EP 2660348 B1 20171115 - DIE STEEL HAVING SUPERIOR RUSTING RESISTANCE AND THERMAL CONDUCTIVITY, AND METHOD FOR PRODUCING SAME
Title (en)
DIE STEEL HAVING SUPERIOR RUSTING RESISTANCE AND THERMAL CONDUCTIVITY, AND METHOD FOR PRODUCING SAME
Title (de)
GEWALZTER STAHL MIT HERVORRAGENDER KORROSIONSFESTIGKEIT UND WÄRMELEITFÄHIGKEIT SOWIE HERSTELLUNGSVERFAHREN DAFÜR
Title (fr)
ACIER POUR MATRICE PRÉSENTANT UNE RÉSISTANCE À LA ROUILLE AINSI QU'UNE CONDUCTIVITÉ THERMIQUE SUPÉRIEURES ET PROCÉDÉ POUR SA PRODUCTION
Publication
Application
Priority
- JP 2010289442 A 20101227
- JP 2011072317 W 20110929
Abstract (en)
[origin: EP2660348A1] Provided are: a mold steel which, in addition to satisfying the basic characteristics of mold steel, also combines superior rust resistance and superior thermal conductivity; and a method for producing the same. Steel having a composition containing, in terms of mass%: 0.07 to 0.15% C; between 0 and 0.8% Si, exclusive; between 0 and 1.5% Mn, exclusive; less than 0.05% P; less than 0.06% S; between 0 and 0.9% Ni, exclusive; 2.9 to 4.9% Cr; Mo and W either alone or in a complex such that (Mo + 1/2W) is between 0 and 0.8%, exclusive; between 0 and 0.15% V, exclusive; and 0.25 to 1.8% Cu, the remainder being composed of Fe and unavoidable impurities, wherein the mold steel has a hardness of 30 to 42 HRC. Preferably, Al, which is an unavoidable impurity, is restricted to less than 0.1%, N is restricted to less than 0.06%, and O is restricted to less than 0.005%. The aforementioned hardness can be obtained through quenching and through tempering at 530°C or higher.
IPC 8 full level
C22C 38/00 (2006.01); C21D 6/00 (2006.01); C22C 38/60 (2006.01)
CPC (source: EP KR)
C21D 1/18 (2013.01 - EP KR); C21D 1/25 (2013.01 - EP KR); C22C 38/001 (2013.01 - EP); C22C 38/002 (2013.01 - EP); C22C 38/02 (2013.01 - EP); C22C 38/04 (2013.01 - EP); C22C 38/06 (2013.01 - EP); C22C 38/42 (2013.01 - EP KR); C22C 38/44 (2013.01 - EP KR); C22C 38/46 (2013.01 - EP KR); C22C 38/60 (2013.01 - EP KR)
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 2660348 A1 20131106; EP 2660348 A4 20140903; EP 2660348 B1 20171115; CN 103282530 A 20130904; CN 103282530 B 20150513; JP 5534482 B2 20140702; JP WO2012090562 A1 20140605; KR 101545417 B1 20150818; KR 20130091351 A 20130816; WO 2012090562 A1 20120705
DOCDB simple family (application)
EP 11854240 A 20110929; CN 201180062842 A 20110929; JP 2011072317 W 20110929; JP 2012550755 A 20110929; KR 20137015973 A 20110929