Nitriding Companies in the U.S.

Nitriding diffuses nitrogen into the surface of steel at relatively low temperature, producing a hard, wear-resistant case with little distortion. The heat treaters below list it.

Listings come from each company’s public information and may be incomplete, so confirm capabilities, materials and certifications with the shop before you commit. The fastest way to get quotes is one request: attach your drawing (PDF or STEP) or describe the part, and Noramark routes it to U.S. shops that fit.

The most listings are in Pennsylvania (4), California (3), Louisiana (2) and Indiana (1). Certifications stated: 5 AS9100, 5 ISO 9001 and 4 Nadcap.