Counting Down to the “Top 50” Heat Treats For 2025

Since 1999 “The Monty Heat Treat News”has been publishing annually a list of the largest commercial heat treaters in North America based upon yearly sales, last year’s list can be found at “50 Largest North American Commercial Heat Treaters 2024”
Before we introduce our 2025 list in 2 weeks we will make a few points;
  • Total commercial heat treat sales for 2025 are expected to be approximately $3 Billion USD
  • There are approximately 550 commercial heat treat plants in North America
  • Rankings are based upon anticipated sales for the calendar year of 2025. This would include heat treat sales and also other complimentary processes such as shotblasting, coatings and black oxide.
  • Roughly 8 commercial heat treaters in North America have closed in the past 10 months
  • All sales figures are in USD even for companies in Canada and Mexico.
  • We are always asked where the information for our rankings comes from, a very fair question. The largest on our list, “Bodycote” is a publicly traded company and sales figure are freely available, this is also the case with the second largest on our list “Aalberts Surface Technologies”. “Solar Atmospheres”, #3 on our list, is very open and freely gave us their sales figures. Most of the other companies on this list did share sales figures with us on the basis that they not be repeated, a very reasonable request. Further verification came from knowing the number of locations, the physical size of each, number of employees and the processes each offers.
  • The vast bulk of companies on this list are privately held which means exact sales figures can be difficult to find. So, while we are quite proud of our efforts and consider this list to be the most accurate available anywhere, we do not for a second claim that it is 100% correct. 
  • Over the years some readers have pointed out that our rankings are not always in line with “MTI” figures (Metal Treating Institute is the largest organization of commercial heat treaters in North America and they rank their members in each geographic region). While there are several reasons for this, the main was is that not all commercial heat treaters belong to MTI. 
  • We see a number of changes from our 2024.  For instance, the third largest commercial heat treater on our list in 2024 was family owned “Paulo”. It was announced at the end of 2024 that the firm would be acquired by “Aalberts Surface Technologies”, a transaction scheduled to take place shortly. For that reason, we have removed Paulo from our list. Another company on our list in 2024 was “Thermal Vac Technologies” of Orange, CA, USA this company was also acquired by another firm and has been removed from our list. 
  • Very unfortunately “American Steel Treating” of Perrysburg, Ohio, USA has been removed from our list after announcing they were closing April 1 of this year. 
  • We appreciate all the help and guidance everybody provided us with and we welcome your thoughts and comments.