the average plant manager salary in the united states is $169,157 as of september 27, 2021, but the range typically falls between $143,587 and $196,367. salary ranges can vary widely depending on many important factors, including education, certifications, additional skills, the number of years you have spent in your profession.,plant manager international search partners,description. the plant manager has complete operational control of the plant, including, but not limited to the following areas to manage and oversee. degree in metallurgical or materials engineering preferred, but the right experience is also considered. must have knowledge of all phases of heat treating and brazing.