We Welcome Edwards HT Customers

To Our ThermoFusion Family.

Professionals in Heat Treating and Brazing

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 Celebrates American Workers

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Latest News

ThermoFusion Acquires Edwards Heat Treat
Recent Projects

Lee Edwards, the 3rd generation owner of Edwards Heat Treating, has decided to retire and merge his heat treating company into ThermoFusion. We've known Lee, his dad and uncle, and their dad, for well over 40 years, and we're happy to help him move into the next phase of his life!

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ThermoFusion to Attend Furnaces North America
Company Events

Representatives from ThermoFusion's brazing and heat treating teams will be attending Furnaces North America to explore new equipment that will help us serve our customers. Our regular operations will continue while they're getting ideas for future investment.

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Welcome to Our Newest Employees
Company Events

We've added two new employees to our full time staff. Please welcome:

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Phone Outages are Fixed, Call Us at 510-782-7755.
General News

Our phone outage is now over, and we're ready to communicate! Give us a call for any heat treating or brazing questions.

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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

  • "We received the tanks yesterday and the brazing looks very good. Thank you so much for your help on these parts, and for getting them turned around so quickly.".

    John M, Mechanical Engineer

  • "Our tests look great so far.  The part looks outstanding!  As soon as I saw the part I knew we chose the correct company!  I will ship the next assembly tomorrow.  Once again, thank you very much for an excellent performance."

    Rick S, Facility Mgr

  • "Good thing we have a good Leader in Braze theory on our side! Thanks!"

    Martin W, Supply Chain Mgr

  • "Thank you very much for the amazing tour of ThermoFusion's facilities. I couldn't have asked for anything more. From the huge vacuum and hydrogen furnaces to the massive salt pot, I enjoyed it all."

    Cam A, Student

  • "Really happy with how they turned out.  Thanks again for the great work."

    Bryan P, Aerospace Industry

Covering a Variety of Industries

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