iTeh StandardsiTeh Standards
EURUSD
Your shopping cart is empty.
ASTM

ASTM A882/A882M-01

(Specification)

Standard Specification for Epoxy-Coated Seven-Wire Prestressing Steel Strand

Standard Specification for Epoxy-Coated Seven-Wire Prestressing Steel Strand

SCOPE
1.1 This specification covers ASTM Specification A 416 low-relaxation Grade 250 and Grade 270 seven-wire prestressing steel strand with protective fusion-bonded epoxy coating applied by the electrostatic deposition method or other method that will meet the coating requirements in Section 7.
Note 1—The manufacturer as identified throughout this specification is the coating applicator.
1.2 Supplementary Requirements S1 contains requirements for epoxy-coated and filled strand. Epoxy-coated and filled strand shall not be furnished unless ordered, or by arrangement between purchaser and manufacturer.
Note 2—This standard is a product specification and it does not delineate requirements regarding the use of epoxy-coated strand. Proper use of epoxy-coated strand includes design considerations, handling, installing, and stressing of strands, permissible concrete curing temperature, and procedures for repairing damaged coating and protection of the ends of strands. Information and procedures for such items are presented in a report by the PCI Ad Hoc Committee on Epoxy-Coated Strand.
1.3 This specification is applicable for orders in either inch-pound units (as Specification A 882) or SI units [as Specification A 882M].
1.4 The values stated in either inch-pound or SI units are to be regarded as standard. Within the test, the SI units are shown in brackets. The values stated in each system must be used independently of the other. Combining values from the two systems may result in nonconformance with this specification.

General Information

Status
Historical
Publication Date
09-Sep-2001
ICS
77.140.65 - Steel wire, wire ropes and link chains
Technical Committee
A01 - Steel, Stainless Steel and Related Alloys
Drafting Committee
A01.05 - Steel Reinforcement
Current Stage
Ref Project

Relations

Replaced By
ASTM A882/A882M-02a - Standard Specification for Filled Epoxy-Coated Seven-Wire Prestressing Steel Strand
Effective Date
10-Jun-2002

Buy Standard

ASTM A882/A882M-01 - Standard Specification for Epoxy-Coated Seven-Wire Prestressing Steel StrandASTM A882/A882M-01 - Standard Specification for Epoxy-Coated Seven-Wire Prestressing Steel Strand
PreviousNext
Technical specification
ASTM A882/A882M-01 - Standard Specification for Epoxy-Coated Seven-Wire Prestressing Steel Strand
English language
5 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (Sample)

