EP 3260566 A4 20180912 - HOT-ROLLED STEEL SHEET
Title (en)
HOT-ROLLED STEEL SHEET
Title (de)
WARMGEWALZTES STAHLBLECH
Title (fr)
TÔLE D'ACIER LAMINÉE À CHAUD
Publication
Application
Priority
JP 2015054860 W 20150220
Abstract (en)
[origin: EP3260566A1] A hot-rolled steel sheet includes a predetermined chemical composition, and a structure which includes, by area ratio, ferrite and bainite in a range of 75% to 95% in total, and martensite in a range of 5% to 20%, in which in the structure, in a case where a boundary having an orientation difference of equal to or greater than 15° is set as a grain boundary, and an area which is surrounded by the grain boundary, and has an equivalent circle diameter of equal to or greater than 0.3 µm is defined as a grain, the ratio of the grains having an intragranular orientation difference in a range of 5° to 14° is, by area ratio, in a range of 10% to 60%.
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 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/08 (2006.01); C22C 38/14 (2006.01); C22C 38/16 (2006.01); C22C 38/18 (2006.01); C22C 38/58 (2006.01)
CPC (source: EP KR US)
C21D 6/001 (2013.01 - EP US); C21D 6/002 (2013.01 - EP US); C21D 6/005 (2013.01 - EP US); C21D 6/008 (2013.01 - EP US); C21D 8/0226 (2013.01 - EP 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 38/005 (2013.01 - EP US); C22C 38/02 (2013.01 - EP KR US); C22C 38/04 (2013.01 - EP KR US); C22C 38/06 (2013.01 - EP KR US); C22C 38/08 (2013.01 - EP US); C22C 38/14 (2013.01 - EP US); C22C 38/16 (2013.01 - EP US); C22C 38/18 (2013.01 - EP US); C22C 38/58 (2013.01 - EP US); C21D 2211/002 (2013.01 - EP KR US); C21D 2211/005 (2013.01 - EP KR US); C21D 2211/008 (2013.01 - EP KR US)
Citation (search report)
- [I] EP 1149925 A1 20011031 - NIPPON KOKAN KK [JP]
- [Y] EP 1559797 A1 20050803 - JFE STEEL CORP [JP]
- [Y] EP 2088218 A1 20090812 - NIPPON STEEL CORP [JP]
- [A] EP 1350859 A1 20031008 - KAWASAKI STEEL CO [JP]
- See references of WO 2016132545A1
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 3260566 A1 20171227; EP 3260566 A4 20180912; EP 3260566 B1 20191127; BR 112017016799 A2 20180403; CN 107250404 A 20171013; CN 107250404 B 20190426; ES 2763574 T3 20200529; JP 6358385 B2 20180718; JP WO2016132545 A1 20171130; KR 101981876 B1 20190523; KR 20170107041 A 20170922; MX 2017010537 A 20171214; PL 3260566 T3 20200824; TW 201638356 A 20161101; TW I600774 B 20171001; US 2018023162 A1 20180125; WO 2016132545 A1 20160825
DOCDB simple family (application)
EP 15882647 A 20150220; BR 112017016799 A 20150220; CN 201580076254 A 20150220; ES 15882647 T 20150220; JP 2015054860 W 20150220; JP 2017500254 A 20150220; KR 20177023370 A 20150220; MX 2017010537 A 20150220; PL 15882647 T 20150220; TW 105105137 A 20160222; US 201515549837 A 20150220