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1. (WO2013146815) HEAT-RESISTANT COLD ROLLED FERRITIC STAINLESS STEEL SHEET, HOT ROLLED FERRITIC STAINLESS STEEL SHEET FOR COLD ROLLING RAW MATERIAL, AND METHODS FOR PRODUCING SAME

Pub. No.:    WO/2013/146815    International Application No.:    PCT/JP2013/058856
Publication Date: Fri Oct 04 01:59:59 CEST 2013 International Filing Date: Wed Mar 27 00:59:59 CET 2013
IPC: C22C 38/00
C21D 9/46
C22C 38/32
C22C 38/54
Applicants: NIPPON STEEL & SUMIKIN STAINLESS STEEL CORPORATION
新日鐵住金ステンレス株式会社
Inventors: HAMADA Junichi
濱田 純一
KOYAMA Yuji
小山 祐司
INOUE Yoshiharu
井上 宜治
KOMORI Tadashi
小森 唯志
FUDANOKI Fumio
札軒 富美夫
TANOUE Toshio
田上 利男
ONO Naoto
小野 直人
Title: HEAT-RESISTANT COLD ROLLED FERRITIC STAINLESS STEEL SHEET, HOT ROLLED FERRITIC STAINLESS STEEL SHEET FOR COLD ROLLING RAW MATERIAL, AND METHODS FOR PRODUCING SAME
Abstract:
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.