EP 3575428 A4 20200722 - STEEL MATERIAL, AND STEEL MATERIAL MANUFACTURING METHOD
Title (en)
STEEL MATERIAL, AND STEEL MATERIAL MANUFACTURING METHOD
Title (de)
STAHLMATERIAL UND STAHLMATERIALHERSTELLUNGSVERFAHREN
Title (fr)
MATÉRIAU EN ACIER ET SON PROCÉDÉ DE FABRICATION
Publication
Application
Priority
- JP 2017009977 A 20170124
- JP 2018001750 W 20180122
Abstract (en)
[origin: EP3575428A1] A steel material that has a yield strength in a range of 965 to 1069 MPa (140 ksi grade) and also have excellent SSC resistance are provided. The steel material according to the present disclosure contains a chemical composition consisting of, in mass%, C: more than 0.50 to 0.80%, Si: 0.05 to 1.00%, Mn: 0.05 to 1.00%, P: 0.025% or less, S: 0.0100% or less, Al: 0.005 to 0.100%, Cr: 0.20 to 1.50%, Mo: 0.25 to 1.50%, Ti: 0.002 to 0.050%, B: 0.0001 to 0.0050%, N: 0.002 to 0.010% and O: 0.0100% or less, with the balance being Fe and impurities. The steel material contains an amount of dissolved C within a range of 0.010 to 0.060 mass%. The steel material also has a yield strength within a range of 965 to 1069 MPa, and a yield ratio of the steel material is 90% or more.
IPC 8 full level
C21D 6/00 (2006.01); C21D 8/10 (2006.01); C21D 9/08 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/22 (2006.01); C22C 38/24 (2006.01); C22C 38/26 (2006.01); C22C 38/28 (2006.01); C22C 38/32 (2006.01); C22C 38/54 (2006.01)
CPC (source: EP RU US)
C21D 6/004 (2013.01 - EP); C21D 6/005 (2013.01 - EP); C21D 6/008 (2013.01 - EP); C21D 8/00 (2013.01 - RU); C21D 8/005 (2013.01 - US); C21D 8/02 (2013.01 - RU); C21D 8/10 (2013.01 - RU); C21D 8/105 (2013.01 - EP US); C21D 9/085 (2013.01 - EP US); C22C 38/001 (2013.01 - EP); C22C 38/02 (2013.01 - EP US); C22C 38/04 (2013.01 - EP US); C22C 38/06 (2013.01 - EP US); C22C 38/22 (2013.01 - EP); C22C 38/24 (2013.01 - EP); C22C 38/26 (2013.01 - EP); C22C 38/28 (2013.01 - EP); C22C 38/32 (2013.01 - EP RU); C22C 38/42 (2013.01 - US); C22C 38/44 (2013.01 - US); C22C 38/46 (2013.01 - US); C22C 38/48 (2013.01 - US); C22C 38/50 (2013.01 - US); C22C 38/52 (2013.01 - US); C22C 38/54 (2013.01 - EP RU US)
Citation (search report)
- [IA] WO 2016093161 A1 20160616 - NIPPON STEEL & SUMITOMO METAL CORP [JP] & EP 3231884 A1 20171018 - NIPPON STEEL & SUMITOMO METAL CORP [JP]
- [A] EP 2403970 A1 20120111 - VALLOUREC MANNESMANN OIL & GAS [FR]
- [AD] JP 2012026030 A 20120209 - JFE STEEL CORP
- [A] EP 2865775 A1 20150429 - NIPPON STEEL & SUMITOMO METAL CORP [JP]
- See references of WO 2018139400A1
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 3575428 A1 20191204; EP 3575428 A4 20200722; AU 2018213593 A1 20190801; BR 112019014676 A2 20200526; CA 3049859 A1 20180802; CN 110234779 A 20190913; JP 6747524 B2 20200826; JP WO2018139400 A1 20191107; MX 2019008642 A 20190923; RU 2725389 C1 20200702; US 2019376167 A1 20191212; WO 2018139400 A1 20180802
DOCDB simple family (application)
EP 18745316 A 20180122; AU 2018213593 A 20180122; BR 112019014676 A 20180122; CA 3049859 A 20180122; CN 201880007922 A 20180122; JP 2018001750 W 20180122; JP 2018564551 A 20180122; MX 2019008642 A 20180122; RU 2019126325 A 20180122; US 201816476704 A 20180122