High-carbon steel wire rod exhibiting excellent workability

1. A wire rod that is hot-rolled into a diameter of 4-8 mm,

wherein the wire rod contains, in mass %:

C: 0.6 to 1.1%;

Si: 0.1 to 0.5%;

Mn: 0.2 to 0.6%;

S: 0.004 to 0.015%; and

Cr: 0.03 to less than 0.05%;

with a balance including Fe and inevitable impurities in which P is limited to 0.02% by mass or lower and Al is limited to 0.003% by mass or lower,

wherein the wire rod has a pearlite in a peripheral portion which is defined as an area within a depth of 500 μm from a surface of the wire rod, and

wherein a crystal plane of a ferrite in the pearlite in the peripheral portion has, in a cross section of the wire rod, a {110} crystal plane having an accumulation degree of the crystal plane being 1.25 or more, and

a tensile strength TS (MPa) of the wire rod satisfies

200+980×( C % by mass)< TS< 400+980×( C % by mass)  (Equation 1).

2. The wire rod according to claim 1 , wherein

a finishing temperature of the hot-rolling is 1000° C. or more.

3. The wire rod according to claim 1 , wherein the number of torsion is 15 turns or more.

4. The wire rod according to claim 1 , wherein

the wire rod further contains one or more components of: by mass %,

B: 0.0001 to 0.0050%;

V: 0.03 to 0.10%;

Nb: 0.01 to 0.10%;

Cu: 0.05 to 0.80%;

Ni: 0.05 to 0.20%; and

Ti: 0.001 to 0.1%.

5. The wire rod according to claim 1 , wherein

the wire rod has a scale layer on the surface thereof, and

an adhesion ratio of the scale layer is 70% or more.

6. The wire rod according to claim 1 , wherein

the wire rod has a scale layer having a thickness in a range of 6 to 15 μm on the surface thereof, and,

a remaining scale ratio of the scale layer is 0.07% or lower when 6% strain is applied.