MEDIUM CARBON PEARLITE STEEL AND THE METHOD OF PREPARING THE SAME

摘要

One embodiment of the present invention is a steel sheet comprising, by weight percent, 0.3 to 0.418 weight% of C, 0.2 to 0.5 weight% Si, 1.0 to 3.0 weight% of Mn, 1.5 to 2.5 weight% of Al, 0.5 to 1.5 weight% of Cr, , Co: 1.5 to 2.5 wt%, the balance Fe and other unavoidable impurities.