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Last Updated: Aug 16, 2017
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ASTM A421/A421M-98a
Standard Specification for Uncoated Stress-Relieved Steel Wire for Prestressed Concrete
Standard Specification for Uncoated Stress-Relieved Steel Wire for Prestressed Concrete
A0421_A0421M-98A
ASTM|A0421_A0421M-98A|en-US
Standard Specification for Uncoated Stress-Relieved Steel Wire for Prestressed Concrete
Standard
A421/A421M Standard Specification for Uncoated Stress-Relieved Steel Wire for Prestressed Concrete>
new
BOS Vol. 01.04 Committee A01
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77.00
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Scope
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 inch-pound units are to be regarded as the standard.