MEDIUM CARBON STEEL WIRE ROD PROCESSED GOOD USING THE SAME AND METHODS FOR MANUFACTURING THEREOF

摘要

The present invention provides a medium carbon steel wire rod capable of rapidly finishing heat treatment by accelerating a spheroidizing speed, and a processed product using the same, and a manufacturing method for the same. According to an embodiment of the present invention, the medium carbon steel wire rod includes: 0.2-0.5 wt% of C; 0.03-0.4 wt% of Si; 0.5-1.5 wt% of Mn; 0-0.02 wt% of P; 0-0.1 wt% of S; 0.02-0.05 wt% of Al; 0.006-0.01 wt% of N; and residues including Fe and inevitable impurities. AlN is precipitated inside, and 20 or more pieces of AlN in 30 nm or less are distributed per μm^2.