The Monty’s 50 Largest North American Commercial Heat Treats 2021 – #28 Flame Metals

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 This year readers will see we became much more ambitious and expanded the list to the 50 largest. In our 28th spot we have Flame Metals.

Flame Metals was founded in 1985 and operates a 100,000 square foot facility 7 days a week in the Minneapolis/St. Paul metropolitan area. With eleven integral quench furnaces (9000 lb max capacity) and two pit furnaces (25,000 lb capacity), the company is best known for its ability to process large critical components. Additional capabilities include continuous processing, vacuum, salt bath nitriding, neutral salt, induction, aluminum and car bottom.

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