EP 3336214 B1 20200513 - HIGH-STRENGTH SPRING, METHOD FOR PRODUCING SAME, STEEL FOR HIGH-STRENGTH SPRING, AND METHOD FOR PRODUCING SAME
Title (en)
HIGH-STRENGTH SPRING, METHOD FOR PRODUCING SAME, STEEL FOR HIGH-STRENGTH SPRING, AND METHOD FOR PRODUCING SAME
Title (de)
HOCHFESTE FEDER, VERFAHREN ZUR HERSTELLUNG DAVON, STAHL FÜR EINE HOCHFESTE FEDER UND VERFAHREN ZUR HERSTELLUNG DAVON
Title (fr)
RESSORT À HAUTE RÉSISTANCE, PROCÉDÉ DE FABRICATION DUDIT RESSORT, ACIER DESTINÉ À UN RESSORT À HAUTE RÉSISTANCE ET PROCÉDÉ DE PRODUCTION DUDIT ACIER
Publication
Application
Priority
- JP 2016205535 A 20161019
- JP 2017061981 A 20170327
- JP 2017095054 A 20170511
- JP 2017020501 W 20170601
Abstract (en)
[origin: EP3336214A1] A high strength spring containing, by mass%, C: 0.40 to 0.50%, Si: 1.00 to 3.00%, Mn: 0.30 to 1.20%, Ni: 0.05 to 0.50%, Cr: 0.35 to 1.50%, Mo: 0.03 to 0.50%, Cu: 0.05 to 0.50%, Al: 0.005 to 0.100%, V: 0.05 to 0.50%, Nb: 0.005 to 0.150%, N: 0.0100 to 0.0200%, P: limited to be less than or equal to 0.015%, S: limited to be less than or equal to 0.010%, and the balance of Fe and inevitable impurities, wherein a Nb-compound including at least one of Nb-carbide, Nb-nitride and Nb-carbonitride is included, and wherein a V-compound including at least one of V-carbide and V-carbonitride that is precipitated around the Nb-compound is included.
IPC 8 full level
C22C 38/00 (2006.01); C21D 1/25 (2006.01); C21D 9/02 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/42 (2006.01); C22C 38/44 (2006.01); C22C 38/46 (2006.01); C22C 38/48 (2006.01)
CPC (source: CN EP KR)
C21D 1/18 (2013.01 - CN); C21D 1/25 (2013.01 - EP); C21D 9/02 (2013.01 - CN EP KR); C22C 38/001 (2013.01 - CN EP); C22C 38/02 (2013.01 - EP KR); C22C 38/04 (2013.01 - CN EP KR); C22C 38/06 (2013.01 - EP KR); C22C 38/42 (2013.01 - CN EP KR); C22C 38/44 (2013.01 - CN EP KR); C22C 38/46 (2013.01 - CN EP KR); C22C 38/48 (2013.01 - CN EP KR); C22C 38/56 (2013.01 - CN); C21D 2211/004 (2013.01 - EP)
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 3336214 A1 20180620; EP 3336214 A4 20180926; EP 3336214 B1 20200513; BR 112018003077 A2 20181002; BR 112018003077 B1 20230117; CN 115125455 A 20220930; KR 101947973 B1 20190213; KR 20180050305 A 20180514; WO 2018074003 A1 20180426
DOCDB simple family (application)
EP 17835988 A 20170601; BR 112018003077 A 20170601; CN 202210849340 A 20170601; JP 2017020501 W 20170601; KR 20187005976 A 20170601