Shares of American steelmakers advanced in Monday's premarket activity ahead of an expected imposition of 25% tariffs on steel and aluminum imports to the US by President Donald Trump.

Cleveland-Cliffs (CLF) shares led the sector-wide surge, increasing more than 9.5% before the opening bell.

Nucor (NUE) shares were up more than 8%, Century Aluminum (CENX) nearly 8%, Steel Dynamics (STLD) and US Steel (X) around 6%.

Luxembourg-based Arcelor-Mittal (MT) shares were down nearly 1%.