A steel cord for tire reinforcement according to the present invention is elongated in one direction and comprises a plurality of strands twisted periodically on one another, and the steel cord for tire reinforcement is characterized in that the steel cord...

A steel cord for a tire reinforcement having a non-circular cross-section includes: a lower strand; and an upper strand that surrounds an outer circumferential surface of the lower strand so as to have an m+n structure, wherein the lower strand includes a ...