This International Standard specifies technical requirement for cold-reduced steel wire designed for the reinforcement of concrete for use in welded fabric. One steel grade, 500 N/mm2 is defined. This International Standard applies to wire made from rod by working through dies or rollers. The production process is at the discretion of the manufacturer. For wire supplied in coil form, the requirements of this International Standard apply to the straightened product. Wires produced from finished products, such as plates and railway rails, are excluded.