Wire Rod For Graphitization Heat Treatment, And Graphite Steel

Abstract: Disclosed in the present specification are: a wire rod for graphitization heat treatment, the wire rod having fine graphite grains uniformly distributed in a matrix during graphitization heat treatment while significantly reducing graphitization heat treatment time; and a graphite steel. According to one embodiment of the disclosed wire rod for graphitization heat treatment, the wire rod comprises, by wt%, 0.65-0.85% of C, 2.00-3.00% of Si, 0.15-0.35% of Mn, 0.005-0.1% of Ti, 0.01% or less of N, 0.0005% or less of B, 0.05% or less of P, 0.05% or less of S, and the balance of Fe and inevitable impurities, wherein the value of the following formula (1) satsifies -1 to 1, and the microstructure can comprise, by area fraction, 40% or less of ferrite, bainite and martensite in an amount of 5% or less as the sum thereof, and the balance of pearlite. Formula (1): 100*([Mn]-0.25)2 - (100*[N])2 In formula (1), [Mn] and [N] mean the wt% of each alloy element.

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