Ferritic stainless steel having excellent corrosion resistance and impact property of TIG welding part and the method for manufacturing the same

摘要

PURPOSE: A ferritic stainless steel with a superior corrosion resistance and a TIG welding unit impact property and a manufacturing method thereof are provided to lower manufacturing costs by processing an AOD or the VOD singleness refining process by adding Ca. CONSTITUTION: A ferritic stainless steel with a superior corrosion resistance comprises C less than 0.02 weight%, Si less than 0.5 weight%, Mn less than 0.5 weight%, P less than 0.035 weight%, S less than 0.01 weight%, Cr less than 16~19 weight%, Mo less than 0.2 weight%, N less than 0.02 weight%, Cu less than 0.4 weight%, Al less than 0.04 weight%, Ni less than 0.3 weight%, C+N less than 0.03 weight%, Ti less than 0.3 weight%, Ca less than 0.005 weight%, Mg less than 0.005 weight%, Zr less than 0.01 weight%, the Fe and the inevitable impurity.