EP 1735474 A4 20100929 - COLD ROLLED STEEL SHEET AND HOT DIPPED STEEL SHEET WITH SUPERIOR STRENGTH AND BAKE HARDENABILITY AND METHOD FOR MANUFACTURING THE STEEL SHEETS
Title (en)
COLD ROLLED STEEL SHEET AND HOT DIPPED STEEL SHEET WITH SUPERIOR STRENGTH AND BAKE HARDENABILITY AND METHOD FOR MANUFACTURING THE STEEL SHEETS
Title (de)
KALTGEWALZTES STAHLBLECH UND FEUERVEREDELTES STAHLBLECH MIT HOHER FESTIGKEIT UND WARMHÄRTBARKEIT UND VERFAHREN ZU HERSTELLUNG DER STAHLBLECHE
Title (fr)
FEUILLE D'ACIER LAMINEE A FROID ET FEUILLE D'ACIER TRAITEE A CHAUD PRESENTANT UNE RESISTANCE ET UN DURCISSEMENT A LA CUISSON SUPERIEURS ET PROCEDE DE FABRICATION DE CES FEUILLES D'ACIER
Publication
Application
Priority
- KR 2005000828 W 20050322
- KR 20040020204 A 20040325
- KR 20040103610 A 20041209
Abstract (en)
[origin: WO2006001583A1] Disclosed herein are a bake-hardenable high-strength cold-rolled steel sheet, a hot-dipped steel sheet thereof, and a method for manufacturing the same. The steel sheet comprises 0.0016 ~ 0.01 % of C; 0.1 % or less of Si; 0.2 ~ 1.5 % of Mn; 0.05 ~ 0.15 % of P; 0.01 % or less of S; 0.08 ~ 0.5 % of (soluble) Al; 0.0025 % or less of N; 0.003 ~ 0.1 % of Nb; 0.003 % or less of Ti; 0.01 ~ 0.4 % of Mo; 0.0005 ~ 0.005 % of B; and the balance of Fe and other unavoidable impurities, in terms of weight%. The steel sheet has fine AlN precipitates, and a grain size(ASTM No.) of 9 or more. The AlN precipitates have a grain size, which can suppress grain growth. The steel sheet has enhanced strength, bake hardenability, aging resistance, and secondary work embrittlement resistance.
IPC 8 full level
C21D 9/46 (2006.01)
CPC (source: EP US)
C21D 9/46 (2013.01 - EP US); C22C 38/001 (2013.01 - EP US); C22C 38/02 (2013.01 - EP US); C22C 38/04 (2013.01 - EP US); C22C 38/06 (2013.01 - EP US); C22C 38/12 (2013.01 - EP US)
Citation (search report)
- [XAYI] EP 1028172 A1 20000816 - NIPPON STEEL CORP [JP]
- [XAYI] JP H04131357 A 19920506 - NIPPON STEEL CORP
- [XAY] JP H05171353 A 19930709 - NIPPON STEEL CORP
- [A] DATABASE WPI Week 200376, Derwent World Patents Index; AN 2003-809358, XP002597317
- See references of WO 2006001583A1
Designated contracting state (EPC)
DE FR
DOCDB simple family (publication)
WO 2006001583 A1 20060105; EP 1735474 A1 20061227; EP 1735474 A4 20100929; EP 1735474 B1 20151021; JP 2007530783 A 20071101; JP 5127444 B2 20130123; US 2007181232 A1 20070809; US 2009272468 A1 20091105
DOCDB simple family (application)
KR 2005000828 W 20050322; EP 05789750 A 20050322; JP 2007504882 A 20050322; US 49982909 A 20090709; US 59414005 A 20050322