Surface gloss, and excellent in rust resistance of ferritic stainless steel sheet and manufacturing method thereof

2011 
Stainless steel sheet of the present invention is a ferritic stainless steel plate containing, by mass%, C: 0.001 ~ 0.03%, Si: 0.01 ~ 1.0%, Mn: 0.01 ~ 1.5%, P: 0.005 ~ 0.05%, S: 0.0001 ~ 0.01%, Cr: 12 ~ 16%, N: 0.001 ~ 0.03%, Nb: 0.05 ~ 0.3%, Ti: 0.03 ~ 0.15%, Al: 0.005 ~ 0.5%, Sn: 0.01 ~ 1.0%, the remainder being Fe and inevitable impurities, and satisfying the relationship 1≤Nb / Ti≤3.5 of. Further, the stainless steel slabs having the steel composition is heated, the extraction temperature is 1080 ~ 1190 ℃, the coiling temperature after completion of hot rolling is set to 500 ~ 700 ℃, hot rolling, hot-rolled sheet embodiment will be omitted or annealing, a cold rolling or intermediate annealing interposed twice or more cold rolling, finish annealing at 850 ~ 980 ℃, thereby producing the stainless steel sheet of the present invention.
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