Wire rod of which softening heat treatment can be omitted, and manufacturing method therefor

A method of manufacturing a wire rod allowing a softening heat treatment to be omitted, the method comprising:

• heating a billet at a temperature within a range of 950 to 1050° C., the billet comprising, by weight %, 0.2 to 0.45% of carbon (C), 0.02 to 0.4% of silicon (Si), 0.3 to 1.5% of manganese (Mn), 0.3 to 1.5% of chromium (Cr), 0.02 to 0.05% of aluminum (Al), 0.01 to 0.5% of molybdenum (Mo), 0.01% or less of nitrogen (N), and a balance of iron (Fe) and inevitable impurities;
• performing two step hot rolling on the heated billet to obtain a rod wire;
• coiling the rod wire;
• and
• cooling the coiled rod wire to 600° C. at a cooling rate of 2° C./sec, and then cooling the cooled rod wire at a cooling rate of 3° C./sec,
• wherein the performing of the two step hot rolling comprises:
• performing intermediate finish rolling on the heated billet;
• and
• performing finish rolling at a temperature of 730° C. to Ae3 with a critical deformation amount or more expressed by the following Relational Expression 1.
• Critical Deformation Amount=−2.46Ceq2+3.11Ceq−0.39 [Relational Expression 1]
• (Ceq=C+Mn/6+Cr/5, and C, Mn, and Cr are weight %)