EP 3115475 A4 20170913 - MEDIUM-/HIGH-CARBON STEEL SHEET AND METHOD FOR MANUFACTURING SAME
Title (en)
MEDIUM-/HIGH-CARBON STEEL SHEET AND METHOD FOR MANUFACTURING SAME
Title (de)
STAHLBLECH MIT MITTELHOHEM/HOHEM KOHLENSTOFFGEHALT UND VERFAHREN ZUR HERSTELLUNG DAVON
Title (fr)
TÔLE D'ACIER À TENEUR EN CARBONE MOYENNE/ÉLEVÉE ET SON PROCÉDÉ DE FABRICATION
Publication
Application
Priority
- JP 2014045689 A 20140307
- JP 2015056825 W 20150309
Abstract (en)
[origin: EP3115475A1] A middle/high carbon steel sheet according to an aspect of the present invention is a steel sheet, in which composition thereof contains, by mass%, C: 0.10% to 1.50%, Si: 0.01% to 1.00%, Mn: 0.01% to 3.00%, P: 0.0001% to 0.1000%, and S: 0.0001 % to 0.1000%, and a remainder consisting of Fe and impurities, in which the steel sheet has a structure in which a total volume percentage of a martensite, a bainite, a pearlite, and a residual austenite is equal to or lower than 5.0%, and a remainder thereof is a ferrite and carbides, in which a spheroidizing ratio of carbide particles is 70% to 99%, and in which a proportion of a number of the carbide particles including a crystal interface at which an orientation difference is equal to or greater than 5° in the carbide particles is equal to or lower than 20% of a total number of the carbide particles.
IPC 8 full level
C22C 38/00 (2006.01); C21D 1/32 (2006.01); C21D 8/02 (2006.01); C21D 8/04 (2006.01); C21D 9/46 (2006.01); C21D 9/48 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/08 (2006.01); C22C 38/12 (2006.01); C22C 38/14 (2006.01); C22C 38/16 (2006.01); C22C 38/32 (2006.01); C22C 38/60 (2006.01)
CPC (source: EP KR US)
C21D 1/32 (2013.01 - EP US); C21D 8/0226 (2013.01 - EP KR US); C21D 8/0236 (2013.01 - EP KR US); C21D 8/0263 (2013.01 - EP KR US); C21D 8/0473 (2013.01 - EP US); C21D 9/46 (2013.01 - EP US); C21D 9/48 (2013.01 - KR); C22C 38/001 (2013.01 - EP US); C22C 38/002 (2013.01 - EP US); C22C 38/005 (2013.01 - EP US); C22C 38/008 (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 US); C22C 38/08 (2013.01 - EP US); C22C 38/12 (2013.01 - EP US); C22C 38/14 (2013.01 - EP US); C22C 38/16 (2013.01 - EP US); C22C 38/32 (2013.01 - EP US); C22C 38/60 (2013.01 - EP KR US); C21D 2201/05 (2013.01 - EP US); C21D 2211/001 (2013.01 - EP US); C21D 2211/002 (2013.01 - EP US); C21D 2211/003 (2013.01 - EP US); C21D 2211/004 (2013.01 - EP US); C21D 2211/005 (2013.01 - EP KR US); C21D 2211/008 (2013.01 - EP US); C21D 2211/009 (2013.01 - EP US)
Citation (search report)
- [X] JP 2007119883 A 20070517 - JFE STEEL KK
- [A] JP 2008291304 A 20081204 - JFE STEEL KK
- [A] JP 2007270331 A 20071018 - JFE STEEL KK
- See references of WO 2015133644A1
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 3115475 A1 20170111; EP 3115475 A4 20170913; EP 3115475 B1 20190828; CN 106062231 A 20161026; CN 106062231 B 20180911; ES 2750615 T3 20200326; JP 6274304 B2 20180207; JP WO2015133644 A1 20170406; KR 101875298 B1 20180705; KR 20160119220 A 20161012; MX 2016011437 A 20161116; PL 3115475 T3 20200331; TW 201542835 A 20151116; TW I608106 B 20171211; US 2017067132 A1 20170309; WO 2015133644 A1 20150911
DOCDB simple family (application)
EP 15758268 A 20150309; CN 201580011954 A 20150309; ES 15758268 T 20150309; JP 2015056825 W 20150309; JP 2016506209 A 20150309; KR 20167024903 A 20150309; MX 2016011437 A 20150309; PL 15758268 T 20150309; TW 104107427 A 20150309; US 201515123119 A 20150309