EP 2380997 A1 20111026 - STEEL FOR WELDED STRUCTURES EXCELLENT IN HIGH TEMPERATURE STRENGTH AND LOW TEMPERATURE TOUGHNESS AND METHOD OF PRODUCTION OF SAME
Title (en)
STEEL FOR WELDED STRUCTURES EXCELLENT IN HIGH TEMPERATURE STRENGTH AND LOW TEMPERATURE TOUGHNESS AND METHOD OF PRODUCTION OF SAME
Title (de)
STAHL FÜR GESCHWEIßTE KONSTRUKTIONEN MIT EXZELLENTER HOCHTEMPERATURFESTIGKEIT UND TIEFTEMPERATURZÄHIGKEIT UND VERFAHREN ZU SEINER HERSTELLUNG
Title (fr)
ACIER POUR CONSTRUCTION SOUDÉE AYANT UNE EXCELLENTE RÉSISTANCE À TEMPÉRATURE ÉLEVÉE ET UNE EXCELLENTE RÉSILIENCE AUX BASSES TEMPÉRATURES ET PROCÉDÉS DE PRODUCTION DE L'ACIER
Publication
Application
Priority
JP 2009050906 W 20090115
Abstract (en)
By heating a steel material comprising C: 0.003 to 0.05%, Si: 0.60% or less, Mn: 0.6 to 2.0%, P: 0.020% or less, S: 0.010% or less, Cr: 0.20 to 1.5%, Nb: 0.005 to 0.05%, Al: 0.060% or less, and N: 0.001 to 0.006%, further limiting, as an impurity, Mo to 0.03% or less, having a balance of iron and unavoidable impurities, and having a weld cracking parameter P CM value defined by P CM =C+Si/30+Mn/20+Cu/20+Ni/60+Cr/20+Mo/ 15+V/10+5B of 0.22% or less, to 1000 to 1300°C in temperature, finishing the hot rolling at 800°C or more in temperature, then cooling, steel for welded structures excellent in high temperature strength and low temperature toughness can be inexpensively provided.
IPC 8 full level
C21D 8/00 (2006.01); C21D 8/02 (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 38/38 (2006.01); C22C 38/42 (2006.01); C22C 38/44 (2006.01); C22C 38/46 (2006.01); C22C 38/48 (2006.01); C22C 38/58 (2006.01)
CPC (source: EP KR US)
C21D 8/02 (2013.01 - KR); C21D 8/0226 (2013.01 - EP US); C21D 8/0263 (2013.01 - EP US); C22C 38/001 (2013.01 - EP US); C22C 38/004 (2013.01 - EP US); 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 US); C22C 38/24 (2013.01 - EP US); C22C 38/26 (2013.01 - EP KR US); C22C 38/28 (2013.01 - EP US); C22C 38/38 (2013.01 - EP US); C22C 38/42 (2013.01 - EP US); C22C 38/44 (2013.01 - EP US); C22C 38/46 (2013.01 - EP US); C22C 38/48 (2013.01 - EP KR US); C22C 38/58 (2013.01 - EP US); C21D 2211/004 (2013.01 - EP US); C21D 2211/005 (2013.01 - EP US)
Designated contracting state (EPC)
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 SE SI SK TR
DOCDB simple family (publication)
EP 2380997 A1 20111026; EP 2380997 A4 20161228; EP 2380997 B1 20200108; BR PI0901011 A2 20151124; BR PI0901011 B1 20190910; CN 101849026 A 20100929; CN 101849026 B 20120704; JP 4834149 B2 20111214; JP WO2010082361 A1 20120628; KR 101189263 B1 20121009; KR 20100105821 A 20100930; US 2011262298 A1 20111027; WO 2010082361 A1 20100722
DOCDB simple family (application)
EP 09707108 A 20090115; BR PI0901011 A 20090115; CN 200980000058 A 20090115; JP 2009050906 W 20090115; JP 2009509204 A 20090115; KR 20097012504 A 20090115; US 44951209 A 20090115