EP 3418411 A4 20190821 - STEEL
Title (en)
STEEL
Title (de)
STAHL
Title (fr)
ACIER
Publication
Application
Priority
JP 2016054852 W 20160219
Abstract (en)
[origin: EP3418411A1] According to an aspect of the present invention, there is provided a steel containing, by mass%, C: 0.08% to 0.12%, Si: 0.05% to 0.50%, Mn: 1.00% to 3.00%, P: 0.040% or less, S: 0.020% or less, Cr: 1.0% to 2.5%, Cu: 0.01% to 0.50%, Ni: 0.75% to 3.20%, Mo: 0.10% to 0.50%, Nb: 0.005% to 0.050%, Al: 0.010% to 0.100%, N: 0.0050% to 0.0150%, V: 0% to 0.300%, Ca: 0% to 0.0100%, Zr: 0% to 0.0100%, Mg: 0% to 0.0100%, and a remainder including Fe and impurities, in which a number density of Mn sulfides having an equivalent circle diameter of more than 5 µm is 0 pieces/mm 2 to 10 pieces/mm 2 , and an average aspect ratio of the Mn sulfides having an equivalent circle diameter of 1.0 µm to 5.0 µm is 1.0 or more and 10.0 or less.
IPC 8 full level
C22C 38/00 (2006.01); C21D 8/06 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/42 (2006.01); C22C 38/44 (2006.01); C22C 38/46 (2006.01); C22C 38/48 (2006.01); C22C 38/50 (2006.01); C22C 38/58 (2006.01)
CPC (source: EP KR US)
C21D 8/06 (2013.01 - KR); C22C 38/00 (2013.01 - EP US); C22C 38/001 (2013.01 - EP KR US); C22C 38/002 (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 38/42 (2013.01 - EP KR US); C22C 38/44 (2013.01 - EP KR US); C22C 38/46 (2013.01 - EP KR US); C22C 38/48 (2013.01 - EP KR US); C22C 38/50 (2013.01 - EP US); C22C 38/58 (2013.01 - EP KR US); C21D 8/06 (2013.01 - EP US); C21D 8/065 (2013.01 - EP US)
Citation (search report)
- [Y] EP 2977479 A1 20160127 - KOBE STEEL LTD [JP]
- [Y] JP S6240345 A 19870221 - NIPPON KOKAN KK
- [Y] US 2013048156 A1 20130228 - HASHIMURA MASAYUKI [JP], et al
- [Y] EP 2963138 A1 20160106 - JFE STEEL CORP [JP]
- [A] DE 102005034140 A1 20070125 - RUD KETTEN RIEGER & DIETZ [DE]
- [A] EP 1942203 A1 20080709 - SUMITOMO METAL IND [JP]
- [A] EP 2871255 A1 20150513 - NIPPON STEEL & SUMITOMO METAL CORP [JP]
- [A] EP 2764946 A1 20140813 - JFE STEEL CORP [JP]
- [A] WO 2015147067 A1 20151001 - KOBE STEEL LTD [JP]
- [A] EP 2492361 A2 20120829 - DALMINE SPA [IT]
- [A] EP 1025272 A1 20000809 - EXXONMOBIL UPSTREAM RES CO [US], et al
- [A] EP 2975149 A1 20160120 - NIPPON STEEL & SUMITOMO METAL CORP [JP]
- See references of WO 2017141424A1
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 3418411 A1 20181226; EP 3418411 A4 20190821; EP 3418411 B1 20201104; CN 108603260 A 20180928; CN 108603260 B 20210813; JP 6590000 B2 20191016; JP WO2017141424 A1 20181122; KR 102183900 B1 20201127; KR 20180099873 A 20180905; US 2019032178 A1 20190131; WO 2017141424 A1 20170824
DOCDB simple family (application)
EP 16890565 A 20160219; CN 201680081673 A 20160219; JP 2016054852 W 20160219; JP 2017567913 A 20160219; KR 20187022566 A 20160219; US 201616072757 A 20160219