Eisenhüttenstadt (Īˌzənhütˈənshtät) [key], city (1994 pop. 47,550), Brandenburg, E Germany; on the Oder River at the border with Poland. It is an inland harbor with shipyards and an important frontier trade center. Manufactures include pig iron, steel products, glass, and food processing. It was formed by the union of Fürstenberg, Stalinstadt, and Schönfliess in 1961.