EP 3348661 A1 20180718 - STEEL SHEET AND ENAMELED PRODUCT
Title (en)
STEEL SHEET AND ENAMELED PRODUCT
Title (de)
STAHLBLECH UND EMAILLIERTES PRODUKT
Title (fr)
TÔLE D'ACIER ET PRODUIT ÉMAILLÉ
Publication
Application
Priority
- JP 2015179722 A 20150911
- JP 2016076847 W 20160912
Abstract (en)
A steel sheet includes, by mass%: C: 0.0060% or less; Si: 0.0010% to 0.050%; Mn: 0.05% to 0.50%; P: 0.005% to 0.100%; S: 0.0500% or less; Al: 0.0010% to 0.010%; Cu: 0.010% to 0.045%; O: 0.0250% to 0.0700%; N: 0.0010% to 0.0045%; and a remainder: Fe and impurities, in which a structure of the steel sheet contains a ferrite, an average grain diameter of the ferrite at a thickness 1/4 position in a through-thickness direction from a surface is 20.0 µm or less, oxides containing Fe and Mn are contained, among the oxides, a number density of oxides having a diameter of more than 1.0 µm and 10 µm or less is 1.0×10 3 grains/mm 2 or more and 5.0×10 4 grains/mm 2 or less, and a number density of oxides having a diameter of 0.1 to 1.0 µm is 5.0×10 3 grains/mm 2 or more.
IPC 8 full level
C21D 9/48 (2006.01); C22C 38/00 (2006.01); C22C 38/60 (2006.01)
CPC (source: EP KR)
C21D 8/0236 (2013.01 - EP KR); C21D 9/48 (2013.01 - EP); C22C 38/00 (2013.01 - EP); C22C 38/001 (2013.01 - EP KR); C22C 38/004 (2013.01 - EP); C22C 38/02 (2013.01 - EP KR); C22C 38/04 (2013.01 - EP KR); C22C 38/06 (2013.01 - EP KR); C22C 38/16 (2013.01 - EP KR); C22C 38/60 (2013.01 - EP); C21D 2211/004 (2013.01 - EP); C21D 2211/005 (2013.01 - EP KR)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3348661 A1 20180718; EP 3348661 A4 20190213; AU 2016321009 A1 20180315; AU 2016321009 B2 20190822; AU 2016321009 C1 20191121; CN 107949652 A 20180420; CN 107949652 B 20200407; JP 6115691 B1 20170419; JP WO2017043660 A1 20170907; KR 102068499 B1 20200122; KR 20180038019 A 20180413; MX 2018002854 A 20180615; NZ 740281 A 20190125; WO 2017043660 A1 20170316
DOCDB simple family (application)
EP 16844521 A 20160912; AU 2016321009 A 20160912; CN 201680051843 A 20160912; JP 2016076847 W 20160912; JP 2016569861 A 20160912; KR 20187006500 A 20160912; MX 2018002854 A 20160912; NZ 74028116 A 20160912