ASTM A881/A881M-02
(Specification)Standard Specification for Steel Wire, Deformed, Stress-Relieved or Low-Relaxation for Prestressed Concrete Railroad Ties
Standard Specification for Steel Wire, Deformed, Stress-Relieved or Low-Relaxation for Prestressed Concrete Railroad Ties
SCOPE
1.1 This specification covers uncoated, deformed, stress-relieved, and stress-relieved low-relaxation wire for use as prestressed tendons in concrete railroad ties.
1.2 The values stated in either-inch-pound units or SI units are to be regarded separately 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 must be used independently of the other. Combining values for the two systems may result in non-conformance with the specification.
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Designation: A 881/A881M – 02
Standard Specification for
Steel Wire, Deformed, Stress-Relieved or Low-Relaxation for
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Prestressed Concrete Railroad Ties
This standard is issued under the fixed designationA881/A881M; 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.
1. Scope* 3.1.2 low-relaxation wire, n—indented cold-drawn wire,
straightened, that receives a suitable continuous thermo-
1.1 This specification covers uncoated, deformed, stress-
mechanical treatment as the last operation to produce the
relieved, and stress-relieved low-relaxation wire for use as
properties listed.
prestressed tendons in concrete railroad ties.
3.1.3 stress-relieved wire, n—indented cold-drawn wire,
1.2 The values stated in either-inch-pound units or SI units
straightened, that receives a suitable continuous thermal treat-
are to be regarded separately as standard. Within the text, the
ment as a last operation to produce the properties listed.
inch-pound units are shown in parentheses. The values stated
in each system are not exact equivalents; therefore, each
4. Ordering Information
system must be used independently of the other. Combining
4.1 Ordersfordeformedwireunderthisspecificationshould
valuesforthetwosystemsmayresultinnon-conformancewith
include the following information:
the specification.
4.1.1 Quantity (mass [weight]),
2. Referenced Documents 4.1.2 Name of material (deformed steel stress-relieved or
low-relaxation wire for prestressed concrete railroad ties),
2.1 ASTM Standards:
4.1.3 Grade (see Table 1),
A 370 Test Methods and Definitions for MechanicalTesting
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4.1.4 Nominal diameter,
of Steel Products
4.1.5 Packaging,
A 421/A 421M Specification for Uncoated Stress-Relieved
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4.1.6 Stress-relieved or low relaxation,
Steel Wire for Prestressed Concrete
4.1.7 ASTM designation and year of issue, and
2.2 U.S. Military Standards:
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4.1.8 Special requirements, if any.
MIL-STD-129 Marking for Shipment and Storage
MIL-STD-163 Steel Mill Products, Preparation for Ship-
NOTE 1—A typical ordering description is as follows: 23 000 kg (50
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ment and Storage
000 lb) Grade 235, deformed stress-relieved steel wire for prestressed
concreterailroadties.5.03-mm(0.198-in.)diameterwireinapproximately
2.3 U.S. Federal Standard:
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550-kg (1200-lb) coils, ASTM A 881/A 881M-________.
Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
5. Materials and Manufacture
3. Terminology
5.1 The steel shall be made by the basic-oxygen, open-
3.1 Definitions of Terms Specific to This Standard:
hearth, or electric-furnace process.
3.1.1 deformed steel wire for railroad ties, n—a deformed,
5.2 The base metal shall be carbon steel of such quality that
uncoated steel stress-relieved or low-relaxation wire intended
when drawn and stress relieved, or thermo-mechanically
for use as reinforcement in prestressed concrete railroad ties,
treated at a suitable wire size, shall have the properties and
the wire surface having deformations that reduce longitudinal
characteristics prescribed in the specification.
movement of the wire in such construction, and conform to the
provisions of Section 7.
6. Mechanical Property Requirements
6.1 General—Deformed wire shall be supplied in coils to
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This specification is under the jurisdiction of ASTM Committee A01 on Steel,
the specified mechanical properties in Table 1. Nominal
Stainless Steel, and RelatedAlloys and is the direct responsibility of Subcommittee
diameters of wire not specifically itemized in this specification
A01.05 on Steel Reinforcement.
may be employed providing that the strength is defined and
Current edition approved Sept. 10, 2002. Published June 2003. Originally
approved in 1990 . Last previous edition approved in 1999 as A 881/A 881M – 99.
they conform otherwise to the requirements of this specifica-
2
Annual Book of ASTM Standards, Vol 01.03.
tion.
3
Annual Book of ASTM Standards, Vol 01.04.
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AvailablefromStandardizationDocumentsOrderDesk,Bldg.4SectionD,700
Robbins Ave., Philadelphia, PA 19111-5094.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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A 881/A881M – 02
TABLE 1 Breaking Strength Requirements
Nominal Mass
Wire Nominal Breaking Nominal (Weight), g/m
A
Grade Diameter Strength Area (lb/1000 ft)
2 2
mm (in.) kN (lbf) mm (in. )
1550 (225) 5.03 (0.198) 30.8 (6920) 19.86 (0.0308) 155.9 (104.8)
1620 (235) 5.03 (0.198) 32.2 (7230) 19.86 (0.0308) 155.9 (104.8)
1720 (250) 5.03 (0.198) 34.3 (7700) 19.86 (0.0308
...
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