Designation: A 882/A882M – 01
Standard Specification for
1
Epoxy-Coated Seven-Wire Prestressing Steel Strand
This standard is issued under the fixed designation A 882/A882M; 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 D 968 Test Methods for Abrasion Resistance of Organic
6
Coatings by Falling Abrasive
1.1 This specification covers ASTM Specification A 416
G 14 Test Method for Impact Resistance of Pipeline Coat-
low-relaxation Grade 250 and Grade 270 seven-wire prestress-
7
ings (Falling Weight Test)
ing steel strand with protective fusion-bonded epoxy coating
G 20 Test Method for Chemical Resistance of Pipeline
applied by the electrostatic deposition method or other method
7
Coatings
that will meet the coating requirements in Section 7.
2.2 Federal Highway Administration Report:
NOTE 1—The manufacturer as identified throughout this specification is
FHWA-RD-74-18 Nonmetallic Coatings for Concrete Rein-
the coating applicator.
8
forcing Bars (February 1974)
1.2 Supplementary Requirements S1 contains requirements
3. Ordering Information
for epoxy-coated and filled strand. Epoxy-coated and filled
strand shall not be furnished unless ordered, or by arrangement
3.1 The purchaser should specify:
between purchaser and manufacturer.
3.1.1 Diameter, grade, and type of uncoated strand in
accordance with Specification A 416/A 416M (latest edition).
NOTE 2—This standard is a product specification and it does not
3.1.2 Smooth or grit impregnated coating (see 6.3).
delineate requirements regarding the use of epoxy-coated strand. Proper
3.1.3 Quantity (in feet [metres]).
use of epoxy-coated strand includes design considerations, handling,
installing, and stressing of strands, permissible concrete curing tempera-
3.1.4 Requirements for certification (see Section A1.2.3).
ture, and procedures for repairing damaged coating and protection of the
3.1.5 Requirements for material samples (see 4.3).
ends of strands. Information and procedures for such items are presented
3.1.6 Requirements for patching material (see 4.4).
2
in a report by the PCI Ad Hoc Committee on Epoxy-Coated Strand.
NOTE 3—A typical ordering description for epoxy-coated strand is as
1.3 This specification is applicable for orders in either
follows: 84 000 feet [2560 m] of grit-impregnated epoxy-coated strand,
inch-pound units (as Specification A 882) or SI units [as
1
⁄2-in. [12.7-mm] diameter, Grade 270 K low-relaxation on wooden reels
Specification A 882M].
to ASTM Specification A 882 – [A 882M – ].
1.4 The values stated in either inch-pound or SI units are to
4. Materials
be regarded as standard. Within the test, the SI units are shown
in brackets. The values stated in each system must be used
4.1 Prestressing steel strand to be coated shall meet the
independently of the other. Combining values from the two
requirements of Specification A 416/A 416M as specified by
systems may result in nonconformance with this specification.
the purchaser and shall be free of contaminants such as oil,
grease, or paint.
2. Referenced Documents
4.1.1 Epoxy-coated strand shall have relaxation losses of
2.1 ASTM Standards:
not more than 4 % when initially loaded to 70 % of specified
A 370 Test Methods and Definitions for Mechanical Testing
minimum breaking strength of the strand after 1000 h when
3
of Steel Products
tested under conditions of Specification A 416/A 416M.
A 416/A 416M Specification for Steel Strand, Uncoated
4.2 The coating material shall meet the requirements listed
4
Seven-Wire for Prestressed Concrete
in Annex A1 of this specification. The coating material shall be
5
B 117 Practice for Operating Salt Spray (Fog) Apparatus
of organic composition except for the pigment, or grit if
applicable, which may be inorganic if used.
4.2.1 If specified in the order, a written certification shall be
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
furnished to the purchaser that properly identifies the number
Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee
of each batch of coating material used in the order, material,
A01.05 on Steel Reinforcement.
quantity represented, date of manufacture, name and address of
Current edition approved Sept. 10, 2001. Published Oct. 2001. Originally
e1
published as A 882/A 882M – 91. Last previous edition A 882/A 882M – 96 .
2
“Guidelines for the Use of Epoxy-Coated Strand,” PCI Journal, Precast/
6
Prestressed Concrete Institute, Vol. 38, No. 4, July-August 1993, pp. 26–32. Annual Book of ASTM Standards, Vol 06.01.
3 7
Annual Book of ASTM Standards, Vol 01.03. Annual Book of ASTM Standards, Vol 06.02.
4 8
Annual Book of ASTM Standards, Vol 01.04. Available from the National Technical Information Service, 5285 Port Royal
5
Annual Book of
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

This May Also Interest You

ASTM
ASTM A493-23(Specification)
Standard Specification for Stainless Steel Wire and Wire Rods for Cold Heading and Cold Forging

ABSTRACT
This specification covers cold-finished and hot-finished stainless steel wire and wire rods for cold heading or cold forging for applications, such as fasteners, where corrosion resistance is a factor. The steel shall conform to the required chemical composition requirements. The material shall also conform to the requirements as to mechanical properties. All austenitic grades in the annealed condition or annealed and lightly drafted condition shall be capable of passing the criteria set by this specification.
SCOPE
1.1 This specification covers cold-finished and hot-finished stainless steel wire and wire rods for cold heading or cold forging for applications, such as fasteners, where corrosion resistance is a factor.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Technical specification
    4 pages
    English language
    sale 15% off
  • Technical specification
    4 pages
    English language
    sale 15% off
ASTM
ASTM A555/A555M-23(Specification)
Standard Specification for General Requirements for Stainless Steel Wire and Wire Rods

ABSTRACT
This specification covers general requirements that shall apply to stainless wire and wire rods. Wire is intended primarily for cold forming, including coiling, stranding, weaving, heading and machining as covered under the required specifications. The material may be furnished in one of the conditions detailed in the applicable material specification, that is, annealed, bright annealed, or cold worked. Intergranular corrosion test, grain size test, tension test, and chemical analysis shall conform to the chemical and mechanical requirements of the material specification.
SCOPE
1.1 This specification covers general requirements that shall apply to stainless wire and wire rods. Wire rods are a semifinished product intended primarily for the manufacture of wire. Wire is intended primarily for cold forming, including coiling, stranding, weaving, heading and machining as covered under the latest revision of each of the following ASTM specifications: A313/A313M, A368, A478, A492, A493, A580/A580M, and A581/A581M.  
1.2 In case of conflicting requirements, the individual material specification and this general requirement specification shall prevail in the order named.  
1.3 General requirements for flat products other than wire are covered in Specification A480/A480M.  
1.4 General requirements for bar and billet products are covered in Specification A484/A484M.  
1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
1.6 Unless the order specifies the applicable metric specification designation, the material shall be furnished in the inch-pound units.  
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Technical specification
    7 pages
    English language
    sale 15% off
  • Technical specification
    7 pages
    English language
    sale 15% off
ASTM
ASTM A981/A981M-23(Test Method)
Standard Test Method for Evaluating Bond Strength for 0.600-in. [15.24-mm] Diameter Seven-Wire Steel Strand, Grade 270 [1860], Used in Prestressed Ground Anchors

