Title (en)

STEEL SECTION HAVING A THICKNESS OF AT LEAST 100MM AND METHOD OF MANUFACTURING THE SAME

Title (de)

STAHLPROFIL MIT EINER DICKE VON MINDESTENS 100 MM UND VERFAHREN ZU SEINER HERSTELLUNG

Title (fr)

PROFILÉ EN ACIER D'UNE ÉPAISSEUR D'AU MOINS 100 MM ET SON PROCEDE DE FABRICATION

Publication

EP 3728672 A1 20201028 (EN)

Application

EP 18833715 A 20181212

Priority

• IB 2017058055 W 20171218
• IB 2018059909 W 20181212

Abstract (en)

[origin: WO2019123115A1] The invention deals with a steel section, comprising a web central portion connected on each side to a flange portion having a thickness of at least 100mm, such steel section having a composition comprising, in weight percentage: C : 0.06 - 0.16 % Mn : 1.10 - 2.00 % Si : 0.10 - 0.40 % Cu : 0.001 - 0. 50 % Ni : 0.001 - 0.30 % Cr : 0.001 - 0. 50 % Mo : 0.001 - 0.20 % V : 0.06 - 0.12 % N : 0.0050% - 0.0200 % Al ≤ 0.040 % P ≤ 0.040 % S ≤ 0.030 % and comprising optionally one or more of the following elements, in weight percentage: Ti < 0.005 % Nb ≤ 0.05 % the reminder being iron and impurities resulting from elaboration, and said steel section microstructure including at least one kind of vanadium precipitates possibly comprising also one or more metal chosen among chromium, manganese and iron, said precipitates being chosen among nitrides, carbides, carbo-nitrides or any combination of them, more than 70% of such precipitates having a mean diameter below 6 nm. It also deals with a manufacturing method thereof.

IPC 8 full level

C22C 38/00 (2006.01); B21B 1/088 (2006.01); C21D 1/02 (2006.01); C21D 1/18 (2006.01); C21D 6/02 (2006.01); C21D 7/13 (2006.01); C21D 8/02 (2006.01); C21D 9/00 (2006.01); C21D 9/46 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/42 (2006.01); C22C 38/44 (2006.01); C22C 38/46 (2006.01); C22C 38/48 (2006.01); C22C 38/50 (2006.01); C22C 38/58 (2006.01); E04C 3/04 (2006.01)

CPC (source: EP KR RU US)

B21B 1/088 (2013.01 - RU); C21D 1/02 (2013.01 - EP KR); C21D 6/004 (2013.01 - US); C21D 6/005 (2013.01 - US); C21D 6/008 (2013.01 - US); C21D 7/13 (2013.01 - EP KR); C21D 8/005 (2013.01 - US); C21D 8/02 (2013.01 - RU); C21D 9/0068 (2013.01 - EP KR US); C22C 38/001 (2013.01 - EP KR US); C22C 38/002 (2013.01 - US); C22C 38/02 (2013.01 - EP US); C22C 38/04 (2013.01 - EP US); C22C 38/06 (2013.01 - EP US); C22C 38/12 (2013.01 - RU); C22C 38/24 (2013.01 - RU); C22C 38/38 (2013.01 - RU); C22C 38/42 (2013.01 - EP KR US); C22C 38/44 (2013.01 - EP US); C22C 38/46 (2013.01 - EP KR RU US); C22C 38/48 (2013.01 - EP KR US); C22C 38/50 (2013.01 - EP KR US); C22C 38/58 (2013.01 - EP KR RU); E04C 3/04 (2013.01 - US); C21D 2211/002 (2013.01 - EP KR US); C21D 2211/004 (2013.01 - EP KR US); C21D 2211/005 (2013.01 - EP KR US); C21D 2211/008 (2013.01 - EP KR US); C21D 2211/009 (2013.01 - EP KR US); C21D 2221/10 (2013.01 - EP KR); E04C 2003/0452 (2013.01 - EP)

Citation (search report)

See references of WO 2019123115A1

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 2019123115 A1 20190627; BR 112020007981 A2 20201020; BR 112020007981 B1 20231128; CA 3083365 A1 20190627; CA 3083365 C 20220726; CN 111356780 A 20200630; EP 3728672 A1 20201028; JP 2021507091 A 20210222; JP 2022177108 A 20221130; KR 102513656 B1 20230324; KR 20200081486 A 20200707; MA 51301 A 20210324; MX 2020006334 A 20200903; RU 2750752 C1 20210702; UA 124482 C2 20210922; US 2020340073 A1 20201029; WO 2019122949 A1 20190627; ZA 202002399 B 20210428

DOCDB simple family (application)

IB 2018059909 W 20181212; BR 112020007981 A 20181212; CA 3083365 A 20181212; CN 201880074198 A 20181212; EP 18833715 A 20181212; IB 2017058055 W 20171218; JP 2020530998 A 20181212; JP 2022143479 A 20220909; KR 20207016849 A 20181212; MA 51301 A 20181212; MX 2020006334 A 20181212; RU 2020122946 A 20181212; UA A202004252 A 20181212; US 201816762078 A 20181212; ZA 202002399 A 20200504