EP 4130319 A4 20230315 - HOT-DIPPED GALVANIZED STEEL SHEET
Title (en)
HOT-DIPPED GALVANIZED STEEL SHEET
Title (de)
FEUERVERZINKTES STAHLBLECH
Title (fr)
TÔLE D'ACIER ALLIÉ GALVANISÉE PAR IMMERSION À CHAUD
Publication
Application
Priority
- JP 2020057273 A 20200327
- JP 2021011993 W 20210323
Abstract (en)
[origin: EP4130319A1] A hot-dip zinc-plated steel sheet includes a steel sheet, a boundary layer that is provided on a surface of the steel sheet, and a hot-dip zinc-plated layer that is provided on a surface of the boundary layer. In a surface layer region of the steel sheet, an average grain size is 4.0 µm or less and a standard deviation of grain sizes is 2.0 µm or less. In the boundary layer, a maximum Al concentration is 0.30 mass % or more.
IPC 8 full level
C22C 38/00 (2006.01); C21D 8/02 (2006.01); C21D 9/46 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/08 (2006.01); C22C 38/12 (2006.01); C22C 38/14 (2006.01); C22C 38/22 (2006.01); C22C 38/24 (2006.01); C22C 38/26 (2006.01); C22C 38/28 (2006.01); C22C 38/32 (2006.01); C22C 38/38 (2006.01); C22C 38/50 (2006.01); C22C 38/58 (2006.01); C23C 2/06 (2006.01)
CPC (source: EP KR US)
B32B 15/013 (2013.01 - US); C21D 8/0205 (2013.01 - EP); C21D 8/021 (2013.01 - EP); C21D 8/0226 (2013.01 - EP); C21D 8/0278 (2013.01 - EP); C21D 9/46 (2013.01 - EP); C22C 38/001 (2013.01 - US); C22C 38/002 (2013.01 - EP US); C22C 38/005 (2013.01 - EP US); C22C 38/02 (2013.01 - EP US); C22C 38/04 (2013.01 - EP); C22C 38/06 (2013.01 - US); C22C 38/08 (2013.01 - EP US); C22C 38/10 (2013.01 - US); C22C 38/12 (2013.01 - EP US); C22C 38/14 (2013.01 - EP); C22C 38/22 (2013.01 - EP); C22C 38/24 (2013.01 - EP); C22C 38/26 (2013.01 - EP); C22C 38/28 (2013.01 - EP US); C22C 38/32 (2013.01 - EP); C22C 38/38 (2013.01 - EP US); C22C 38/44 (2013.01 - KR); C22C 38/46 (2013.01 - KR); C22C 38/48 (2013.01 - KR); C22C 38/50 (2013.01 - EP KR); C22C 38/54 (2013.01 - KR); C22C 38/58 (2013.01 - EP KR); C23C 2/06 (2013.01 - EP KR)
Citation (search report)
- [X] US 2017314116 A1 20171102 - KAWATA HIROYUKI [JP], et al
- [X] WO 2019026116 A1 20190207 - NIPPON STEEL & SUMITOMO METAL CORP [JP] & US 2020230918 A1 20200723 - MORISHITA ATSUSHI [JP], et al
- [X] WO 2019026113 A1 20190207 - NIPPON STEEL & SUMITOMO METAL CORP [JP] & US 2020156349 A1 20200521 - MORISHITA ATSUSHI [JP], et al
- See also references of WO 2021193632A1
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
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4130319 A1 20230208; EP 4130319 A4 20230315; CN 115298345 A 20221104; CN 115298345 B 20240611; JP 7348577 B2 20230921; JP WO2021193632 A1 20210930; KR 20220139985 A 20221017; MX 2022011603 A 20221018; US 2023093068 A1 20230323; WO 2021193632 A1 20210930
DOCDB simple family (application)
EP 21776766 A 20210323; CN 202180023035 A 20210323; JP 2021011993 W 20210323; JP 2022510548 A 20210323; KR 20227031750 A 20210323; MX 2022011603 A 20210323; US 202117909231 A 20210323