BUZZ-US steel and aluminum producers jump as Trump plans additional import tariffs

Shares of steel and aluminum manufacturers in the United States climb after President Donald Trump said he will introduce new 25% tariffs on all steel and aluminum imports into the U.S., on top of existing metal duties

U.S. Steel X.N adds 7.1%, following on comments from Japan's Chief Cabinet Secretary Yoshimasa Hayashi that Nippon Steel 5401.T is considering a bold change in buyout plan

Among other steelmakers, Nucor NUE.N rise 3% and Steel Dynamics STLD.O

Roughly a quarter of all steel used in the U.S. is imported, mostly from neighbours Mexico and Canada or close allies in Asia and Europe like Japan, South Korea and Germany

Aluminum companies Century Aluminum CENX.O gain 8.8% and Alcoa AA.N up 5.1%

Roughly half all aluminum used in the U.S. is imported, and the vast majority comes from Canada

Asian and European peers fall