EP 4190934 A1 20230607 - COMPONENT OF B-ZR-ALLOY STEEL
Title (en)
COMPONENT OF B-ZR-ALLOY STEEL
Title (de)
BAUTEIL AUS B-ZR-LEGIERTEM STAHL
Title (fr)
COMPOSANT EN ACIER ALLIÉ B-ZR
Publication
Application
Priority
EP 21211997 A 20211202
Abstract (en)
[origin: WO2023099654A1] The invention relates to a component comprising a part made of steel, the steel comprising, inter alia, 0.30 – 0.50 wt.% C, 0.05 – 1.3 wt.% Mn, 0.001 – 0.015 wt.% P, 0.001 – 0.015 wt.% S, 0.01 – 0.8 wt.% Si, 0.3 – 1.5 wt.% Cr, 0.005 – 0.40 wt.% V, 0.0008 – 0.0050 wt.% B, 0.02 – 0.35 wt.% Al, 0.0001 – 0.0200 wt.% N, 0.01 – 0.08 wt.% Ti, and 0.0030 – 0.0800 wt.% Zr, the remainder being iron and unavoidable impurities, wherein the B content in the steel at a depth of 5 - 60 µm is ≥ 80% of the B content in the steel at a depth of 500 µm.
Abstract (de)
Bauteil mit einem Bestandteil aus Stahl, wobei der Stahl0,30 - 0,50 Gew.-% C,0,05 - 1,3 Gew.-% Mn,0,001 - 0,015 Gew.-% P,0,001 - 0,015 Gew.-% S,0,01 - 0,8 Gew.-% Si,0,3 - 1,5 Gew.-% Cr,0,005 - 0,40 Gew.-% V,0,0008 - 0,0050 Gew.-% B,0,02 - 0,35 Gew.-% AI,0,0001 - 0,0200 Gew.-% N,0,01 - 0,08 Gew.-% Ti,0,0030 - 0,0800 Gew.-% Zr,optional0 - 0,20 Gew.-% Mo,0 - 0,50 Gew.-% Ni,0 - 0,50 Gew.-% Cu,0,0010 - 0,0100 Gew.-% Ca,den Rest Eisen und unvermeidbare Verunreinigungen umfasst.
IPC 8 full level
C22C 38/00 (2006.01); C21D 9/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/24 (2006.01); C22C 38/28 (2006.01); C22C 38/32 (2006.01)
CPC (source: EP)
C21D 9/0093 (2013.01); C22C 38/001 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/24 (2013.01); C22C 38/28 (2013.01); C22C 38/32 (2013.01); C21D 2211/002 (2013.01); C21D 2211/005 (2013.01); C21D 2211/008 (2013.01); C21D 2211/009 (2013.01)
Citation (applicant)
- WO 2021009705 A1 20210121 - ARCELORMITTAL [LU]
- WO 2008142275 A2 20081127 - ARCERLORMITTAL GANDRANGE [FR], et al
Citation (search report)
- [I] EP 3078758 A1 20161012 - KOBE STEEL LTD [JP]
- [A] EP 2546380 A1 20130116 - NIPPON STEEL CORP [JP]
- [A] EP 2484789 A1 20120808 - KOBE STEEL LTD [JP]
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 4190934 A1 20230607; CA 3238223 A1 20230608; CN 118339322 A 20240712; EP 4247993 A1 20230927; KR 20240089753 A 20240620; WO 2023099654 A1 20230608
DOCDB simple family (application)
EP 21211997 A 20211202; CA 3238223 A 20221201; CN 202280079461 A 20221201; EP 2022084020 W 20221201; EP 22826100 A 20221201; KR 20247015995 A 20221201