European steel buyers and some manufacturers could benefit from 50% U.S. tariffs on the metal, but the potential for the eye-watering duty rate has rocked the already struggling industry. U.S. steel prices are set to climb further as a result of the higher tariff rate expected to come into effect this week,

The European Central Bank (ECB) has cut its key interest rate for the eighth time in just over a year as it warned about continuing pressure on the eurozone from Donald Trump's tariffs. The main rate has been reduced from 2.

A 50 percent tax on European imports would hit the continent hard, hurt the U.S. economy and slow growth globally.