Vacuum Heat Treating Companies in the U.S.

Vacuum furnaces harden, temper, anneal and braze parts without surface oxidation, which suits tool steels, stainless steels, titanium and aerospace alloys. 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 California (2), Pennsylvania (2), Indiana (1) and Kentucky (1). Certifications stated: 3 AS9100, 2 Nadcap and 1 ISO 9001.