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1.1 This specification covers two types of uncoated stress-relieved round high-carbon steel wire commonly used in prestressed linear concrete construction, as follows:
1.1.1 Type BA wire is used for applications in which cold-end deformation is used for anchoring purposes (Button Anchorage), and
1.1.2 Type WA wire is used for application in which the ends are anchored by wedges, and no cold-end deformation of the wire is involved (Wedge Anchorage).
1.2 Supplement I describes low relaxation wire and relaxation testing for that product.
1.3 The values stated in either inch-pound or SI units are to be regarded as standard. Within the text, the inch-pound units are shown in parentheses. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other, without combining values in any way.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Federal StandardFed. Std. No. 123 Marking for Shipments (Civil Agencies)
ICS Number Code 77.140.15 (Steels for reinforcement of concrete); 77.140.65 (Steel wire, wir ropes and link chains)
UNSPSC Code 31152207(Prestressed concrete steel wire)
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ASTM A421 / A421M-02, Standard Specification for Uncoated Stress-Relieved Steel Wire for Prestressed Concrete, ASTM International, West Conshohocken, PA, 2002, www.astm.orgBack to Top