This specification covers two types of uncoated stress-relieved round high-carbon steel wire commonly used in prestressed linear concrete construction. These two types are type BA used for applications in which cold-end deformation is used for anchoring purposes and type WA wire, which is used for applications in which the ends are anchored by wedges; no cold-end deformation of the wire is involved. Required tensile strength, yield strength, and elongation shall be evaluated using a stress-relaxation test. Heat analysis shall be used to determine the percentage of specified elements (especially sulfur and phosphorus) to meet the required chemical composition.
KeywordsASTM A421 - Annealing - High-Carbon Steel - Prestressed Concrete - Prestressed Concrete Products - Steel Wires - Stress Relieving - Wires, Wire Strands, and Wire Ropes
ICS CODE77.140.15 (Steels for reinforcement of concrete); 77.140.65 (Steel wire, wire ropes, and link chains)
UNSPSC CODE31152207 (Prestressed concrete steel wire)
ASTM A421 / A421M-15, Standard Specification for Stress-Relieved Steel Wire for Prestressed Concrete, ASTM International, West Conshohocken, PA, 2015, www.astm.org