EP 2876179 B1 20171011 - Ni-CONTAINING STEEL PLATE
Title (en)
Ni-CONTAINING STEEL PLATE
Title (de)
NI-HALTIGE STAHLPLATTE
Title (fr)
TÔLE D'ACIER ÉPAISSE CONTENANT DU NICKEL
Publication
Application
Priority
- JP 2012162335 A 20120723
- JP 2013004399 W 20130718
Abstract (en)
[origin: EP2876179A1] An object of the present invention is to provide an Ni-containing steel plate which is low in cost and has excellent low-temperature toughness. In view of the object, the Ni-containing steel plate of the present invention has a chemical composition containing by mass% C: 0.01 % to 0.15 %, Si: 0.02 % to 0.20 %, Mn: 0.45 % to 2.00 %, P: 0.020 % or less, S: 0.005 % or less, Al: 0.005 % to 0.100 %, Ni: 5.0 % to 8.0 %, and the balance being Fe and incidental impurities, and has a microstructure containing less than 1.7 % by volume fraction of retained austenite when cooled to liquid nitrogen temperature, and having an average grain size of crystal grains surrounded by high-angle grain boundaries with an orientation difference of 15° or more of 5 µm or less by equivalent circle diameter.
IPC 8 full level
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 38/16 (2006.01); C22C 38/40 (2006.01); C22C 38/46 (2006.01); C22C 38/58 (2006.01)
CPC (source: CN EP KR US)
C21D 6/001 (2013.01 - CN EP KR US); C21D 8/02 (2013.01 - CN); C21D 8/0226 (2013.01 - CN KR); C21D 8/0263 (2013.01 - CN KR); C21D 9/46 (2013.01 - CN KR); C22C 38/00 (2013.01 - CN); C22C 38/002 (2013.01 - CN EP US); C22C 38/005 (2013.01 - CN EP US); C22C 38/02 (2013.01 - CN EP KR US); C22C 38/04 (2013.01 - CN EP KR US); C22C 38/06 (2013.01 - CN EP KR US); C22C 38/08 (2013.01 - CN EP KR US); C22C 38/12 (2013.01 - CN EP US); C22C 38/14 (2013.01 - CN EP US); C22C 38/16 (2013.01 - CN EP US); C22C 38/40 (2013.01 - CN EP US); C22C 38/46 (2013.01 - CN EP US); C22C 38/58 (2013.01 - CN); C21D 8/0226 (2013.01 - EP US); C21D 8/0263 (2013.01 - EP US); C21D 9/46 (2013.01 - EP US)
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 2876179 A1 20150527; EP 2876179 A4 20160217; EP 2876179 B1 20171011; CN 104487602 A 20150401; CN 104487602 B 20160928; IN 10853DEN2014 A 20150911; JP 2014019936 A 20140203; JP 5594329 B2 20140924; KR 101702480 B1 20170203; KR 20150023724 A 20150305; US 2015147222 A1 20150528; WO 2014017057 A1 20140130; WO 2014017057 A8 20141211
DOCDB simple family (application)
EP 13823858 A 20130718; CN 201380038704 A 20130718; IN 10853DEN2014 A 20141218; JP 2012162335 A 20120723; JP 2013004399 W 20130718; KR 20157000770 A 20130718; US 201314406405 A 20130718