HEAT-RESISTANT COLD ROLLED FERRITIC STAINLESS STEEL SHEET, HOT ROLLED FERRITIC STAINLESS STEEL SHEET FOR COLD ROLLING RAW MATERIAL, AND METHODS FOR PRODUCING SAME.

摘要

Provided is a heat-resistant cold rolled ferritic stainless steel sheet which contains, in terms of mass %, 0.02% or less of C, 0.1-1.0% of Si, greater than 0.6% to 1.5% of Mn, 0.01-0.05% of P, 0.0001-0.0100% of S, 13.0-20.0% of Cr, 0.1-3.0% of Mo, 0.005-0.20% of Ti, 0.3-1.0% of Nb, 0.0002-0.0050% of B, 0.005-0.50% of Al and 0.02% or less of N, with the remainder being Fe and unavoidable impurities, and which is characterized in that the areal proportion of grains having a {111} orientation in a region between a surface layer and a depth of t/4 (t is the sheet thickness) is 20% or higher, the areal proportion of grains having a {111} orientation in a region between a depth of t/4 and a depth of t/2 is 40% or higher, and the areal proportion of grains having a {011} orientation in the overall thickness region is 15% or lower.