EP 3305930 A4 20181205 - STEEL SHEET AND METHOD FOR PRODUCING SAME
Title (en)
STEEL SHEET AND METHOD FOR PRODUCING SAME
Title (de)
STAHLBLECH UND VERFAHREN ZUR HERSTELLUNG DAVON
Title (fr)
TÔLE D'ACIER ET SON PROCÉDÉ DE PRODUCTION
Publication
Application
Priority
- JP 2015106755 A 20150526
- JP 2015189883 A 20150928
- JP 2016065629 W 20160526
Abstract (en)
[origin: EP3305930A1] A steel sheet improved in hardenability and material formability having a predetermined chemical composition, characterized in that, in the metal structure of the steel sheet, an average grain size of carbides is 0.4 µm to 2.0 µm, an area ratio of pearlite is 6% or less, when a number of carbides in ferrite grains is A and a number of carbides at ferrite grain boundaries is B, B/A>1, and when an X-ray diffraction intensity at {211}<011> at a plane of a part of 1/2 sheet thickness of the steel sheet is denoted by "I1" and an X-ray diffraction intensity at {100}<011> is denoted by "10", I1/I0<1 is satisfied, and the steel sheet has a Vickers hardness of 100 HV to 150 HV.
IPC 8 full level
C22C 38/00 (2006.01); C21D 6/00 (2006.01); C21D 8/02 (2006.01); C21D 9/46 (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 38/32 (2006.01); C22C 38/38 (2006.01); C22C 38/60 (2006.01)
CPC (source: EP KR US)
C21D 6/002 (2013.01 - EP US); C21D 6/005 (2013.01 - EP US); C21D 6/008 (2013.01 - EP US); C21D 8/02 (2013.01 - EP US); C21D 8/0205 (2013.01 - EP US); C21D 8/0226 (2013.01 - EP KR US); C21D 8/0263 (2013.01 - EP KR US); C21D 9/46 (2013.01 - EP KR US); C22C 38/00 (2013.01 - EP US); C22C 38/001 (2013.01 - EP US); C22C 38/002 (2013.01 - EP US); C22C 38/02 (2013.01 - EP US); C22C 38/06 (2013.01 - EP US); C22C 38/20 (2013.01 - EP US); C22C 38/22 (2013.01 - EP KR US); C22C 38/24 (2013.01 - EP US); C22C 38/26 (2013.01 - EP US); C22C 38/28 (2013.01 - EP KR US); C22C 38/32 (2013.01 - EP KR US); C22C 38/38 (2013.01 - EP US); C22C 38/60 (2013.01 - EP US); C21D 2211/005 (2013.01 - EP KR US); C21D 2211/009 (2013.01 - EP US); C23G 1/00 (2013.01 - US)
Citation (search report)
- [Y] JP 2010235977 A 20101021 - NISSHIN STEEL CO LTD
- [Y] JP 5660220 B2 20150128
- [Y] JP 2011168842 A 20110901 - NIPPON STEEL CORP
- [Y] JP 2008274416 A 20081113 - NIPPON STEEL CORP
- [Y] US 2010282376 A1 20101111 - KIMURA HIDEYUKI [JP], et al
- [A] JP 2015081359 A 20150427 - JFE STEEL CORP
- [A] JP 5641086 B2 20141217
- [A] JP 2006265604 A 20061005 - JFE STEEL KK
- [A] JP 5499984 B2 20140521
- [A] US 2013167985 A1 20130704 - SAITO HAYATO [JP], et al
- See references of WO 2016190396A1
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
DOCDB simple family (publication)
EP 3305930 A1 20180411; EP 3305930 A4 20181205; BR 112017024957 A2 20180731; CN 107614726 A 20180119; CN 107614726 B 20200207; JP 6119924 B1 20170426; JP WO2016190396 A1 20170615; KR 102029566 B1 20191007; KR 20170138510 A 20171215; MX 2017014938 A 20180413; TW 201704501 A 20170201; TW I612154 B 20180121; US 2018135146 A1 20180517; WO 2016190396 A1 20161201
DOCDB simple family (application)
EP 16800100 A 20160526; BR 112017024957 A 20160526; CN 201680030094 A 20160526; JP 2016065629 W 20160526; JP 2016559669 A 20160526; KR 20177033295 A 20160526; MX 2017014938 A 20160526; TW 105116486 A 20160526; US 201615576682 A 20160526