The Monty’s 50 Largest North American Commercial Heat Treats 2021 – #43 Contour Hardening, Indianapolis, Indiana

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 43rd spot we have Contour Hardening, Indianapolis, Indiana.​

Contour Hardening, Indianapolis, Indiana. Contour was established in 1986 with the goal of providing a cost-effective solution to difficult heat treatment applications-specifically induction hardening systems. However the company is also known as a substantial commercial heat treater. Contour is located in Indianapolis, Indiana with a second location in Sialo, Mexico. While primarily known for their Induction hardening expertise Contour also offers gas nitriding and Nitrocarburizing.

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