on an Air Craft Coffee Brewer, so the finish needs to be resistant to corrosion, steam, and chemicals. The parts are bent sheet metal and a shaft with bent sheet metal welded on to form a lever. The shaft will rotate and be installed using nylon bearings, So minimal thickness of any coating or finish is important as well. These parts are highly visible and the appearance is an issue along with the environmental issues. Can you suggest any finish specification that I might look into? Would black oxide hold up over time in such an environment? Or should i look in another direction?

Thanks in advance for any assistance on this issue.

Ken Simpson
- Sterling, VA, USA

Powdercoating would work well for your problem its very durable and comes in many colors........

Nathanael Darity
- Cowpens, SC

I can suggest black oxide finish. It is not highly durable, however covered with any acceptable clear lacquer can work. The picture below shows samples from light grey to dark black (can be matte also).

Anna Berkovich Russamer Lab Pittsburgh, Pennsylvania

At Anoplate "BLACK IS OUR KNACK." We offer several different blacks from black nickel (actually a rather transparent grey nickel) to black chrome, etc. We'd be glad to furnish samples if you'd ship up actual samples.

Milt Stevenson, Jr. Anoplate Corp Syracuse, NY, USA

Is black oxide different than bluing as in bluing guns? And if it is, there'll be no thickness added to the parts?

And bluing is also reasonably durable?

Thanks- Write back

Lee King
- Oxon hill, MD USA

Same thing, right, Lee. Virtually no thickness, right. Durability is relative, but yes, durable enough for some guns.

Ted Mooney, P.E.  finishing.com Brick, NJ

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