Search International and National Patent Collections

1. (WO2018139207) FERRITE STAINLESS HOT-ROLLED STEEL SHEET AND PRODUCTION METHOD THEREFOR

Pub. No.:    WO/2018/139207    International Application No.:    PCT/JP2018/000559
Publication Date: Fri Aug 03 01:59:59 CEST 2018 International Filing Date: Sat Jan 13 00:59:59 CET 2018
IPC: C22C 38/00
C21D 8/02
C21D 9/46
C22C 38/48
C22C 38/54
Applicants: JFE STEEL CORPORATION
JFEスチール株式会社
Inventors: YOSHINO Masataka
吉野 正崇
FUJISAWA Mitsuyuki
藤澤 光幸
Title: FERRITE STAINLESS HOT-ROLLED STEEL SHEET AND PRODUCTION METHOD THEREFOR
Abstract:
Provided are: a ferrite stainless hot-rolled steel sheet which has sufficient corrosion resistance, and in which the occurrence of cracking is inhibited when the steel sheet is punched into a thick flange; and a production method for said steel sheet. This ferrite stainless hot-rolled steel sheet has a compositional makeup containing, in mass%, 0.001-0.020% of C, 0.05-1.00% of Si, 0.05-1.00% of Mn, 0.04% or less of P, 0.01% or less of S, 0.001-0.50% of Al, 0.001-0.020% of N, 11.0-24.0% of Cr, 0.01-2.00% of Ni, and 0.12-0.80% of Nb, the remaining portion being Fe and incidental impurities, wherein the critical stress intensity factor KIC of the steel sheet is 25 MPa·m1/2 or more.