WIRE ROD

A wire rod according to an aspect of the present invention includes a chemical composition within a predetermined range; in which an average value of %Mn+2×%Cr over an entirety of the wire rod is 0.50% to 1.00%; 90% or more of a metallographic structure is pearlite by area fraction, and the area fra...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	DAITO Yoshihiro
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	A wire rod according to an aspect of the present invention includes a chemical composition within a predetermined range; in which an average value of %Mn+2×%Cr over an entirety of the wire rod is 0.50% to 1.00%; 90% or more of a metallographic structure is pearlite by area fraction, and the area fraction of the cementite is less than 3%; a maximum grain size of TiN is less than 15 µm; a maximum value of %Mn+2×%Cr in a region where both a S content and an O content are less than 1% in a central portion is 2.0 times or less than the average value of %Mn+2×%Cr over the entirety of the wire rod, and a ratio of the maximum value to a minimum value of %Mn+2×%Cr in a region where both a S content and an O content are less than 1% in an outer circumferential portion is 2.0 or less.