Induction Hardening Companies in the U.S.

Induction hardening heats only the surface of a steel part with an electromagnetic coil and then quenches it, hardening journals, gear teeth and shafts while keeping a tough core. 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 Ohio (2), Washington (2), California (1) and Indiana (1). Certifications stated: 1 AS9100, 1 ISO 9001 and 1 Nadcap.