EP 4019656 A1 20220629 - STEEL AND METHOD FOR MANUFACTURING SAME
Title (en)
STEEL AND METHOD FOR MANUFACTURING SAME
Title (de)
STAHL UND VERFAHREN ZUR HERSTELLUNG DAVON
Title (fr)
ACIER, ET PROCÉDÉ DE FABRICATION DE CELUI-CI
Publication
Application
Priority
- JP 2019151345 A 20190821
- JP 2020031165 W 20200818
Abstract (en)
The steel of the present disclosure includes: a chemical composition containing, in mass%, C: 0.100% or more and 0.700% or less; Si: 1.00% or less; Mn: 20.0% or more and 40.0% or less; P: 0.030% or less; S: 0.0070 % or less; Al: 0.01% or more and 5.00% or less; Cr: 0.5% or more and 7.0% or less; N: 0.0050% or more and 0.0500% or less; O: 0.0050% or less; Ti: 0.005% or less; and Nb: 0.005% or less with the balance being Fe and inevitable impurities; a microstructure having austenite as a base phase and an average grain size of 80µm or more; an absorbed energy of a Charpy impact test at - 269°C of 150 J or more; and a total elongation of a tensile test at -269°C of 30% or more.
IPC 8 full level
C21D 6/00 (2006.01); C21D 8/02 (2006.01); C21D 9/46 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/06 (2006.01); C22C 38/20 (2006.01); C22C 38/22 (2006.01); C22C 38/24 (2006.01); C22C 38/26 (2006.01); C22C 38/28 (2006.01); C22C 38/38 (2006.01); C22C 38/48 (2006.01); C22C 38/50 (2006.01); C22C 38/58 (2006.01)
CPC (source: EP KR)
C21D 6/005 (2013.01 - EP); C21D 8/02 (2013.01 - EP); C21D 8/0205 (2013.01 - EP); C21D 8/0226 (2013.01 - EP KR); C21D 8/0247 (2013.01 - KR); C21D 8/0263 (2013.01 - EP); C21D 8/0273 (2013.01 - EP); C21D 9/46 (2013.01 - EP); C22C 38/001 (2013.01 - EP KR); C22C 38/002 (2013.01 - EP); C22C 38/005 (2013.01 - EP); C22C 38/02 (2013.01 - EP); C22C 38/06 (2013.01 - EP KR); C22C 38/20 (2013.01 - EP); C22C 38/22 (2013.01 - EP); C22C 38/24 (2013.01 - EP); C22C 38/26 (2013.01 - EP KR); C22C 38/28 (2013.01 - EP KR); C22C 38/38 (2013.01 - EP KR); C22C 38/48 (2013.01 - EP); C22C 38/50 (2013.01 - EP); C22C 38/58 (2013.01 - EP KR); C21D 2211/001 (2013.01 - KR)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 4019656 A1 20220629; EP 4019656 A4 20220629; CN 114302977 A 20220408; CN 114302977 B 20221206; JP 6947330 B2 20211013; JP WO2021033694 A1 20210913; KR 20220030292 A 20220310; TW 202113100 A 20210401; TW I726798 B 20210501; WO 2021033694 A1 20210225
DOCDB simple family (application)
EP 20853747 A 20200818; CN 202080058683 A 20200818; JP 2020031165 W 20200818; JP 2021510241 A 20200818; KR 20227004123 A 20200818; TW 109128432 A 20200820