EP 4176092 A1 20230510 - HEAT TREATED COLD ROLLED STEEL SHEET AND A METHOD OF MANUFACTURING THEREOF
Title (en)
HEAT TREATED COLD ROLLED STEEL SHEET AND A METHOD OF MANUFACTURING THEREOF
Title (de)
WÄRMEBEHANDELTES KALTGEWALZTES STAHLBLECH UND VERFAHREN ZUR HERSTELLUNG DAVON
Title (fr)
TÔLE D'ACIER LAMINÉE À FROID ET TRAITÉE THERMIQUEMENT ET PROCÉDÉ DE FABRICATION DE CELLE-CI
Publication
Application
Priority
- IB 2020056330 W 20200706
- IB 2021055898 W 20210701
Abstract (en)
[origin: WO2022008949A1] A cold rolled steel sheet having a composition comprising of 0.05 % ≤ Carbon ≤ 0.15 %, 1.8% ≤ Manganese ≤ 2.7%, 0.1% ≤ Silicon ≤ 1%,0.01% ≤ Aluminum ≤ 0.8%,0.1% ≤ Chromium ≤ 0.9%,0% ≤ Phosphorus ≤ 0.09%,0.0001% ≤ Titanium ≤ 0.1%,0.0005% ≤ Boron ≤ 0.003%, 0.01% ≤ Niobium ≤ 0.1%, 0 % ≤ Sulfur ≤ 0.09 %, 0 % ≤ Nitrogen ≤ 0.09%, 0% ≤ Vanadium ≤ 0.2%, 0%≤Molybdenum≤0.2%, 0%≤Nickel≤2%, 0% ≤ Copper ≤ 2%, 0% ≤ Calcium ≤ 0.005%, 0% ≤ Cerium ≤ 0.1%, 0% ≤ Magnesium ≦ 0.05%, 0% ≤ Zirconium ≦ 0.05%, the remainder being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet comprising in area fraction, 40% to 60% martensite, 5 to 40% of inter-critical ferrite, a cumulated amount of 10 to 35% of transformed ferrite and bainite and 0% to 5% of residual austenite.
IPC 8 full level
C21D 8/02 (2006.01); C21D 1/20 (2006.01); C21D 6/02 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/06 (2006.01); C22C 38/22 (2006.01); C22C 38/26 (2006.01); C22C 38/28 (2006.01); C22C 38/32 (2006.01); C22C 38/38 (2006.01); C23C 2/02 (2006.01); C23C 2/06 (2006.01)
CPC (source: EP KR US)
B21B 1/22 (2013.01 - US); B21B 3/02 (2013.01 - US); C21D 1/20 (2013.01 - EP); C21D 6/002 (2013.01 - US); C21D 6/005 (2013.01 - US); C21D 6/008 (2013.01 - US); C21D 8/0205 (2013.01 - US); C21D 8/0226 (2013.01 - EP KR US); C21D 8/0236 (2013.01 - EP KR US); C21D 8/0247 (2013.01 - EP KR); C21D 8/0263 (2013.01 - EP KR US); C21D 9/46 (2013.01 - KR US); C22C 38/001 (2013.01 - EP KR US); C22C 38/002 (2013.01 - EP US); C22C 38/02 (2013.01 - EP US); C22C 38/06 (2013.01 - EP KR US); C22C 38/22 (2013.01 - EP); C22C 38/26 (2013.01 - EP KR); C22C 38/28 (2013.01 - EP KR); C22C 38/32 (2013.01 - EP KR); C22C 38/38 (2013.01 - EP KR); C22C 38/44 (2013.01 - US); C22C 38/48 (2013.01 - US); C22C 38/50 (2013.01 - US); C22C 38/58 (2013.01 - KR US); C23C 2/02 (2013.01 - EP KR US); C23C 2/0224 (2022.08 - EP KR US); C23C 2/024 (2022.08 - EP KR US); C23C 2/06 (2013.01 - EP KR); B21B 2001/221 (2013.01 - US); C21D 2211/001 (2013.01 - US); C21D 2211/002 (2013.01 - EP KR US); C21D 2211/005 (2013.01 - EP KR US); C21D 2211/008 (2013.01 - EP KR US)
Citation (search report)
See references of WO 2022009032A1
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)
WO 2022008949 A1 20220113; BR 112022024442 A2 20230117; CA 3182944 A1 20220113; CN 115698346 A 20230203; EP 4176092 A1 20230510; JP 2023532756 A 20230731; KR 20230016217 A 20230201; MX 2023000086 A 20230209; US 2023265537 A1 20230824; WO 2022009032 A1 20220113; ZA 202212176 B 20230628
DOCDB simple family (application)
IB 2020056330 W 20200706; BR 112022024442 A 20210701; CA 3182944 A 20210701; CN 202180039907 A 20210701; EP 21736390 A 20210701; IB 2021055898 W 20210701; JP 2023500311 A 20210701; KR 20227045458 A 20210701; MX 2023000086 A 20210701; US 202118014380 A 20210701; ZA 202212176 A 20221108