Production mannered null mass of the high corrosion-resistant stainless steel plate for the armor building material which is superior in generation prevention talent of band-like

摘要

PROBLEM TO BE SOLVED: To provide a high weatherability ferritic stainless steel sheet in which strip-shaped or stripe-shaped unevenness and patterns along the rolling direction of the steel sheet is inconspicuous in the appearance after external building material execution and excellent in designing properties. ;SOLUTION: A bright-annealed steel sheet or an annealed and pickled steel sheet of ferritic stainless steel has a compsn. contg., by mass, 16 to 35% Cr, 0.05 to 0.5% Ti, 0 to 6% Mo (including the case of no addition), 0 to 1.0% Nb (including the case of no addition) and 0.005 to 0.025% N, in which the content of C is limited to ≤0.015%, and the lightness range ΔL within the sheet width in the surface of the steel sheet in a direction perpendicular to the rolling direction is ≤5. This is obtd. by subjecting a cast slab having ≥15 vol.% equi-axed crystal ratio to hot rolling, grinding the surface by ≥10 μm, next, subjecting it to cold rolling including process annealing or not including that according to Cr content or the like and moreover executing bright annealing or annealing and pickling.;COPYRIGHT: (C)2000,JPO