ABSTRACT
This test method deals with the standard procedures for establishing the relative bond strength of Grade 270 prestressing steel strands of specified diameter in cement grout as used in prestressed ground anchors for evaluating the effects of manufacturing practices on bond strength. The bond strength values obtained shall not be used to design the bond strength of ground anchors that depend on field conditions. This test method is not intended to be used as a bond test for pretensioned concrete applications. The test specimen shall be cut from standard production coils and shall not be wiped or cleaned. Pull test shall be made in accordance with the method.
SIGNIFICANCE AND USE
4.1 Seven-wire steel strand is used in pre-tensioned and post-tensioned concrete construction.  
4.2 0.600 in. [15.24 mm] diameter, Grade 270 seven-wire steel strand is used to make prestressed ground anchors which are often bonded to cement grout.  
4.3 Manufacturing processes, subsequent handling, and storage conditions may influence the strand bond.  
4.4 The primary use of this test method is to establish the relative bond strength of 0.600 in. [15.24 mm] seven-wire steel strand.  
4.5 The relative bond strength is determined by recording the pullout force at a certain displacement of the strand.
SCOPE
1.1 This test method describes procedures to establish the relative bond strength of 0.600 in. [15.24 mm] diameter, Grade 270 [1860] seven-wire steel strand in cement grout as used in prestressed ground anchors for the purpose of evaluating the effects of manufacturing practices on bond strength.  
1.2 The bond strength values obtained are not intended to be used to design the bond length of ground anchors that depend on field conditions.  
1.3 This test method is not intended to be used as a bond test for prestressed concrete applications.  
1.4 The values stated in either inch-pound or SI units are to be regarded as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    4 pages
    English language
    sale 15% off
  • Standard
    4 pages
    English language
    sale 15% off
ASTM
ASTM A580/A580M-23(Specification)
Standard Specification for Stainless Steel Wire

ABSTRACT
This specification covers stainless steel wire, except the free-machining types. It includes round, square, octagon, hexagon, and shape wire in coils only for the more commonly used types of stainless steels for general corrosion resistance and high-temperature service. The steel specimens shall undergo the following conditions: (1) annealed as a final heat treatment; (2) cold worked to higher strength; (3) heat treated to an intermediate temper; or (4) heat treated to a hard temper by austenitizing, quenching, and tempering at a relatively low temperature. The materials shall be cold drawn, annealed, and pickled. The steel wires shall conform to the required chemical compositions of carbon, manganese, phosphorus, sulfur, silicon, chromium, nickel, molybdenum, nitrogen, and other elements such as niobium , vanadium, copper, tantalum, titanium and cobalt. Mechanical test shall be performed wherein in the steel specimens shall conform to the required values of tensile strength, yield strength, and elongation. The martensitic grades shall conform to the required values of hardness after heat treatment.
SCOPE
1.1 This specification covers stainless steel wire, except the free-machining types. It includes round, square, octagon, hexagon, and shape wire in coils only for the more commonly used types of stainless steels for general corrosion resistance and high-temperature service. For bars in straightened and cut lengths, see Specifications A276 or A479/A479M.  
Note 1: For free-machining stainless wire, designed especially for optimum machinability, see Specification A581/A581M.  
1.2 Unless the order specifies the applicable “M” specification designation, the material shall be furnished to the inch-pound units.  
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Technical specification
    5 pages
    English language
    sale 15% off
  • Technical specification
    5 pages
    English language
    sale 15% off
ASTM
ASTM A581/A581M-22a(Specification)
Standard Specification for Free-Machining Stainless Steel Wire and Wire Rods

ABSTRACT
This specification covers the standard for cold-finished wire and hot-finished free-machining stainless steel wire and wire rods in coils. Chemical analysis shall be performed on the steel and shall conform to the chemical composition requirements in carbon, manganese, phosphorus, sulfur, silicon, chromium, nickel and other trace elements. The stainless steel shall undergo mechanical testing and conform to the tensile strength requirement.
SCOPE
1.1 This specification covers free-machining stainless steels of cold-finished wire and hot-finished wire rods in coils. Wire rods are a semi-finished product primarily for the manufacture of wire. Wire includes rounds, squares, hexagons, and special shapes in free-machining stainless steels designed especially for optimum machinability and for general corrosion and high-temperature service.  
1.2 The following alloys are covered:  
1.2.1 Austenitic alloys: UNS numbers S20300, S30300, S30310, S30323, and S30345;  
1.2.2 Martensitic alloys: UNS numbers S41600, S41610, and S41623; and  
1.2.3 Ferritic alloys: UNS numbers S18200, S18235, S41603, S43020, and S43023.
Note 1: For wire other than for free-machining applications, see Specification A580/A580M.
Note 2: For Free-Machining Stainless Steel Bars, see Specification A582/A582M.  
1.3 The values stated in either inch-pound units or SI (metric) units are to be regarded separately as standard; within the text and tables, the SI units are shown in [brackets]. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.  
1.4 Unless the order specifies the applicable “M” specification designation, the material shall be furnished to the inch-pound units.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Technical specification
    4 pages
    English language
    sale 15% off
  • Technical specification
    4 pages
    English language
    sale 15% off
ASTM
ASTM A1007-22(Specification)
Standard Specification for Carbon Steel Wire for Wire Rope

