Since 1933, the Metal Treating Institute has been the Largest Heat Treat Community of Commercial Heat Treaters, Captive Manufacturers and Suppliers. MTI produces the Largest Heat Treat Only Conference and Expo in North America and also hosts the #1 Online Technical Training Academy and Management Training Program in Heat Treating. With MTI, you achieve excellence because we deliver “value” to our members where they can achieve Flawless Execution, Excellence in Operations and Get Answers When They Need Them.