EP 3976840 A1 20220406 - COLD ROLLED AND COATED STEEL SHEET AND A METHOD OF MANUFACTURING THEREOF
Title (en)
COLD ROLLED AND COATED STEEL SHEET AND A METHOD OF MANUFACTURING THEREOF
Title (de)
KALTGEWALZTES UND BESCHICHTETES STAHLBLECH UND VERFAHREN ZU SEINER HERSTELLUNG
Title (fr)
TÔLE D'ACIER LAMINÉE À FROID ET REVÊTUE ET SON PROCÉDÉ DE FABRICATION
Publication
Application
Priority
- IB 2019054576 W 20190603
- IB 2020053154 W 20200402
Abstract (en)
[origin: WO2020245626A1] A cold rolled and coated steel sheet having a composition comprising of the following elements, 0.12%≤Carbon≤0.2%, 1.7%≤Manganese≤2.10%, 0.1% ≤Silicon≤ 0.5 %, 0.1%≤Aluminum≤ 0.8%, 0.1% ≤ Chromium ≤ 0.5 %, 0 % ≤ Phosphorus ≤ 0.09 %, 0 % ≤ Sulfur ≤ 0.09 %, 0 % ≤ Nitrogen ≤ 0.09%, Nickel ≤ 3%, Niobium ≤ 0.1%, Titanium ≤0.1%, Calcium≤0.005%, Copper≤2%, Molybdenum≤0.5%, Vanadium≤0.1%, Boron≤0.003%, Cerium≤0.1%, Magnesium ≦ 0.010%, Zirconium≦0.010% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet comprising in area fraction, 10 to 60% Bainite, 25 to 55% Ferrite, 5% to 15% Residual Austenite wherein carbon content in residual austenite is between 0.7% and 1% and 5% to 18% Martensite, wherein the cumulated amount of Bainite and Ferrite is at least 70%.
IPC 8 full level
C21D 1/32 (2006.01); C21D 6/00 (2006.01); C21D 8/02 (2006.01); C21D 9/46 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/06 (2006.01); C22C 38/20 (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); C22C 38/40 (2006.01); C23C 2/06 (2006.01); C23C 2/12 (2006.01); C23C 2/40 (2006.01)
CPC (source: EP KR US)
B21C 47/02 (2013.01 - KR); C21D 1/32 (2013.01 - EP); C21D 6/002 (2013.01 - US); C21D 6/005 (2013.01 - EP US); C21D 6/008 (2013.01 - US); C21D 8/0205 (2013.01 - EP US); C21D 8/0226 (2013.01 - EP KR US); C21D 8/0236 (2013.01 - EP KR US); C21D 8/0263 (2013.01 - EP KR); C21D 8/0273 (2013.01 - KR US); C21D 9/46 (2013.01 - EP US); C22C 38/001 (2013.01 - KR); C22C 38/002 (2013.01 - EP US); C22C 38/005 (2013.01 - EP); C22C 38/02 (2013.01 - EP US); C22C 38/06 (2013.01 - EP US); C22C 38/20 (2013.01 - EP); C22C 38/22 (2013.01 - EP); C22C 38/26 (2013.01 - EP US); C22C 38/28 (2013.01 - EP); C22C 38/32 (2013.01 - EP); C22C 38/38 (2013.01 - EP US); C22C 38/40 (2013.01 - EP); 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); C22C 38/60 (2013.01 - KR); C23C 2/06 (2013.01 - EP); C23C 2/40 (2013.01 - EP); C21D 2211/001 (2013.01 - EP US); C21D 2211/002 (2013.01 - EP KR US); C21D 2211/005 (2013.01 - EP KR US); C21D 2211/008 (2013.01 - EP 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
DOCDB simple family (publication)
WO 2020245626 A1 20201210; BR 112021021482 A2 20211221; CA 3141566 A1 20201210; CA 3141566 C 20231031; CN 113840930 A 20211224; EP 3976840 A1 20220406; JP 2022535254 A 20220805; JP 7463408 B2 20240408; KR 102712891 B1 20241004; KR 20220003081 A 20220107; MA 56012 A 20220406; MX 2021014459 A 20220106; US 2022325369 A1 20221013; WO 2020245668 A1 20201210; ZA 202108100 B 20220831
DOCDB simple family (application)
IB 2019054576 W 20190603; BR 112021021482 A 20200402; CA 3141566 A 20200402; CN 202080036788 A 20200402; EP 20716952 A 20200402; IB 2020053154 W 20200402; JP 2021571685 A 20200402; KR 20217039502 A 20200402; MA 56012 A 20200402; MX 2021014459 A 20200402; US 202017616114 A 20200402; ZA 202108100 A 20211021