| 摘要 |
A steel cord for reinforcing a rubber article has a multi-twisted structure formed by twisting a plurality of sheath strands (2) formed by twisting a plurality of wires around a core strand (1) formed by twisting a plurality of wires, and the core strand (1) and the sheath strands (2) include at least a 2-layer-twisted structure formed by twisting core wires and sheath wires respectively. The relationship represented by the following formula 1.8@[(S�cos2alpha)/{r�(phi1+phi2)}]�100@4.2 is satisfied, wherein phi1: the diameter of an outermost wire of the strand (1), phi2: the diameter of an outermost wire of the strand (2), r: the center distance between the strand (1) and the strand (2), S: the cross section of the strand (2), and alpha: the twist angle of the strand (2). |
