EP 1568791 A1 20050831 - High strength cold rolled steel sheet and method for manufacturing the same
Title (en)
High strength cold rolled steel sheet and method for manufacturing the same
Title (de)
Hochfestes kaltgewalztes Stahlblech und Methode für die Produktion desselben
Title (fr)
Tôle d'acier laminée à froid de haute résistance et méthode pour fabriquer la même chose
Publication
Application
Priority
JP 2004049034 A 20040225
Abstract (en)
The present invention relates to a high strength cold rolled steel sheet consisting of 0.015 % or less of C, 1.5 % or less of Si, 0.4 to 3 % of Mn, 0.15 % or less of P, 0.02 % or less of S, 0.1 to 1 % of sol.Al, 0.01 % or less of N, 0.2 % or less of Ti, by mass %, and the balance of Fe and inevitable impurities. In this steel sheet, 1 </= (ÄTiÜ/48)/(ÄCÜ/12+ÄNÜ/14) is satisfied, in which ÄMÜ represents the content of the element M. Since having the superior deep drawability and the TS of 340 to 590 MPa, the high strength cold rolled steel sheet of the present invention is preferably used for automobiles parts difficult to be press formed, such as a side outer panel and a door inner panel. <IMAGE>
IPC 1-7
IPC 8 full level
C21D 8/00 (2006.01); C21D 8/04 (2006.01); C21D 9/46 (2006.01); C21D 9/48 (2006.01); C22C 38/00 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/12 (2006.01)
CPC (source: EP KR US)
C21D 8/0426 (2013.01 - EP KR US); C21D 8/0436 (2013.01 - KR); C21D 8/0473 (2013.01 - KR); C21D 8/0478 (2013.01 - KR); C22C 38/008 (2013.01 - KR); C22C 38/02 (2013.01 - EP KR US); C22C 38/04 (2013.01 - EP KR US); C22C 38/06 (2013.01 - EP KR US); C22C 38/14 (2013.01 - KR); C22C 38/60 (2013.01 - KR); C21D 8/0436 (2013.01 - EP US); C21D 8/0473 (2013.01 - EP US); C21D 8/0478 (2013.01 - EP US)
Citation (search report)
- [XA] US 2003129444 A1 20030710 - MATSUOKA SAIJI [JP], et al
- [X] KR 20010061575 A 20010707 - PO HANG IRON & STEEL [KR]
- [X] KR 20030052355 A 20030627 - POSCO [KR]
- [X] KR 20030052208 A 20030626 - POSCO [KR]
- [XA] PATENT ABSTRACTS OF JAPAN vol. 2000, no. 10 17 November 2000 (2000-11-17)
- [XA] PATENT ABSTRACTS OF JAPAN vol. 2000, no. 10 17 November 2000 (2000-11-17)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1568791 A1 20050831; CA 2496212 A1 20050825; CA 2496212 C 20100112; CN 100439544 C 20081203; CN 1661127 A 20050831; KR 20060042036 A 20060512; KR 20070089670 A 20070831; TW 200532032 A 20051001; TW I276692 B 20070321; US 2006037677 A1 20060223
DOCDB simple family (application)
EP 05003676 A 20050221; CA 2496212 A 20050203; CN 200510051717 A 20050225; KR 20050013073 A 20050217; KR 20070082656 A 20070817; TW 94105020 A 20050221; US 5036205 A 20050203