FERRITIC STAINLESS STEEL HAVING IMPROVED CORROSION RESISTANCE, AND METHOD FOR MANUFACTURING SAME

摘要

Disclosed are a ferritic stainless steel having improved corrosion resistance, and a method for manufacturing same. A ferritic stainless steel according to one embodiment of the present invention, comprises: 0.001 to 0.05 wt% of C; 0.001 to 0.005 wt% of N; 0.1 to 1.0 wt% of Si; 0.1 to 1.0 wt% of Mn; 12.0 to 22.0 wt% of Cr; 0.01 to 1.0 wt% of Ti; and 0.01 to 1.0 wt% of Nb, with the balance being Fe and inevitable impurities, the area ratio of microdefects is at most 2%, and the sulfur (S) component content in a film within 5 nm from the surface is at most 10%.