EP 2060643 A4 20101201 - STEEL EXCELLING IN TOUGHNESS AT REGION AFFECTED BY WELDING HEAT
Title (en)
STEEL EXCELLING IN TOUGHNESS AT REGION AFFECTED BY WELDING HEAT
Title (de)
STAHL MIT HERVORRAGENDER HÄRTE DES DURCH SCHWEISSUNGSHITZE BETROFFENEN BEREICHS
Title (fr)
ACIER EXCELLANT PAR SA DURETÉ DANS LES ZONES AFFECTÉES PAR LA CHALEUR DE LA SOUDURE
Publication
Application
Priority
JP 2006325984 W 20061220
Abstract (en)
[origin: EP2060643A1] The present invention is a steel excellent in toughness of a weld heat affected zone characterized by containing, by mass%, C: 0.02 to 0,06%, Si: 0.05 to 0.30%, Mn: 1.7 to 2.7%, P: 0.015% or less, S: 0.010% or less, Ti: 0.005 to 0.015%, O: 0.0010 to 0.0045, and N: 0.0020 to 0.0060% and comprising a balance of iron and unavoidable impurities, having an amount of intermixture of impurities limited to Al: 0.004% or less, Nb: 0.003% or less, and V: 0.030% or less, and having a CeH represented by formula (A) in the range of 0.04 or less: CeH = C + 1 / 4 ¢ Si - 1 / 24 ¢ Mn + 1 / 48 ¢ Cu + 1 / 32 ¢ Ni + 1 / 0.4 ¢ Nb + 1 / 2 ¢ V where, C, Si, Mn, Cu, Ni, Nb, and V show steel compositions (mass%).
IPC 8 full level
C22C 38/00 (2006.01); C21D 8/02 (2006.01); C22C 38/14 (2006.01); C22C 38/16 (2006.01)
CPC (source: EP KR)
C21D 8/02 (2013.01 - EP KR); C21D 9/50 (2013.01 - EP KR); C22C 38/001 (2013.01 - EP KR); C22C 38/02 (2013.01 - EP KR); C22C 38/04 (2013.01 - EP KR); C22C 38/14 (2013.01 - EP KR)
Citation (search report)
- [A] JP 2001355039 A 20011225 - NIPPON STEEL CORP
- [A] EP 0867520 A2 19980930 - SUMITOMO METAL IND [JP]
- [A] JP H093597 A 19970107 - NIPPON STEEL CORP
- [A] JP S624826 A 19870110 - KOBE STEEL LTD
- [A] REIP C P ET AL: "High strength microalloyed CMn(V-Nb-Ti) and CMn(V-Nb) pipeline steels processed through CSP thin-slab technology: Microstructure, precipitation and mechanical properties", MATERIALS SCIENCE AND ENGINEERING A: STRUCTURAL MATERIALS:PROPERTIES, MICROSTRUCTURE & PROCESSING, LAUSANNE, CH LNKD- DOI:10.1016/J.MSEA.2006.03.026, vol. 424, no. 1-2, 25 May 2006 (2006-05-25), pages 307 - 317, XP025098833, ISSN: 0921-5093, [retrieved on 20060525]
- [A] PAN Y-T ET AL: "Development of TiOx-bearing steels with superior heat-affected zone toughness", MATERIALS AND DESIGN, LONDON, GB LNKD- DOI:10.1016/0261-3069(94)90027-2, vol. 15, no. 6, 1 January 1994 (1994-01-01), pages 331 - 338, XP024152939, ISSN: 0261-3069, [retrieved on 19940101]
- See references of WO 2008075443A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
EP 2060643 A1 20090520; EP 2060643 A4 20101201; EP 2060643 B1 20120418; BR PI0607524 A2 20100323; BR PI0607524 B1 20160119; CA 2602076 A1 20080620; CA 2602076 C 20120710; CN 100594250 C 20100317; CN 101292055 A 20081022; KR 100940617 B1 20100205; KR 20080067957 A 20080722; WO 2008075443 A1 20080626
DOCDB simple family (application)
EP 06843367 A 20061220; BR PI0607524 A 20061220; CA 2602076 A 20061220; CN 200680006614 A 20061220; JP 2006325984 W 20061220; KR 20077019771 A 20061220