Steel cord for tire and radial tire

摘要

A steel cord for a tire which increases a corrosion resistance and durability and improves the energy efficiency during curing of the tire and a radial tire using the same. This steel cord has an m+n twist structure comprising a core (11) containing m pieces of wires and a sheath (12) containing n pieces of wires, in which a rubber compound or an elastomer compound (13) is filled into a space between the core (11) and the sheath (12). Otherwise, the steel cord has a 1xN twist structure containing N pieces of wires, in which a rubber compound or an elastomer compound (13) is filled into a space at a cord center surrounded by the N pieces of wires.