EP 3354764 B1 20200311 - QUENCH HARDENED STEEL
Title (en)
QUENCH HARDENED STEEL
Title (de)
ABSCHRECKGEHÄRTETER STAHL
Title (fr)
ACIER DURCIES PAR TREMPAGE
Publication
Application
Priority
EP 17153320 A 20170126
Abstract (en)
[origin: EP3354764A1] The present invention relates to a hardenable steel, hardened steel components made from the same, and methods for forming the same. The steel contains relatively high levels of molybdenum in comparison to chromium, silicon and manganese, with the molybdenum providing an excellent combination of hardness and impact strength in the hardened steel. The steel can be cold formed then reheat-quench hardened with water as the quenching agent with no cracking and optionally no tempering. The steels formed have Vickers hardness levels of over 630 Hv10 (e.g. over 700 Hv10), and impact strengths of over 3 J/cm 2 (e.g. over 20 J/cm 2 ).
IPC 8 full level
C21D 1/18 (2006.01); C21D 1/25 (2006.01); C21D 1/55 (2006.01); C21D 1/56 (2006.01); C21D 1/60 (2006.01); C21D 8/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/12 (2006.01)
CPC (source: EP)
C21D 1/18 (2013.01); C21D 1/25 (2013.01); C21D 1/55 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/12 (2013.01); C21D 1/60 (2013.01); C21D 8/0226 (2013.01); C21D 2211/008 (2013.01)
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
DOCDB simple family (publication)
EP 3354764 A1 20180801; EP 3354764 B1 20200311; ES 2793323 T3 20201113; HU E049006 T2 20200828; PL 3354764 T3 20200824
DOCDB simple family (application)
EP 17153320 A 20170126; ES 17153320 T 20170126; HU E17153320 A 20170126; PL 17153320 T 20170126