EP 3395984 B1 20200129 - STEEL SHEET HAVING EXCELLENT PWHT RESISTANCE FOR LOW-TEMPERATURE PRESSURE VESSEL AND METHOD FOR MANUFACTURING SAME
Title (en)
STEEL SHEET HAVING EXCELLENT PWHT RESISTANCE FOR LOW-TEMPERATURE PRESSURE VESSEL AND METHOD FOR MANUFACTURING SAME
Title (de)
STAHLBLECH MIT AUSGEZEICHNETER PWHT-BESTÄNDIGKEIT FÜR NIEDERTEMPERATURDRUCKBEHÄLTER UND VERFAHREN ZUR HERSTELLUNG
Title (fr)
TÔLE D'ACIER PRÉSENTANT UNE EXCELLENTE RÉSISTANCE AU TRAITEMENT THERMIQUE APRÈS SOUDAGE POUR RÉCIPIENT SOUS PRESSION À BASSE TEMPÉRATURE ET SON PROCÉDÉ DE FABRICATION
Publication
Application
Priority
- KR 20150183528 A 20151222
- KR 2016012566 W 20161103
Abstract (en)
[origin: EP3395984A1] The present invention relates to a steel plate having excellent PWHT resistance and low-temperature toughness for a low-temperature pressure vessel and a method for manufacturing the same, wherein the steel plate comprises, in terms of wt%, 0.07-0.17% of C, 0.15-0.40% of Si, 0.3-0.7% of Mn, 0.012% or less of P, 0.015% or less of S, 3.0-4.0% of Ni, 0.03-0.25% of W, and the balance of Fe and inevitable impurities, has a micro-structure comprising 25-80 area% of tempered bainite and the balance of tempered martensite, and has a tensile strength of 600 MPa or more.
IPC 8 full level
C22C 38/12 (2006.01); C21D 1/25 (2006.01); C21D 6/00 (2006.01); C21D 8/02 (2006.01); C21D 9/50 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/08 (2006.01)
CPC (source: EP US)
C21D 1/25 (2013.01 - EP US); C21D 6/001 (2013.01 - EP US); C21D 6/005 (2013.01 - EP US); C21D 6/008 (2013.01 - EP US); C21D 8/0226 (2013.01 - EP US); C21D 8/0263 (2013.01 - EP US); C21D 9/50 (2013.01 - EP US); C22C 38/02 (2013.01 - EP US); C22C 38/04 (2013.01 - EP US); C22C 38/08 (2013.01 - EP US); C22C 38/12 (2013.01 - EP US); C21D 2211/002 (2013.01 - EP US); C21D 2211/008 (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 3395984 A1 20181031; EP 3395984 A4 20181226; EP 3395984 B1 20200129; CN 108431272 A 20180821; CN 108431272 B 20200728; JP 2019505672 A 20190228; JP 6700400 B2 20200527; KR 101758497 B1 20170727; KR 20170075050 A 20170703; US 2018371568 A1 20181227; WO 2017111290 A1 20170629; WO 2017111290 A8 20171221
DOCDB simple family (application)
EP 16879157 A 20161103; CN 201680075744 A 20161103; JP 2018532673 A 20161103; KR 20150183528 A 20151222; KR 2016012566 W 20161103; US 201616063990 A 20161103