EP 4324953 A1 20240221 - STEEL PART AND MANUFACTURING METHOD OF STEEL PART
Title (en)
STEEL PART AND MANUFACTURING METHOD OF STEEL PART
Title (de)
STAHLTEIL UND HERSTELLUNGSVERFAHREN FÜR EIN STAHLTEIL
Title (fr)
PIÈCE EN ACIER ET PROCÉDÉ DE FABRICATION DE PIÈCE EN ACIER
Publication
Application
Priority
- JP 2021102030 A 20210618
- JP 2022023540 W 20220610
Abstract (en)
A steel component having excellent wear resistance is provided. The steel component has a defined chemical composition. The average grain size of prior austenite grains is 25 µm or less. Carbides containing at least one of Nb, Ti, of V are included. Among the carbides, the average particle size of particles having a grain size of 0.1 µm or more is 0.15 µm to 2.5 µm, and the average particle size of particles having a particle size less than 0.1 µm is 0.005 µm to 0.05 µm.
IPC 8 full level
C22C 38/00 (2006.01); C21D 9/00 (2006.01); C21D 9/46 (2006.01); C22C 38/38 (2006.01); C22C 38/60 (2006.01)
CPC (source: EP)
C21D 6/002 (2013.01); C21D 6/005 (2013.01); C21D 6/008 (2013.01); C21D 9/00 (2013.01); C21D 9/46 (2013.01); C22C 38/005 (2013.01); C22C 38/008 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/22 (2013.01); C22C 38/24 (2013.01); C22C 38/26 (2013.01); C22C 38/28 (2013.01); C22C 38/32 (2013.01); C22C 38/38 (2013.01); C22C 38/42 (2013.01); C22C 38/46 (2013.01); C22C 38/60 (2013.01)
Citation (search report)
See references of WO 2022264948A1
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 4324953 A1 20240221; CN 117413081 A 20240116; JP 2023116800 A 20230822; JP 7334868 B2 20230829; JP WO2022264948 A1 20221222; TW 202302876 A 20230116; TW I794118 B 20230221; WO 2022264948 A1 20221222
DOCDB simple family (application)
EP 22824938 A 20220610; CN 202280038848 A 20220610; JP 2022023540 W 20220610; JP 2022566277 A 20220610; JP 2023102653 A 20230622; TW 111122349 A 20220616