ISO 10544:2024

Overview

ISO 10544:2024 specifies technical requirements for cold-reduced steel wire used for the reinforcement of concrete and for manufacture of welded fabric (wire mesh). The second edition updates the 1992 version and covers wire produced from rod by drawing through dies or rollers (coil form straightened products included). Example steel grades given are CRB500 and CRB540H; other grades may be used by agreement. Wires produced from finished products (plates, rails) are outside the scope.

Key Topics

This standard defines measurable and verifiable requirements to ensure consistent bond, strength and conformity:

• Dimensions, masses and tolerances
  • Nominal diameters: 4 mm to 18 mm (recommended diameters listed).
  • Mass/length requirements (e.g., 4 mm ≈ 0.099 kg/m; 8 mm ≈ 0.395 kg/m; 12 mm ≈ 0.888 kg/m; 18 mm ≈ 1.998 kg/m).
• Geometry of bond-enhancing surfaces
  • Ribbed wire: two or more rows of transverse ribs; minimum specific projected rib area (f_r) specified by diameter (e.g., f_r ≥ 0.036 for 4 mm ≤ d