EP 3655560 A1 20200527 - FLAT STEEL PRODUCT WITH A HIGH DEGREE OF AGING RESISTANCE, AND METHOD FOR PRODUCING SAME
Title (en)
FLAT STEEL PRODUCT WITH A HIGH DEGREE OF AGING RESISTANCE, AND METHOD FOR PRODUCING SAME
Title (de)
STAHLFLACHPRODUKT MIT GUTER ALTERUNGSBESTÄNDIGKEIT UND VERFAHREN ZU SEINER HERSTELLUNG
Title (fr)
PRODUIT PLAT EN ACIER POSSÉDANT UNE BONNE RÉSISTANCE AU VIEILLISSEMENT ET SON PROCÉDÉ DE FABRICATION
Publication
Application
Priority
- EP 2017068522 W 20170721
- EP 2018068767 W 20180711
Abstract (en)
[origin: WO2019016041A1] The invention relates to a coated flat steel product which is suitable for press hardening and which exhibits a particularly high degree of aging resistance and to a method for producing same. In addition to iron and unavoidable impurities, the steel of the flat steel product consists of (in weight percents) 0.10 - 0.4 % C, 0.05 - 0.5 % Si, 0.5 - 3.0 % Mn, 0.01 - 0.2 % Al, 0.005 - 1.0 % Cr, 0.001 - 0.2 % V, ≤ 0.1 % P, ≤ 0.05 % S, ≤ 0.02 % N, and optionally one or more of the elements "B, Ti, Nb, Ni, Cu, Mo, W" in the following percentages B: 0.0005 - 0.01 %, Ti: 0.001 - 0.1 %, Nb: 0.001 - 0.1 %, Ni: 0.01 - 0.4 %, Cu: 0.01 - 0.8 %, Mo: 0.002 - 1.0 %, W: 0.001 - 1.0 %. The flat steel product has a yield limit with a continuous curve or a yield limit with a difference between the upper yield limit value and the lower yield limit value of maximally 45 MPa and a uniform elongation Ag of at least 11.5%.
IPC 8 full level
C22C 38/00 (2006.01); C21D 8/02 (2006.01); C21D 9/46 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/12 (2006.01); C22C 38/24 (2006.01); C22C 38/32 (2006.01); C23C 2/12 (2006.01)
CPC (source: CN EP US)
C21D 1/26 (2013.01 - CN); C21D 8/0226 (2013.01 - CN EP); C21D 8/0236 (2013.01 - EP); C21D 8/0273 (2013.01 - EP); C21D 8/0278 (2013.01 - EP); C21D 9/46 (2013.01 - EP); C22C 38/001 (2013.01 - EP); C22C 38/02 (2013.01 - EP); C22C 38/04 (2013.01 - EP); C22C 38/06 (2013.01 - EP); C22C 38/12 (2013.01 - EP); C22C 38/20 (2013.01 - CN); C22C 38/22 (2013.01 - CN); C22C 38/24 (2013.01 - CN EP); C22C 38/26 (2013.01 - CN); C22C 38/28 (2013.01 - CN EP); C22C 38/32 (2013.01 - CN EP); C22C 38/38 (2013.01 - CN); C22C 38/42 (2013.01 - CN); C22C 38/44 (2013.01 - CN); C22C 38/46 (2013.01 - CN); C22C 38/50 (2013.01 - CN); C22C 38/54 (2013.01 - CN); C22C 38/58 (2013.01 - CN); C23C 2/12 (2013.01 - CN EP); C23C 2/29 (2022.08 - CN 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 2019016041 A1 20190124; CN 109280861 A 20190129; CN 110959049 A 20200403; CN 110959049 B 20220408; CN 114686777 A 20220701; CN 114686777 B 20240223; EP 3655560 A1 20200527; EP 3655560 B1 20210915; EP 3974554 A1 20220330; ES 2899657 T3 20220314
DOCDB simple family (application)
EP 2018068767 W 20180711; CN 201710986829 A 20171020; CN 201880048391 A 20180711; CN 202111680357 A 20180711; EP 18736938 A 20180711; EP 21196113 A 20180711; ES 18736938 T 20180711