EP 2097547 A1 20090909 - HIGH STRENGTH ZN-COATED STEEL SHEET HAVING EXCELLENT MECHANICAL PROPERITES AND SURFACE QUALITY AND THE METHOD FOR MANUFACTURING THE SAME
Title (en)
HIGH STRENGTH ZN-COATED STEEL SHEET HAVING EXCELLENT MECHANICAL PROPERITES AND SURFACE QUALITY AND THE METHOD FOR MANUFACTURING THE SAME
Title (de)
HOCHFESTES ZN-BESCHICHTETES STAHLBLECH MIT HERVORRAGENDEN MECHANISCHEN EIGENSCHAFTEN UND HERVORRAGENDER OBERFLÄCHENQUALITÄT SOWIE HERSTELLUNGSVERFAHREN DAFÜR
Title (fr)
FEUILLE D'ACIER À REVÊTEMENT ZN POSSÉDANT D'EXCELLENTES PROPRIÉTÉS MÉCANIQUES ET QUALITÉ DE SURFACE ET SON PROCÉDÉ DE FABRICATION
Publication
Application
Priority
- KR 2007006867 W 20071227
- KR 20060136999 A 20061228
Abstract (en)
[origin: WO2008082146A1] There is provided a high strength Zn-coated steel sheet having excellent mechanical properties and surface quality, which is mainly used for inner and outer panels and structural parts of a vehicle. The steel sheet having excellent mechanical properties and surface quality includes, by weight: 0.01 to 0.2% C, 0.01 to 1.5% Si, 0.2 to 4.0% Mn, 0.001 to 0.1% P, =0.03% S, 0.01 to 1.5% Al, 0.001 to 0.03% N, 0.0002 to 0.005% B, 0.01 to 2.0% Cr, 0.005 to 0.5% Mo, 0.005 to 0.1% Sb, and the balance of Fe and unavoidable impurities, the steel sheet satisfying a relation of 5=(7Mn+4Si+2Al+18B)/(4C+3P+20Sb)=18 and having an oxide layer with a thickness of 1? or less on a surface thereof. According to the present invention, a high-strength dual phase steel having excellent mechanical properties and surface quality can be manufactured.
IPC 8 full level
C22C 38/00 (2006.01)
CPC (source: EP KR)
C21D 8/0426 (2013.01 - KR); C21D 8/0436 (2013.01 - KR); C21D 8/0473 (2013.01 - EP KR); C21D 8/0478 (2013.01 - EP KR); C21D 9/48 (2013.01 - EP KR); C22C 38/001 (2013.01 - EP KR); C22C 38/02 (2013.01 - EP); C22C 38/04 (2013.01 - EP); C22C 38/06 (2013.01 - EP); C22C 38/22 (2013.01 - EP KR); C22C 38/60 (2013.01 - EP KR); C23C 28/04 (2013.01 - EP KR); C21D 8/0426 (2013.01 - EP); C21D 8/0436 (2013.01 - EP); C21D 2211/005 (2013.01 - EP KR); C21D 2211/008 (2013.01 - EP KR)
Citation (search report)
See references of WO 2008082146A1
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 MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2008082146 A1 20080710; WO 2008082146 A9 20081023; CN 101495661 A 20090729; EP 2097547 A1 20090909; JP 2010502845 A 20100128; JP 5354600 B2 20131127; KR 20080061853 A 20080703
DOCDB simple family (application)
KR 2007006867 W 20071227; CN 200780020207 A 20071227; EP 07851792 A 20071227; JP 2009528186 A 20071227; KR 20060136999 A 20061228