 There are three Fortune 500 iron and steel manufacturers with world headquarters in Ohio : AK Steel , located in Westchester , Timken Company , located in Canton , and Worthington Industries , located in Columbus . Other notable companies include Russia @-@ based Severstal , which has facilities located in Warren and Steubenville , Luxembourg @-@ based Mittal Steel USA , which has facilities in Columbus and Cleveland , United States Steel Corporation in Lorain , Cliffs Natural Resources in Cleveland , and Republic Engineered Products , North America 's largest supplier of specialty bar quality steel , located in Canton . V & M Star Steel , a subsidiary of France @-@ based Vallourec , broke ground on a $ 650 million production facility in Youngstown in June 2010 . 
