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1. (WO2018199062) HOT-ROLLED AND ANNEALED FERRITIC STAINLESS STEEL SHEET, AND METHOD FOR MANUFACTURING SAME

Pub. No.:    WO/2018/199062    International Application No.:    PCT/JP2018/016545
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Wed Apr 25 01:59:59 CEST 2018
IPC: C22C 38/00
C21D 9/46
C22C 38/50
C22C 38/54
Applicants: JFE STEEL CORPORATION
JFEスチール株式会社
Inventors: YOSHINO Masataka
吉野 正崇
INOUE Keishi
井上 佳士
FUJISAWA Mitsuyuki
藤澤 光幸
Title: HOT-ROLLED AND ANNEALED FERRITIC STAINLESS STEEL SHEET, AND METHOD FOR MANUFACTURING SAME
Abstract:
Provided are: a hot-rolled and annealed ferritic stainless steel sheet having a sufficient corrosion resistance, and capable of suppressing cracking while performing a punching process on a thick flange; and a method for manufacturing the same. The hot-rolled and annealed ferritic stainless steel sheet contains 0.00-0.020 mass% of C, 0.05-1.00 mass% of Si, 0.05-1.00 mass% of Mn, at most 0.04 mass% of P, at most 0.01 mass% of S, 0.001-0.100 mass% of Al, 10.0-19.0 mass% of Cr, 0.65-1.50 mass% of Ni, 0.10-0.40 mass% of Ti, and 0.001-0.020 mass% of N, and the remainder comprising Fe and inevitable impurities, wherein the threshold stress intensity factor KIC is at least 35 MPa∙m1/2.