Now Certified and Accredited

ISO 9001, AS9100, and Nadcap

New AS9100 Suppler Flow Down Requirements!

ThermoFusion Inc., Specialists in Brazing and Heat Treating, has been solving customers' metallurgical problems since 1968. Our services consist of Heat Treating, Aluminum, Brazing/Joining, and Secondary Operations. We pride ourselves in the quality of our work and are the only specialists in California who provide Heat Treating and Brazing services. ThermoFusion is committed to customer satisfaction through excellence in heat treating and brazing services. ThermoFusion and its employees take pride in the quality of their work and are dedicated to improving.

Dave Sr Retires!

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Latest News

MTI Releases New Video
General News

The Metals Treating Institute, which is the representative trade organization for all heat treating and brazing shops in the US, has just released its latest vide about some of the industries, and some of the products in the industries, that have heat treated materials. Take a look!

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New Supplier Flow Down Requirements
General News

We have new AS9100 Supplier Flow Down documents. Please read them, as we'll be following them.

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TFI Donates to UCSF Children's Hospital
General News

On behalf of our customers, large and small, ThermoFusion has donated to the UCSF Benioff Children's Hospitals. Thank you for your support of us, as we support others.

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Visit Us at BioMedDevice Show
General News

Visit Us at BioMedDevice Show in San Jose Dec 5 & 6. Click HERE for more information.

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We Specialize in all Material Solutions

Heat Treating

Heat Treating includes all the various metalworking processes which are used to change the properties of a material to make it useful.

Brazing & Joining

Brazing is a metal-joining process where two or more materials are joined together by a third, dissimilar material to bond them together.


Aluminum is one of the most abundant elements on Earth, but it needs to be heat treated to be useful to machinists and consumers.

Secondary Operations

Secondary Operations are all those steps beyond just heat treating and brazing that add value to our customers and their parts.

Get to Know Us

  • "... thanks for the flexibility, we appreciate it."

    Tadd T, Bus. Dev. Mgr.

  • Thank you for your help. In my 29+ years with ****, the customer service from ThermoFusion has always been excellent. And it continues now, thank you again.

    Marcy, Buyer

  • Thank you for the heads-up. Of all the heat treaters we deal with, you are one of the easiest to work with.

    Zach E., Owner

  • Thanks for the quick turn over on our last parts. The pickup and drop off ... went perfectly. ... Our customer is stoked about how they came out. One of the guys said he wants that finish on his pickup ...

    Sterling D., Supply Chain

  • "... thanks for the efforts and the update!"

    Jeff B, Supplier Business Mgr

Covering a Variety of Industries

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