EP 3382051 A1 20181003 - STEEL, CARBURIZED STEEL COMPONENT, AND CARBURIZED STEEL COMPONENT PRODUCTION METHOD
Title (en)
STEEL, CARBURIZED STEEL COMPONENT, AND CARBURIZED STEEL COMPONENT PRODUCTION METHOD
Title (de)
STAHL, KOMPONENTE AUS EINSATZGEHÄRTETEM STAHL UND HERSTELLUNGSVERFAHREN FÜR KOMPONENTE AUS EINSATZGEHÄRTETEM STAHL
Title (fr)
ACIER, CONSTITUANT D'ACIER CÉMENTÉ, ET PROCÉDÉ DE PRODUCTION DE CONSTITUANT D'ACIER CÉMENTÉ
Publication
Application
Priority
- JP 2015232118 A 20151127
- JP 2016084997 W 20161125
Abstract (en)
A steel according to an aspect of the present invention has a chemical composition within a predetermined range, in which a hardenability index Ceq ranges from greater than 7.5 to smaller than 44.0, an AlN precipitation index I AlN ranges from greater than 0.00030 to smaller than 0.00110, a metallographic structure includes ferrite ranging from 85 to 100 area%, an average distance between sulfides, which are observed in a cross section parallel to a rolling direction of the steel and have an equivalent circle diameter ranging from 1 µm or greater to smaller than 2 µm, is shorter than 30.0 µm, and a presence density of the sulfides, which are observed in the cross section parallel to the rolling direction of the steel and have an equivalent circle diameter ranging from 1 µm or greater to smaller than 2 µm, is 300 pieces/mm 2 or more.
IPC 8 full level
C22C 38/00 (2006.01); C21D 1/06 (2006.01); C21D 8/06 (2006.01); C21D 9/28 (2006.01); C21D 9/32 (2006.01); C22C 38/60 (2006.01); C23C 8/22 (2006.01); C23C 8/80 (2006.01)
CPC (source: EP KR US)
C21D 1/06 (2013.01 - KR US); C21D 8/005 (2013.01 - EP US); C21D 8/06 (2013.01 - KR); C21D 8/065 (2013.01 - EP US); C21D 9/28 (2013.01 - KR US); C21D 9/32 (2013.01 - KR US); C22C 38/00 (2013.01 - EP US); C22C 38/001 (2013.01 - EP KR US); C22C 38/002 (2013.01 - EP US); C22C 38/005 (2013.01 - EP US); C22C 38/02 (2013.01 - EP KR US); C22C 38/04 (2013.01 - EP KR US); C22C 38/06 (2013.01 - EP KR US); C22C 38/20 (2013.01 - EP US); C22C 38/22 (2013.01 - EP US); C22C 38/24 (2013.01 - EP US); C22C 38/26 (2013.01 - EP US); C22C 38/28 (2013.01 - EP US); C22C 38/32 (2013.01 - KR); C22C 38/54 (2013.01 - EP US); C22C 38/60 (2013.01 - EP US); C23C 8/22 (2013.01 - EP KR US); C23C 8/32 (2013.01 - US); C23C 8/80 (2013.01 - EP KR US); C21D 2211/004 (2013.01 - EP US); C21D 2211/005 (2013.01 - EP US)
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 3382051 A1 20181003; EP 3382051 A4 20190619; CN 108368574 A 20180803; JP 6468366 B2 20190213; JP WO2017090738 A1 20180913; KR 102099767 B1 20200410; KR 20180072778 A 20180629; US 2018347025 A1 20181206; WO 2017090738 A1 20170601
DOCDB simple family (application)
EP 16868681 A 20161125; CN 201680068366 A 20161125; JP 2016084997 W 20161125; JP 2017552734 A 20161125; KR 20187014319 A 20161125; US 201615778153 A 20161125