EP 3050986 A4 20170517 - HIGH-SPEED-TOOL STEEL AND METHOD FOR PRODUCING SAME
Title (en)
HIGH-SPEED-TOOL STEEL AND METHOD FOR PRODUCING SAME
Title (de)
HOCHGESCHWINDIGKEITSWERKZEUGSTAHL UND VERFAHREN ZUR HERSTELLUNG DAVON
Title (fr)
ACIER POUR OUTIL À VITESSE ÉLEVÉE ET PROCÉDÉ DE PRODUCTION DE CE DERNIER
Publication
Application
Priority
- JP 2013201392 A 20130927
- JP 2014066736 W 20140624
Abstract (en)
[origin: EP3050986A1] A high speed tool steel including by mass%: C at from 0.40 to 0.90%; Si at 1.00% or less; Mn at 1.00% or less; Cr at from 4.00 to 6.00%; one or both of W and Mo at a content determined by the relational expression (Mo+0.5W) of from 1.50 to 6.00%; and one or both of V and Nb at a content determined by the relational expression (V+Nb) of from 0.50 to 3.00%, in which the content of N is 0.0200% or less, the balance includes Fe and impurities, and the maximum value of the equivalent circle diameter of a carbide in a sectional structure is 1.00 µm or less.
IPC 8 full level
C22C 38/00 (2006.01); C21C 7/00 (2006.01); C21D 8/06 (2006.01); C22B 9/16 (2006.01); C22C 38/26 (2006.01); C22C 38/52 (2006.01)
CPC (source: EP)
C21D 1/25 (2013.01); C21D 8/021 (2013.01); C21D 8/06 (2013.01); C22C 38/00 (2013.01); C22C 38/001 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/44 (2013.01); C22C 38/46 (2013.01); C22C 38/48 (2013.01); C22C 38/52 (2013.01); C21D 2211/004 (2013.01); C21D 2211/008 (2013.01)
Citation (search report)
- [XI] EP 1469094 A1 20041020 - HITACHI METALS LTD [JP]
- [A] EP 1511873 A1 20050309 - UDDEHOLM TOOLING AB [SE]
- [A] EP 1511872 A1 20050309 - UDDEHOLM TOOLING AB [SE]
- [A] EP 2223763 A1 20100901 - BOEHLER EDELSTAHL GMBH & CO KG [AT]
- [A] US 6761853 B2 20040713 - ISHIDA KIYOHITO [JP], et al
- See references of WO 2015045528A1
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 3050986 A1 20160803; EP 3050986 A4 20170517; EP 3050986 B1 20190731; CN 105579604 A 20160511; CN 111411293 A 20200714; JP 2018048407 A 20180329; JP 6474348 B2 20190227; JP WO2015045528 A1 20170309; TW 201527549 A 20150716; TW I654318 B 20190321; WO 2015045528 A1 20150402
DOCDB simple family (application)
EP 14847363 A 20140624; CN 201480052482 A 20140624; CN 202010142274 A 20140624; JP 2014066736 W 20140624; JP 2015538960 A 20140624; JP 2017215934 A 20171108; TW 103125359 A 20140724