Calvert is an unincorporated community and census-designated place in Mobile and Washington counties, Alabama, United States. It is located in the extreme northeastern corner of the county near the Tombigbee River, along U.S. Route 43. As of the 2010 census, its population was 277.German technology conglomerate ThyssenKrupp broke ground on a US$4.65 billion stainless and carbon steel processing facility in Calvert in 2007. The facility became operational in July 2010. ThyssenKrupp's stainless steel division, Inoxum, including the stainless portion of the Calvert plant, was sold to Finnish stainless steel company Outokumpu in 2012. The remaining portion of the ThyssenKrupp plant with a production capacity of 5.3 million metric tons that includes a hot strip mill, cold roll mill and four coating lines, was purchased by a 50/50 joint partnership of ArcelorMittal and Nippon Steel in February 2014 for $1.5 billion and renamed AM/NS Calvert.