EP 1806420 A4 20080423 - STEEL SHEET FOR EXTREMELY THIN CONTAINER AND METHOD FOR PRODUCTION THEREOF
Title (en)
STEEL SHEET FOR EXTREMELY THIN CONTAINER AND METHOD FOR PRODUCTION THEREOF
Title (de)
STAHLBLECH FÜR EXTREM DÜNNEN BEHÄLTER UND ZUGEHÖRIGES HERSTELLUNGSVERFAHREN
Title (fr)
FEUILLE D'ACIER POUR RECIPIENT EXTREMEMENT MINCE ET PROCEDE DE PRODUCTION CORRESPONDANT
Publication
Application
Priority
JP 2004013493 W 20040909
Abstract (en)
[origin: EP1806420A1] This steel sheet for an ultrathin container contains, in terms of mass %, C of 0.0800% or less, N of 0.600% or less, Si of 2.0% or less, Mn of 2.0% or less, P of 0.10% or less, S of 0.05% or less, and Al of 2.0% or less. The steel sheet has a. region in which nitrides of 1 µm or less and 0.02 µm or more in diameter exist in a surface layer within 1/8 thickness of the steel sheet at the number density of 0.2 piece/µm 3 or more, and satisfies the formula (A) (the number density at the 1/8 sheet thickness position of the steel sheet) > (the number density at the 1/4 sheet thickness position of the steel sheet) ... (A). Alternatively, in the steel sheet, nitrides of 1 µm or less and 0.02 µm or more in diameter satisfy the formula (B) (the number density at the 1/20 sheet thickness position of the steel sheet) / (the number density at the 1/4 sheet thickness position of the steel sheet) > 1.5 ... (B).
IPC 8 full level
C22C 38/00 (2006.01); C21D 9/46 (2006.01); C22C 38/06 (2006.01); C22C 38/60 (2006.01); C23C 8/26 (2006.01)
CPC (source: EP)
C21D 8/1216 (2013.01); C21D 9/46 (2013.01); C22C 38/004 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/12 (2013.01); C22C 38/60 (2013.01); C23C 8/26 (2013.01)
Citation (search report)
- [X] JP 2004218061 A 20040805 - NIPPON STEEL CORP
- [E] WO 2005056841 A1 20050623 - NIPPON STEEL CORP [JP], et al
- [E] WO 2005068667 A1 20050728 - NIPPON STEEL CORP [JP], et al
- [A] JP H073429 A 19950106 - NIPPON STEEL CORP
- [A] JP H11310829 A 19991109 - NIPPON STEEL CORP
- [A] JP 2001107189 A 20010417 - NIPPON STEEL CORP
- See references of WO 2006027854A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1806420 A1 20070711; EP 1806420 A4 20080423; CN 101014727 A 20070808; WO 2006027854 A1 20060316
DOCDB simple family (application)
EP 04773152 A 20040909; CN 200480043939 A 20040909; JP 2004013493 W 20040909