ASTM A648-04a

Standard Specification for Steel Wire, Hard Drawn for Prestressing Concrete Pipe

ABSTRACT
This specification covers two classes of uncoated, high-strength, hard-drawn steel wires for use in the manufacture of prestressed concrete pipe. The steel shall be made by the open-hearth, basic-oxygen, or electric-furnace process, and shall be free of injurious piping and undue segregation. The wire shall be cold drawn to produce the desired mechanical properties and there shall be no welds or joints in the finished wire. Cast or heat analysis of the steel shall conform to the chemical requirements specified for carbon, manganese, phosphorus, sulfur, silicon, and nitrogen. The tension and relaxation tests shall conform to the specified tensile requirements including tensile strength and breaking strength. Torsion test shall also be performed where test specimens shall be inspected for primary break shear area and longitudinal (spiral) splitting following completion of the test.
SCOPE
1.1 This specification covers two classes of uncoated, high-strength, hard-drawn steel wire for use in the manufacture of prestressed concrete pipe. In application, the wire is helically wrapped on the pipe maintaining tension by mechanical means not including drawing dies.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are provided for information only.
1.3 Supplementary requirements describe hydrogen embrittlement resistance test acceptance criteria.
1.4 The following caveat pertains only to the test method portions of this specification, 6.2.3 and 6.4.3: This standard does not purport to address the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 31-Aug-2004
• ICS: 77.140.15 - Steels for reinforcement of concrete
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.05 - Steel Reinforcement

Relations

• Replaces: ASTM A648-04 - Standard Specification for Steel Wire, Hard Drawn for Prestressing Concrete Pipe
• Effective Date: 01-Sep-2004
• Replaced By: ASTM A648-11 - Standard Specification for Steel Wire, Hard Drawn for Prestressing Concrete Pipe
• Effective Date: 01-Jan-2011
• Referred By: ASTM A1032-15(2019) - Standard Test Method for Hydrogen Embrittlement Resistance for Steel Wire Hard-Drawn Used for Prestressed Concrete Pipe
• Effective Date: 01-Sep-2004

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: A648 – 04a
Standard Specification for
1
Steel Wire, Hard Drawn for Prestressing Concrete Pipe
This standard is issued under the fixed designation A648; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope* Structures
2.2 ANSI Standard:
1.1 This specification covers two classes of uncoated, high-
C 304 StandardforDesignofPrestressedConcreteCylinder
strength, hard-drawn steel wire for use in the manufacture of
3
Pipe
prestressed concrete pipe. In application, the wire is helically
wrapped on the pipe maintaining tension by mechanical means
3. Ordering Information
not including drawing dies.
3.1 Orders for material to this specification should include
1.2 The values stated in inch-pound units are to be regarded
the following information:
as the standard. The values given in parentheses are provided
3.1.1 Quantity (weight),
for information only.
3.1.2 Name of material (hard-drawn steel wire for prestress-
1.3 Supplementary requirements describe hydrogen em-
ing concrete pipe),
brittlement resistance test acceptance criteria.
3.1.3 Wire diameter (see Table 1),
1.4 The following caveat pertains only to the test method
3.1.4 Class (see Table 1),
portions of this specification, 6.2.3 and 6.4.3: This standard
3.1.5 Packaging (see Section 11),
does not purport to address the safety concerns, if any,
3.1.6 ASTM designation and year of issue, and
associated with its use. It is the responsibility of the user of this
3.1.7 Special requirements, if any (see Supplementary Re-
standard to establish appropriate safety and health practices
quirements).
and determine the applicability of regulatory limitations prior
to use.
NOTE 1—A typical ordering description is as follows: 100 000-lb,
Hard-Drawn Steel Wire for Prestressing Concrete Pipe, 0.192 in. in
2. Referenced Documents
diameter, Class III, 1500-lb coils, to ASTM A648 – _______.
2
2.1 ASTM Standards:
4. Manufacture
A370 Test Methods and Definitions for Mechanical Testing
4.1 The steel shall be made by the open-hearth, basic-
of Steel Products
oxygen, or electric-furnace process.
A510 Specification for General Requirements for Wire
4.2 The steel shall be free of injurious piping and undue
Rods and Coarse Round Wire, Carbon Steel
segregation.
A700 PracticesforPackaging,Marking,andLoadingMeth-
4.3 The wire shall be cold drawn to produce the desired
ods for Steel Products for Shipment
mechanical properties. The wire manufacturer shall take de-
E328 Test Methods for Stress Relaxation for Materials and
pendable precautions during wire drawing to preclude detri-
mental strain aging of the wire.
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
NOTE 2—Allowing wire to remain at elevated temperatures, such as
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
400°F (204°C) for more than5sor 360°F (182°C) for more than 20 s, can
A01.05 on Steel Reinforcement.
result in detrimental strain aging of the wire. Detrimentally strain aged
Current edition approved Sept. 1, 2004. Published September 2004. Originally
approved in 1972. Last previous edition approved in 2004 as A648 – 04. DOI: wire typically has reduced ductility and increased susceptibility to
10.1520/A0648-04A.
hydrogen embrittlement.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on Available from American National Standards Institute, 25 W. 43rd St., 4th
the ASTM website. Floor, New York, NY 10036.
*ASummary 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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A648 – 04a
TABLE 1 Tensile Requirements
Class II Wire Class III Wire
Wire Gage or Decimal Size,
Minimum Tensile Breaking Strength, lbf (kN) Minimum Tensile Breaking Strength, lbf (kN)
Fraction, in. in. (mm) A A
Strength, Strength,
min max min max
ksi (MPa) ksi (MPa)
6 0.192 (4.88) 222 (1530) 6 430 (28.6) 7 300 (32.5) 252 (1740) 7 300 (32.5) 8 170 (36.3)
1 4 0.250 (6.35) 211 (1450) 10 360 (46.1) 11 830 (52.6) 240 (1650) 11 780 (52.4) 13 250 (58.9)
/
5 16 0.312 (7.92) 201 (1390) 15 370 (68.4) 17 660 (78.6) 221 (1520) 16 900 (75.2) 19 190 (85.4)
/
A
Based on nominal wire diameter.
4.4 There shall be no welds or joints in the finished wire. shall be a minimum of 35 % for 0.192 in. (4.88 mm) wire and
Any welds or joints made during manufa
...