U. S. Steel is an American steel producer that manufactures and sells a range of steel products to customers in the automotive, construction, and energy industries. The company operates mills and facilities in the United States, Canada, and Europe, and produces products such as sheet and plate steel, tubular products, and electrical steel. U. S. Steel was founded in 1901 and is headquartered in Pittsburgh, Pennsylvania. The company has faced challenges in recent years due to competition from foreign steel producers and declining demand for steel products.