EP 3150738 A1 20170405 - STEEL WIRE MATERIAL
Title (en)
STEEL WIRE MATERIAL
Title (de)
STAHLDRAHTMATERIAL
Title (fr)
MATÉRIAU DE FIL D'ACIER
Publication
Application
Priority
- JP 2014114429 A 20140602
- JP 2015065897 W 20150602
Abstract (en)
A steel wire rod includes, as a chemical composition, C, Si, Mn, Cr, Al, N, P, S, and optionally includes one or more selected from the group consisting of Mo, V, Ti, Nb, and B, and a remainder of Fe and impurities; in which a metallographic structure includes a pearlite and an area ratio of the pearlite is 85% or more; the average lamellar spacing of the pearlite is 50 nm to 100 nm; and when the Si content is represented by [%Si] by mass%, the Cr content in a cementite in the pearlite is represented by [%Cr¸] by mass%, and the Cr content in a ferrite in the pearlite is represented by [%Cr±] by mass%, [%Si], [%Cr¸], and [%Cr±] satisfy the following expression "([%Cr¸]/[%Cr±])‰¥(2.0+[%Si]×10)".
IPC 8 full level
C21D 8/06 (2006.01); C21D 9/52 (2006.01); C22C 38/00 (2006.01); C22C 38/32 (2006.01)
CPC (source: EP KR)
C21D 8/06 (2013.01 - EP KR); C21D 9/52 (2013.01 - EP KR); C22C 38/00 (2013.01 - EP); C22C 38/001 (2013.01 - KR); C22C 38/02 (2013.01 - EP KR); C22C 38/04 (2013.01 - EP KR); C22C 38/06 (2013.01 - KR); C22C 38/16 (2013.01 - EP); C22C 38/18 (2013.01 - EP KR); C22C 38/20 (2013.01 - EP); C22C 38/22 (2013.01 - EP); C22C 38/26 (2013.01 - EP); C22C 38/28 (2013.01 - EP); C22C 38/32 (2013.01 - EP KR); C22C 38/40 (2013.01 - EP); C22C 38/54 (2013.01 - EP); C21D 2211/009 (2013.01 - 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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3150738 A1 20170405; EP 3150738 A4 20180124; CN 106460119 A 20170222; CN 106460119 B 20190111; JP 6288264 B2 20180307; JP WO2015186701 A1 20170420; KR 101924709 B1 20181203; KR 20160147041 A 20161221; WO 2015186701 A1 20151210
DOCDB simple family (application)
EP 15803111 A 20150602; CN 201580028871 A 20150602; JP 2015065897 W 20150602; JP 2016525185 A 20150602; KR 20167033721 A 20150602