| 摘要 |
The steel cord for reinforcement of an off-road tire has a superior resistance to penetration and durability with respect to sharp objects. It has a 3x3, a 3x4, a 4x3 or a 4x4 structure, an identical cord diameter at all points along the steel cord in a longitudinal direction, a cord lay length equal to from 3.5 to 7.5 times the cord diameter and an elongation at break of at least 4%. The steel cord is made up of element wires, each having a wire diameter of from 0.3 to 0.5 mm and a tensile strength of from 2000 to 3300 MPa.
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