Steel cord for reinforcing a rubber article composed of steel wire and rubber material, radial tire, and motorcycle radial tire cover.

A steel cord for the reinforcement of a rubber article and is characterized in being made of twisting a plurality of steel filaments having a tensile strength of not less than 2700 N / mm2, being the total elongation of a 3, 0-7, 0% and the ratio of cord outer diameter to twisting pitch of not less than 0, 07 but not more than 0, 15.