India, Feb. 11 -- German stocks are up marginally Tuesday morning, edging up a bit after a slightly weak start, with investors reacting U.S. President Donald Trump's tariff announcement on metals and awaiting the congressional testimony from Federal Reserve Chair Jerome Powell.

Steelmakers are under some pressure following Trump raising tariffs on steel and aluminium imports to a flat 25% "without exceptions or exemptions." Trump's move is aimed to support the struggling U.S. steel and aluminium companies, but the tariff increases the risk of a multi-front trade war.

A White House official confirmed that the measures would take effect on March 4.

The benchmark DAX, which is moving between 21,881.89 and 21,978.60, was down 1.41 points at ...