Quality Heat-Treating Customers Can Count On

Thermet has a wide array of low, medium and high frequency power supplies for induction hardening, which produce case depths as shallow as .020 and as deep as .600".

Thermet Inc. was started in 1978 by James M. Murphy as an induction hardening heat treating company in Menomonee Falls.​

Who We Are

We are ISO 9001:2008 registered and the parts we do induction hardening for are used in products throughout the construction, marine, mining and agriculture industries. 




Welcome to Thermet Inc., where strong values merge with quality induction hardening. 

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Thermet is ISO 9001:2015 Certified!
Download Our Certification in .PDF

About Thermet, Inc…

Thermet Inc. was started in 1978 by James M. Murphy as an induction heat treating company in Menomonee Falls. After years of serving the southeastern Wisconsin area with the highest quality induction heat treating available, the company started manufacturing and hardening ring gears for OMC's small horsepower outboard engines.

In 1987 the company moved to Milwaukee and added carburizing furnaces to more fully service their customers.

Since 1995 the company has been located in Waukesha and is solely focused on induction hardening. Paul G. Mikna, PE takes pride in leading the 2nd generation of this family-run business into the future and is committed to continuing to offer the high quality induction heat treating services that customers have come to depend upon.

After over 35 years in business, we continue to look forward to working with our loyal customers for generations to come.​​

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