EP 3527681 A1 20190821 - STEEL WIRE MATERIAL AND PRODUCTION METHOD FOR STEEL WIRE MATERIAL
Title (en)
STEEL WIRE MATERIAL AND PRODUCTION METHOD FOR STEEL WIRE MATERIAL
Title (de)
STAHLDRAHTMATERIAL UND HERSTELLUNGSVERFAHREN FÜR STAHLDRAHTMATERIAL
Title (fr)
MATÉRIAU DE TYPE FIL D'ACIER ET SON PROCÉDÉ DE PRODUCTION
Publication
Application
Priority
JP 2016080060 W 20161011
Abstract (en)
A steel wire rod according to an aspect of the present invention has a chemical composition in a predetermined range, in which a structure in a central part includes 80 area% to 100 area% of pearlite and a total of 0 area% or more and less than 20 area% of proeutectoid ferrite, proeutectoid cementite, martensite, and bainite; an average lamellar spacing of the pearlite in the central part is 50 nm to 100 nm; an average length of lamellar cementite in the central part is 1.9 µm or less; an average pearlite block size in the central part is 15.0 µm to 30.0 µm; a structure in a surface part includes 70 area% to 100 area% of the pearlite; and an average pearlite block size in the surface part is 0.40 times or more and 0.87 times or less the average pearlite block size in the central part.
IPC 8 full level
C22C 38/00 (2006.01); C21D 8/06 (2006.01); C21D 9/52 (2006.01); C22C 38/32 (2006.01)
CPC (source: EP KR US)
C21D 6/002 (2013.01 - US); C21D 6/005 (2013.01 - US); C21D 6/008 (2013.01 - US); C21D 8/06 (2013.01 - KR); C21D 8/065 (2013.01 - EP US); C21D 9/52 (2013.01 - KR); C21D 9/525 (2013.01 - EP US); C22C 38/001 (2013.01 - EP US); C22C 38/002 (2013.01 - US); C22C 38/02 (2013.01 - EP US); C22C 38/04 (2013.01 - EP US); C22C 38/06 (2013.01 - US); C22C 38/18 (2013.01 - EP); C22C 38/22 (2013.01 - US); C22C 38/24 (2013.01 - US); C22C 38/26 (2013.01 - US); C22C 38/28 (2013.01 - US); C22C 38/32 (2013.01 - KR US); C21D 2211/002 (2013.01 - US); C21D 2211/003 (2013.01 - US); C21D 2211/005 (2013.01 - US); C21D 2211/008 (2013.01 - US); C21D 2211/009 (2013.01 - EP US); C22C 38/06 (2013.01 - EP); C22C 38/22 (2013.01 - EP); C22C 38/24 (2013.01 - EP); C22C 38/26 (2013.01 - EP); C22C 38/28 (2013.01 - EP); C22C 38/32 (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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3527681 A1 20190821; EP 3527681 A4 20200415; BR 112019006654 A2 20190702; CA 3039303 A1 20180419; CN 109963957 A 20190702; JP 6587036 B2 20191009; JP WO2018069954 A1 20190926; KR 20190067831 A 20190617; MX 2019004146 A 20190801; US 2020048731 A1 20200213; WO 2018069954 A1 20180419
DOCDB simple family (application)
EP 16918676 A 20161011; BR 112019006654 A 20161011; CA 3039303 A 20161011; CN 201680089960 A 20161011; JP 2016080060 W 20161011; JP 2018544586 A 20161011; KR 20197012888 A 20161011; MX 2019004146 A 20161011; US 201616340653 A 20161011