REINFORCEMENT CORD AND TYRE FOR VEHICLE WHEELS COMPRISING SUCH A REINFORCEMENT CORD

摘要

A reinforcement cord (10), configured to be used for example in a tyre (100) for vehicle wheels, comprises at least two steel wires (1) having a carbon content lower than or equal to about 0.40 % and chrome content lower than or equal to about 2% by weight. Such steel wires (1) are twisted together with a winding pitch (P) greater than or equal to about 14 mm. The use of steel having low carbon content allows the costs to be advantageously kept down without negatively impacting on the rigidity of the reinforcement cord. The possibility of using winding pitches of at least about 14 mm makes it possible to increase both the rigidity of the reinforcement cord and the productivity in the winding step, with consequent further reduction of the production costs, and without there being problems of fraying.