EP 4368736 A1 20240515 - HOT-ROLLED STEEL SHEET
Title (en)
HOT-ROLLED STEEL SHEET
Title (de)
WARMGEWALZTES STAHLBLECH
Title (fr)
TÔLE D'ACIER LAMINÉE À CHAUD
Publication
Application
Priority
- JP 2021113549 A 20210708
- JP 2022008914 W 20220302
Abstract (en)
This hot-rolled steel sheet has a predetermined chemical composition and a microstructure containing, in area%, less than 3.00% of retained austenite with an Ref value indicating a ratio between average fracture surface units before and after plastic deformation being 2.00 or more and a tensile strength of 980 MPa or more.
IPC 8 full level
C22C 38/00 (2006.01); C21D 9/46 (2006.01); C22C 38/58 (2006.01)
CPC (source: EP KR US)
C21D 1/02 (2013.01 - EP); C21D 1/18 (2013.01 - US); C21D 1/84 (2013.01 - US); C21D 6/001 (2013.01 - US); C21D 6/002 (2013.01 - US); C21D 6/005 (2013.01 - US); C21D 6/007 (2013.01 - US); C21D 6/008 (2013.01 - US); C21D 8/0205 (2013.01 - EP US); C21D 8/0226 (2013.01 - EP KR US); C21D 8/0263 (2013.01 - EP US); C21D 9/46 (2013.01 - KR US); C22C 38/001 (2013.01 - KR US); C22C 38/002 (2013.01 - EP US); C22C 38/005 (2013.01 - EP US); C22C 38/008 (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 38/08 (2013.01 - EP US); C22C 38/10 (2013.01 - EP US); C22C 38/12 (2013.01 - EP US); C22C 38/14 (2013.01 - EP US); C22C 38/16 (2013.01 - EP US); C22C 38/18 (2013.01 - EP); C22C 38/32 (2013.01 - EP); C22C 38/34 (2013.01 - EP); C22C 38/38 (2013.01 - EP US); C22C 38/42 (2013.01 - KR); C22C 38/44 (2013.01 - KR); C22C 38/46 (2013.01 - KR); C22C 38/48 (2013.01 - KR); C22C 38/50 (2013.01 - KR); C22C 38/54 (2013.01 - KR); C22C 38/58 (2013.01 - KR); C21D 9/46 (2013.01 - EP); C21D 2211/001 (2013.01 - KR); C21D 2211/002 (2013.01 - EP KR US); C21D 2211/005 (2013.01 - EP KR US); C21D 2211/008 (2013.01 - EP KR US)
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 4368736 A1 20240515; CN 117280065 A 20231222; JP WO2023281808 A1 20230112; KR 20230167417 A 20231208; MX 2023013159 A 20231130; US 2024209470 A1 20240627; WO 2023281808 A1 20230112
DOCDB simple family (application)
EP 22837230 A 20220302; CN 202280034063 A 20220302; JP 2022008914 W 20220302; JP 2023533068 A 20220302; KR 20237038427 A 20220302; MX 2023013159 A 20220302; US 202218288399 A 20220302