EP 3392364 A4 20181024 - HIGH HARDNESS ABRASION RESISTANT STEEL WITH EXCELLENT TOUGHNESS AND CUTTING CRACK RESISTANCE, AND METHOD FOR MANUFACTURING SAME
Title (en)
HIGH HARDNESS ABRASION RESISTANT STEEL WITH EXCELLENT TOUGHNESS AND CUTTING CRACK RESISTANCE, AND METHOD FOR MANUFACTURING SAME
Title (de)
HOCHHARTER ABRIEBFESTER STAHL MIT HERVORRAGENDER FESTIGKEIT UND SCHNEIDRISSBESTÄNDIGKEIT UND VERFAHREN ZUR HERSTELLUNG DAVON
Title (fr)
ACIER DE HAUTE DURETÉ RÉSISTANT À L'ABRASION AVEC UNE TÉNACITÉ ET UNE RÉSISTANCE À LA FISSURATION DE COUPE EXCELLENTES, ET SON PROCÉDÉ DE FABRICATION
Publication
Application
Priority
- KR 20150179009 A 20151215
- KR 2016013491 W 20161122
Abstract (en)
[origin: EP3392364A1] The present invention relates to a high hardness abrasion resistant steel having excellent toughness and cutting crack resistance, and a method for manufacturing the same. A high hardness abrasion resistant steel according to one aspect of the present invention has a composition containing, by weight ratio, 2.1 to 4.0% of Mn, 0.15 to 0.2% of C, 0.02 to 0.5% of Si, 0.2 to 0.7% of Cr, the remainder being Fe and other unavoidable impurities, has a microstructure in which the prior austenite grain size is 25 µm or less and martensite is the main structure, and satisfies the condition where Ac3-Ac1 is 100°C or less.
IPC 8 full level
C21D 8/02 (2006.01); C22C 38/02 (2006.01); C22C 38/26 (2006.01); C22C 38/32 (2006.01); C22C 38/38 (2006.01)
CPC (source: EP US)
C21D 1/18 (2013.01 - EP US); C21D 6/002 (2013.01 - EP US); C21D 6/005 (2013.01 - EP US); C21D 6/008 (2013.01 - EP US); C21D 8/02 (2013.01 - EP US); C21D 8/0205 (2013.01 - EP US); C21D 8/0263 (2013.01 - EP US); C21D 9/46 (2013.01 - EP US); C22C 38/02 (2013.01 - EP US); C22C 38/26 (2013.01 - EP US); C22C 38/28 (2013.01 - EP US); C22C 38/32 (2013.01 - EP US); C22C 38/38 (2013.01 - EP US); C21D 2211/001 (2013.01 - EP US); C21D 2211/008 (2013.01 - EP US)
Citation (search report)
- [I] JP 2004300474 A 20041028 - JFE STEEL KK
- [A] WO 2015115086 A1 20150806 - JFE STEEL CORP [JP]
- [A] WO 2014156079 A1 20141002 - JFE STEEL CORP [JP]
- [A] EP 2881486 A1 20150610 - BAOSHAN IRON & STEEL [CN]
- [A] WO 2014045552 A1 20140327 - JFE STEEL CORP [JP]
- See references of WO 2017104995A1
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 3392364 A1 20181024; EP 3392364 A4 20181024; EP 3392364 B1 20200729; CN 108368589 A 20180803; CN 108368589 B 20201020; JP 2019504192 A 20190214; JP 6691967 B2 20200513; KR 101736621 B1 20170530; US 2019010571 A1 20190110; WO 2017104995 A1 20170622
DOCDB simple family (application)
EP 16875937 A 20161122; CN 201680073115 A 20161122; JP 2018530497 A 20161122; KR 20150179009 A 20151215; KR 2016013491 W 20161122; US 201616062566 A 20161122