EP 2889391 A4 20160518 - THICK STEEL PLATE HAVING GOOD ULTRALOW-TEMPERATURE TOUGHNESS
Title (en)
THICK STEEL PLATE HAVING GOOD ULTRALOW-TEMPERATURE TOUGHNESS
Title (de)
DICKE STAHLPLATTE MIT SEHR GUTER ROBUSTHEIT BEI EXTREM NIEDRIGEN TEMPERATUREN
Title (fr)
PLAQUE D'ACIER ÉPAISSE AYANT UNE BONNE DURETÉ À TEMPÉRATURE ULTRABASSE
Publication
Application
Priority
- JP 2012184593 A 20120823
- JP 2013072120 W 20130819
Abstract (en)
[origin: EP2889391A1] A thick steel plate that contains definite components in the steel, said thick steel plate satisfying the following requirements: the average roundness (A) of inclusions present in the steel, the equivalent circle diameter of said inclusions exceeding 1.0 µm, is not greater than 1.8; the volume fraction (V) of the retained austenite phase at -196°C is 2.0-12.0%; and value (B) represented by formula (1) is 1.3 or greater.
IPC 8 full level
C21C 7/04 (2006.01); C21C 7/06 (2006.01); 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 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/08 (2006.01); C22C 38/12 (2006.01); C22C 38/14 (2006.01); C22C 38/40 (2006.01); C22C 38/44 (2006.01); C22C 38/48 (2006.01); C22C 38/50 (2006.01); C22C 38/54 (2006.01); C22C 38/58 (2006.01)
CPC (source: EP KR)
C21D 6/001 (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 38/04 (2013.01 - EP KR); C22C 38/06 (2013.01 - EP); C22C 38/08 (2013.01 - EP KR); C22C 38/12 (2013.01 - EP); C22C 38/14 (2013.01 - EP); C22C 38/40 (2013.01 - EP); C22C 38/44 (2013.01 - EP); C22C 38/48 (2013.01 - EP); C22C 38/50 (2013.01 - EP); C22C 38/54 (2013.01 - EP); C22C 38/58 (2013.01 - KR); C21D 2211/004 (2013.01 - EP)
Citation (search report)
- [X] WO 2012005330 A1 20120112 - NIPPON STEEL CORP [JP], et al
- [X] EP 1942203 A1 20080709 - SUMITOMO METAL IND [JP]
- [X] JP 2011219848 A 20111104 - SUMITOMO METAL IND
- [X] JP 2011219849 A 20111104 - SUMITOMO METAL IND
- [AD] JP 2001123245 A 20010508 - NIPPON STEEL CORP
- [A] JP 2004263281 A 20040924 - JFE STEEL KK
- See references of WO 2014030618A1
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 2889391 A1 20150701; EP 2889391 A4 20160518; EP 2889391 B1 20171220; CN 104583439 A 20150429; CN 104583439 B 20161012; JP 2014040648 A 20140306; JP 5833991 B2 20151216; KR 101632159 B1 20160620; KR 20150029754 A 20150318; WO 2014030618 A1 20140227
DOCDB simple family (application)
EP 13831371 A 20130819; CN 201380043453 A 20130819; JP 2012184593 A 20120823; JP 2013072120 W 20130819; KR 20157003915 A 20130819