​​​​​Since 1999 “The Monty” has been publishing annually a list of the largest commercial heat treaters in North America based upon annual sales, our 2021 list can be found at https://themonty.com/project/50-largest-north-american-commercial-heat-treats-2021-2/ This year readers will see we became much more ambitious and expanded the list to the 50 largest. In our 6th spot we have Solar Atmospheres.

Solar Atmospheres Heat Treating Operations. The Solar Nation heat treating plants includes Souderton PA, Hermitage PA, Fontana CA, and Greenville SC, and have in total 357,000 square feet of plant space. This does not include Solar Manufacturing division which produces vacuum furnaces.  While the down turn in the commercial aircraft business due to Covid effected the company their military business along with their health care business remained strong and the company continues to be profitable. 2019 sales were $61.2 million USD, 2020 sales were $54.3 million and estimated 2021 sales are expected to be $55 million.

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