CENX - Trump doubles tariffs on Turkish steel aluminum August, 10 2018 09:14 AM Century Aluminum Company Pres. Trump tweets that he has authorized a doubling of tariffs on steel and aluminum from Turkey; levies on steel would be 50% and aluminum 20%, Trump says. More news on: United States Steel Corporation, AK Steel Holding Corp, Nucor Corporation, Commodities news, News on ETFs, Read more ...