A cable includes a core with a plurality of first wires made of carbon steel and a plurality of strands surrounding the core. Each strand includes a plurality of second wires made of stainless steel. The cable has a maximum cross-sectional dimension less than 2 millimeters.

A cable includes a core with a plurality of first wires made of carbon steel and a plurality of strands surrounding the core. Each strand includes a plurality of second wires made of stainless steel. The cable has a maximum cross-sectional dimension less than 2 millimeters.

There is provided a steel cord including a steel wire and a plating layer that covers the steel wire and has Cu, Zn, and Co, wherein Cu and Zn are alloyed and a region covered with Co and a region not covered with Co are mixed on the outermost surface of the plating layer.

A brass-plated steel cord 1A is immersed in an organic solvent 13. The steel cord that was immersed in the organic solvent 13 is immersed in an aqueous alkaline solution 22. Next, the steel cord 1A that was immersed in the aqueous alkaline solution 22 is immersed in an aqueous silane coupling solution 32. Finally, the steel cord 1A that was immersed in the aqueous silane coupling solution 32 is heated. Thus is manufactured a steel cord 1B equipped with the silane coupling agent, wherein the silane coupling agent is excellently bonded to the surface.

A brass-plated steel cord 1A is immersed in an organic solvent 13. The steel cord that was immersed in the organic solvent 13 is immersed in an aqueous alkaline solution 22. Next, the steel cord 1A that was immersed in the aqueous alkaline solution 22 is immersed in an aqueous silane coupling solution 32. Finally, the steel cord 1A that was immersed in the aqueous silane coupling solution 32 is heated. Thus is manufactured a steel cord 1B equipped with the silane coupling agent, wherein the silane coupling agent is excellently bonded to the surface.

A composite article comprising at least one metal reinforcement element embedded in a polymer material, said metal reinforcement element being at least partially coated with an adhesion promoting layer, said adhesion promoting layer being interposed between said metal reinforcement element and said polymer material, characterized in that said adhesion promoting layer comprises an acid anhydride-grafted polyolefin and a phenolic antioxidant.

A composite article comprising at least one metal reinforcement element embedded in a polymer material, said metal reinforcement element being at least partially coated with an adhesion promoting layer, said adhesion promoting layer being interposed between said metal reinforcement element and said polymer material, characterized in that said adhesion promoting layer comprises an acid anhydride-grafted polyolefin and a phenolic antioxidant.

A pre-stressed concrete structure comprises a steel wire or a steel strand. The steel wire or steel strand has been pre-tensioned before curing of the concrete or grout. The steel wire or steel strand is provided with a zinc coating. The zinc coating has a weight ranging between 70 g/m.sup.2 and 950 g/m.sup.2. The steel wire or steel strand has an outer surface that is provided with indentions to provide mechanical anchorage points in the concrete structure. The steel wire or steel strand is further provided with a passivation layer in the form of a metal oxide layer.

A pre-stressed concrete structure comprises a steel wire or a steel strand. The steel wire or steel strand has been pre-tensioned before curing of the concrete or grout. The steel wire or steel strand is provided with a zinc coating. The zinc coating has a weight ranging between 70 g/m.sup.2 and 950 g/m.sup.2. The steel wire or steel strand has an outer surface that is provided with indentions to provide mechanical anchorage points in the concrete structure. The steel wire or steel strand is further provided with a passivation layer in the form of a metal oxide layer.

A threadlike metallic or metallized reinforcer, for example a thread, film, tape or cord made of carbon steel, at the periphery of which is positioned a layer of metal referred to as surface metal chosen from copper, nickel and copper/nickel alloys, is characterized in that this surface metal layer is itself coated, at least in part, with at least one layer of graphene; preferably, there is grafted, to this graphene, at least one functional group which can crosslink to a polymer matrix. This reinforcer of the invention is effectively protected from corrosion by virtue of the graphene present at the surface; advantageously, it can be adhesively bonded directly, without adhesion primer or addition of metal salt, to an unsaturated rubber matrix, such as natural rubber, by virtue of the possible functionalization of this graphene.