STEEL HAVING EXCELLENT LASER CUTTING PROPERTIES AND METHOD OF MANUFACTURING THE SAME

摘要

A steel material having excellent laser cutting properties and a manufacturing method thereof are provided. The steel with excellent laser cutting properties of the present invention is, by weight, carbon (C): 0.15 to 0.30%, silicon (Si): 0.1 to 0.5%, manganese (Mn): 1.0% or less (excluding 0), chromium (Cr): 1.0% or less (excluding 0), Phosphorus (P): 0.05% or less (excluding 0), Sulfur (S): 0.01% or less (excluding 0), Aluminum (Al): 0.05% or less ( 0 is excluded), 0.1Si≤antimony (Sb)≤0.1%, the remainder Fe and other unavoidable impurities are included, and Relational Expression 1 is satisfied and the surface scale layer thickness is 50 μm or less.