EP 2050834 A4 20100929 - DR STEEL SHEET AND PROCESS FOR MANUFACTURING THE SAME
Title (en)
DR STEEL SHEET AND PROCESS FOR MANUFACTURING THE SAME
Title (de)
DR-STAHLBLECH UND HERSTELLUNGSVERFAHREN DAFÜR
Title (fr)
TÔLE D'ACIER POUR EMBOUTISSAGE ET PROCÉDÉ DE FABRICATION DE CELLE-CI
Publication
Application
Priority
- JP 2007065590 W 20070809
- JP 2006219066 A 20060811
Abstract (en)
[origin: EP2050834A1] This DR steel sheet includes the following steel components: C: 0.02 to 0.06 mass%, Si: equal to or less than 0.03 mass%, Mn: 0.05 to 0.5 mass%, P: equal to or less than 0.02 mass%, S: equal to or less than 0.02 mass%, Al: 0.02 to 0.10 mass%, and N: 0.008 to 0.015 mass%. The amount of solute N (Ntotal-NasAIN) in the steel sheet containing a residual iron and inevitable impurities, is equal to or more than 0.006%; and the total stretchability in a rolling direction after aging is equal to or more than 10%, total stretchability in a sheet width direction after aging is equal to or more than 5%, and an average Lankford value after aging is equal to or less than 1.0.
IPC 8 full level
C22C 38/00 (2006.01); B21B 1/22 (2006.01); B21B 1/28 (2006.01); B21B 3/00 (2006.01); C21D 9/46 (2006.01); C22C 38/06 (2006.01)
CPC (source: EP KR US)
C21D 8/0226 (2013.01 - KR); C21D 8/0236 (2013.01 - KR); C21D 9/46 (2013.01 - EP KR US); C22C 38/001 (2013.01 - EP KR US); C22C 38/04 (2013.01 - EP KR US); C22C 38/06 (2013.01 - EP KR US)
Citation (search report)
- [X] WO 2006027854 A1 20060316 - NIPPON STEEL CORP [JP], et al
- [A] JP H07310142 A 19951128 - NIPPON KOKAN KK
- See references of WO 2008018531A1
Designated contracting state (EPC)
BE DE FR GB NL
DOCDB simple family (publication)
EP 2050834 A1 20090422; EP 2050834 A4 20100929; CN 101454470 A 20090610; JP 5047970 B2 20121010; JP WO2008018531 A1 20100107; KR 20090007796 A 20090120; TW 200827460 A 20080701; US 2009250147 A1 20091008; WO 2008018531 A1 20080214
DOCDB simple family (application)
EP 07792242 A 20070809; CN 200780019822 A 20070809; JP 2007065590 W 20070809; JP 2008528868 A 20070809; KR 20087030194 A 20081211; TW 96128989 A 20070807; US 22750507 A 20070809