Ferritic stainless steel sheet with low surface roughness and manufacturing method thereof

摘要

PURPOSE: A ferritic stainless steel sheet and a manufacturing method thereof are provided to reduce orange peel during work without restricting the molding deformation amount, the granule size or the molding method. CONSTITUTION: A ferritic stainless steel sheet comprises, in weight percentage, C 0.020% or less, Si 0.60% or less, Mn 0.30% or less, P 0.035% or less, S 0.0100% or less, Cr 16%~22%, N 0.020% or less, Ti 0.01%~0.35%, Al 0.005%~0.1%, and the rest Fe and inevitable impurities. The area rate of {554}10 oriented grains existing as texture on the plane parallel to the sheet surface in the middle of the sheet thickness is less than 40% or greater than 50%. A method for manufacturing the ferritic stainless steel sheet comprises the steps of: producing a cold-rolled plate by hot-rolling a ferritic stainless steel slab, pickling it without annealing, and performing first cold-rolling at a rolling rate over 40%, producing the final cold-rolled plate by performing intermediate annealing at 750C~900C for more than 10 minutes and final cold-rolling at a rolling rate over 60%, and finally annealing the cold-rolled plate at 750C~1000C.