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What is Black Nitrate Coating?

I have been asked to quote a black nitrate coating on parts for an automotive seating application. 1. What is it consist of? 2. Who in the U.S. does it? 3. Is it toxic?

Roger Merillat
Automotive seating components - Archbold, Ohio
2003

what is black nitrite? is it toxic? is there another name for black nitrite? can it be applied to wire as a coating and how?

Mike Behnfeldt
wire - Archbold, Ohio
2003

I think nitriding treatment method.

Condition : 500 ~ 560¡É , 25 ~ 100 Hr, NH₃(gas) + CO²(Catalyst)

SE DO JANG
- Korea
2003

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