Norma Astm

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Designation: A 82 – 97a

American Association State Highway and Transportation Officials Standard AASHTO No.: M 32

Standard Specification for

Steel Wire, Plain, for Concrete Reinforcement1
This standard is issued under the fixed designation A 82; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.A number in parentheses indicates the year of last reapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense.

1. Scope 1.1 This specification covers cold-drawn steel wire, asdrawn or galvanized, to be used as such, or in fabricated form, for the reinforcement ofconcrete, in sizes not less than 2.03 mm (0.080 in.) nominal diameter. 1.2 Supplement S1 describes high strength wire, which shall be furnished when specifically ordered. It shall be permissible to furnish high strength wire in place of regular wire if mutually agreed to by the purchaser and the supplier. 1.3 The values stated in either inch-pound units or SI units are to be regarded as standard. Withinthe text the inch-pound units are shown in parentheses. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values may result in nonconformance with the specification. 2. Referenced Documents 2.1 ASTM Standards: A 185 Specification for Steel Welded Wire Fabric, Plain, for Concrete Reinforcement2 A 370 Test Methods andDefinitions for Mechanical Testing of Steel Products3 A 641 Specification for Zinc-Coated (Galvanized) Carbon Steel Wire4 A 700 Practices for Packaging, Marking, and Loading Methods for Steel Products for Domestic Shipment5 E 83 Practice for Verification and Classification of Extensometers6 2.2 U.S. Military Standards: MIL-STD-129 Marking for Shipment and Storage7 MIL-STD-163 Steel Mill ProductsPreparation for Shipment and Storage7 2.3 U.S. Federal Standard:
1 This specification is under the jurisdiction of ASTM Committee A-1 on Steel, Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee A01.05 on Steel Reinforcement. Current edition approved December 10, 1997. Published November 1998. Originally published as A 82 – 21 T. Last previous edition A 82 – 97. 2Annual Book of ASTM Standards, Vol 01.04. 3 Annual Book of ASTM Standards, Vol 01.03. 4 Annual Book of ASTM Standards, Vol 01.06. 5 Annual Book of ASTM Standards, Vol 01.05. 6 Annual Book of ASTM Standards, Vol 03.01. 7 Available from Standardization Documents Order Desk, Bldg. 4, Section D, 700 Robbins Ave., Philadelphia, PA 19111-5094.

Fed. Std. No. 123 Marking for Shipments (Civil Agencies)72.4 Other Standard: ACI 318 Building Code Requirements for Structural Concrete8 3. Ordering Information 3.1 Orders for material to this specification should include the following information: 3.1.1 Quantity (weight), 3.1.2 Name of material (cold-drawn steel wire for concrete reinforcement), 3.1.3 Wire size number (see Section 8), 3.1.4 Packaging (see Section 15), and 3.1.5 ASTM designation and yearof issue. 3.1.6 Special requirements, if any. (See Supplement S1.)
NOTE 1—A typical ordering description is as follows: 100 000 lb cold-drawn steel wire for concrete reinforcement, Size No. W5 in 500 lb secured coils, to ASTM – _________.

4. Materials and Manufacture 4.1 The steel shall be made by one of the following processes: open-hearth, electric furnace, or basic-oxygen. 4.2 The wire shallbe cold drawn from rods that have been hot rolled from billets. 4.3 Unless otherwise specified, the wire shall be supplied uncoated. When specified as galvanized, it shall be galvanized at finish size. 5. Mechanical Property Requirements 5.1 Tension Tests: 5.1.1 When tested as described in Test Methods and Definitions A 370, the material, except as specified in 5.1.2, shall conform to the tensile...
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