EP 2520683 B1 20161130 - HIGH STRENGTH STEEL SHEET HAVING EXCELLENT BRITTLE CRACK RESISTANCE AND METHOD FOR MANUFACTURING SAME
Title (en)
HIGH STRENGTH STEEL SHEET HAVING EXCELLENT BRITTLE CRACK RESISTANCE AND METHOD FOR MANUFACTURING SAME
Title (de)
HOCHFESTES STAHLBLECH MIT HERVORRAGENDEM SPRÖDIGKEITSBRUCHWIDERSTAND UND HERSTELLUNGSVERFAHREN DAFÜR
Title (fr)
TÔLE D'ACIER À HAUTE RÉSISTANCE PRÉSENTANT UNE EXCELLENTE RÉSISTANCE AUX FISSURES FRAGILES ET PROCÉDÉ DE FABRICATION DE CELLE-CI
Publication
Application
Priority
- KR 20090131740 A 20091228
- KR 2010009222 W 20101222
Abstract (en)
[origin: EP2520683A2] Provided is a steel plate having excellent resistance to brittle crack initiation in a parent material zone and a weld heat affected zone. More particularly, the present invention relates to a high-strength steel sheet having excellent resistance to brittle crack initiation which includes 0.02 wt% to 0.06 wt% of carbon (C), 0.1 wt% or less of silicon (Si), 1.5 wt% to 2.0 wt% of manganese (Mn), 0.012 wt% or less of phosphorous (P), 0.003 wt% or less of sulfur (S), 0.5 wt% to 1.5 wt% of nickel (Ni), 0.003 wt% to 0.015 wt% of aluminum (Al), 0.005 wt% to 0.02 wt% of titanium (Ti), 0.005 wt% to 0.015 wt% of niobium (Nb), 0.002 wt% to 0.006 wt% of nitrogen (N), and iron (Fe) as well as unavoidable impurities as a remainder, and has a value of C+0.5Si-0.1Ni+6Al+3Nb of 0.1% or less, and a method of manufacturing the high-strength steel sheet.
IPC 8 full level
C22C 38/04 (2006.01); B21B 3/02 (2006.01); C21D 8/02 (2006.01)
CPC (source: EP KR)
B21B 3/02 (2013.01 - KR); C21D 8/02 (2013.01 - KR); C21D 8/0221 (2013.01 - EP); C21D 8/0226 (2013.01 - EP); C22C 38/001 (2013.01 - EP); C22C 38/04 (2013.01 - EP KR); C22C 38/06 (2013.01 - EP); C22C 38/08 (2013.01 - EP); C22C 38/12 (2013.01 - EP); C22C 38/14 (2013.01 - EP); C21D 9/50 (2013.01 - EP); C21D 2201/05 (2013.01 - EP); C21D 2211/002 (2013.01 - EP); C21D 2211/005 (2013.01 - EP)
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 2520683 A2 20121107; EP 2520683 A4 20150311; EP 2520683 B1 20161130; CN 102753719 A 20121024; CN 102753719 B 20150819; KR 101360737 B1 20140207; KR 20110075321 A 20110706; WO 2011081349 A2 20110707; WO 2011081349 A3 20111110
DOCDB simple family (application)
EP 10841181 A 20101222; CN 201080063862 A 20101222; KR 20090131740 A 20091228; KR 2010009222 W 20101222