EP 3730649 A4 20201028 - STEEL MATERIAL HAVING EXCELLENT WEAR RESISTANCE AND MANUFACTURING METHOD FOR SAME
Title (en)
STEEL MATERIAL HAVING EXCELLENT WEAR RESISTANCE AND MANUFACTURING METHOD FOR SAME
Title (de)
STAHLMATERIAL MIT AUSGEZEICHNETER VERSCHLEISSFESTIGKEIT UND HERSTELLUNGSVERFAHREN DAFÜR
Title (fr)
MATÉRIAU D'ACIER PRÉSENTANT UNE EXCELLENTE RÉSISTANCE À L'USURE ET SON PROCÉDÉ DE FABRICATION
Publication
Application
Priority
- KR 20170178865 A 20171222
- KR 2018016384 W 20181220
Abstract (en)
[origin: EP3730649A1] The purpose of the present invention is to provide a steel material and a manufacturing method for the same, wherein the steel material has excellent strength, elongation, and impact toughness as well as excellent inside quality and wear resistance. According to the present invention, provided are a steel material having excellent wear resistance and a manufacturing method for the same, wherein the steel material contains, in weight, 0.55-1.4% carbon (C), 12-23% manganese (Mn), 5% or less (excluding 0%) chromium (Cr), 5% or less (excluding 0%) copper (Cu), 0.5% or less (excluding 0%) Al, 1.0% or less (excluding 0%) Si, 0.02% or less (including 0%) S, 0.04% or less (including 0%) phosphor (P), and the balance Fe and unavoidable impurities, and has a microstructure comprising, in area, 10% or less (including 0%) carbide and the balance austenite.
IPC 8 full level
C22C 38/38 (2006.01); C21D 6/00 (2006.01); C21D 8/02 (2006.01); C21D 9/46 (2006.01); C22C 38/02 (2006.01); C22C 38/06 (2006.01); C22C 38/20 (2006.01)
CPC (source: EP KR US)
C21D 6/00 (2013.01 - EP); C21D 6/002 (2013.01 - EP US); C21D 6/005 (2013.01 - EP US); C21D 6/008 (2013.01 - US); C21D 8/005 (2013.01 - KR); C21D 8/02 (2013.01 - EP); C21D 8/0205 (2013.01 - EP US); C21D 8/0226 (2013.01 - EP US); C21D 9/0081 (2013.01 - KR); C21D 9/46 (2013.01 - EP US); C22C 38/002 (2013.01 - US); C22C 38/02 (2013.01 - EP KR US); C22C 38/04 (2013.01 - US); C22C 38/06 (2013.01 - EP KR US); C22C 38/20 (2013.01 - EP KR US); C22C 38/38 (2013.01 - EP KR); C21D 2211/001 (2013.01 - EP KR US); C21D 2211/004 (2013.01 - KR)
Citation (search report)
- [XI] EP 2799582 A1 20141105 - POSCO [KR]
- [XI] US 2014373588 A1 20141225 - LEE SOON-GI [KR], et al
- [XI] WO 2017111510 A1 20170629 - POSCO [KR]
- [XI] KR 20160075927 A 20160630 - POSCO [KR]
- [XI] US 2012288396 A1 20121115 - LEE SOON-GI [KR], et al
- [XI] US 2017349983 A1 20171207 - JIN HYUN-WOO [US], et al
- [XI] WO 2017105134 A1 20170622 - POSCO [KR]
- [XI] EP 3088555 A1 20161102 - POSCO [KR]
- [I] US 2014261918 A1 20140918 - JIN HYUNWOO [US], et al
- See references of WO 2019125023A1
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3730649 A1 20201028; EP 3730649 A4 20201028; CN 111492082 A 20200804; CN 111492082 B 20211026; KR 102020381 B1 20190910; KR 20190076795 A 20190702; US 2021164068 A1 20210603; WO 2019125023 A1 20190627; WO 2019125023 A8 20200227
DOCDB simple family (application)
EP 18890993 A 20181220; CN 201880083118 A 20181220; KR 20170178865 A 20171222; KR 2018016384 W 20181220; US 201816954672 A 20181220