EP 4314374 A1 20240207 - HOT-DIP GALVANISED STEEL SHEET
Title (en)
HOT-DIP GALVANISED STEEL SHEET
Title (de)
SCHMELZTAUCHBESCHICHTETES STAHLBLECH
Title (fr)
TÔLE D'ACIER GALVANISÉE PAR IMMERSION À CHAUD
Publication
Application
Priority
- DE 102021107873 A 20210329
- EP 2022057164 W 20220318
Abstract (en)
[origin: WO2022207365A1] The invention relates to a hot-dip galvanised steel sheet having a Zn-Mg-Al coating comprising between 0.1 and 8.0 wt.% aluminium, between 0.1 and 8.0 wt.% magnesium, and the remainder zinc and unavoidable impurities, the coating containing zinc grains and further phases of magnesium and/or aluminium as well as eutectic structures comprising at least intermetallic zinc-magnesium phases, a native oxide layer being formed on the coating. According to the invention, the coating underneath the native oxide layer has an area ratio of at least 35% in which there is an average nanohardness of at least 4 GPa.
IPC 8 full level
C23C 2/06 (2006.01); C23C 2/20 (2006.01); C23C 2/26 (2006.01); C23C 2/28 (2006.01); C23C 2/40 (2006.01); C23C 28/00 (2006.01); C23C 30/00 (2006.01)
CPC (source: EP US)
C23C 2/06 (2013.01 - EP US); C23C 2/14 (2013.01 - US); C23C 2/20 (2013.01 - EP); C23C 2/26 (2013.01 - EP); C23C 2/28 (2013.01 - EP); C23C 2/40 (2013.01 - EP US); C23C 22/12 (2013.01 - EP); C23C 28/3225 (2013.01 - EP); C23C 28/345 (2013.01 - EP); C23C 30/00 (2013.01 - EP)
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)
DE 102021107873 A1 20220929; CN 117136251 A 20231128; EP 4314374 A1 20240207; US 2024133012 A1 20240425; US 2024229210 A9 20240711; WO 2022207365 A1 20221006
DOCDB simple family (application)
DE 102021107873 A 20210329; CN 202280025667 A 20220318; EP 2022057164 W 20220318; EP 22717072 A 20220318; US 202218279686 A 20220318