ABSTRACT
This specification covers uncoated and four classes of round, metallic coated, cold-drawn, carbon steel wire rope in five strength levels. The following materials testing procedures shall be conducted: standard tensile testing; alternate tensile testing; torsion testing; and wrap testing. The wire diameter tolerances of uncoated, drawn-galvanized or drawn-Zn5 Al-MM, and final-galvanized or final-coated Zn5 Al-MM rope wires shall be described. Minimum breakage forces for the carbon steel wire rope shall also be presented. During torsion testing, varying amounts of load shall be applied to the wire being tested.
SCOPE
1.1 This specification covers uncoated and metallic coated classes of round, cold-drawn, carbon steel wire for wire rope in five strength levels. This specification specifies:  
1.1.1 Dimensional tolerances,  
1.1.2 Mechanical characteristics,  
1.1.3 Chemical composition requirements,  
1.1.4 Coating requirements (if applicable), and  
1.1.5 Packaging requirements.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Technical specification
    8 pages
    English language
    sale 15% off
  • Technical specification
    8 pages
    English language
    sale 15% off
ASTM
ASTM A1096/A1096M-22(Test Method)
Standard Test Method for Evaluating Bond of Individual Steel Wire, Indented or Plain, for Concrete Reinforcement

SIGNIFICANCE AND USE
5.1 Steel wire for concrete reinforcement is used in various applications wherein the wire is expected to transfer passive or prestressing forces to the structural member via the bond of the exposed wire surfaces to the surrounding concrete.  
5.2 Wire manufacturing processes, subsequent handling, and storage conditions can influence the wire bond.  
5.3 Steel wire for concrete reinforcement is used in construction applications with a variety of concrete mixtures. Developing test methods and threshold values for the performance of the wire in each of these unique mixtures is impractical.
SCOPE
1.1 This test method describes procedures for evaluating bond of individual steel wire, indented or plain, for concrete reinforcement. The bond determined by this test method is stated as the tensile force needed to pull the wire through the cured mortar in a cylindrical steel casing.  
1.2 The result of the test is the maximum tensile force measured on the loaded end of the wire recorded at a free-end slip less than or equal to 0.10 in. [2.5 mm].  
1.3 Units—The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    7 pages
    English language
    sale 15% off
  • Standard
    7 pages
    English language
    sale 15% off
ASTM
ASTM A805/A805M-09(2021)(Specification)
Standard Specification for Steel, Flat Wire, Carbon, Cold-Rolled

ABSTRACT
This specification covers carbon steel flat wire in coils or cut lengths. The steel materials shall be produced from rimmed, capped, semi-killed, hot-rolled or cold-rolled steel. The steel specimens shall undergo cast or heat analysis and product analysis and shall conform to the required chemical compositions of carbon, manganese, phosphorus, sulfur, silicon, and copper. The desired edge shall be classified as follows: prepared edge of a specified contour produced when a very accurate width is required or when the finish of the edge suitable for electroplating is required, or both (Number 1 Edge); not applicable to flat wire products ( Number 2 Edge); approximately square edge produced by slitting (Number 3 Edge); rounded edge produced either by edge rolling or resulting from flat rolling of a round section (Number 4 Edge); square edge produced from slit-edge material on which the burr is eliminated by rolling or filling (Number 5 Edge); and square edge produced by edge rolling when the width tolerance and edge condition are not as exacting as for No. 1 Edge (Number 6 Edge). The dimensional tolerances shall conform to the required values of thickness, width and length. The steel materials shall conform to the required values of temper, Rockwell hardness and tensile strength.
SCOPE
1.1 This specification covers carbon steel flat wire in coils or cut lengths. Flat wire is classified as a cold-rolled section, rectangular in shape, 0.500 in. [12.7 mm] or less in width and under 0.250 in. [6.35 mm] in thickness.  
1.2 Low-carbon steel flat wire is produced from steel compositions with a maximum carbon content of 0.25 % by cast or heat analysis.  
1.3 Carbon spring steel flat wire is produced to a carbon range in which the specified or required maximum is over 0.25 % by cast or heat analysis.  
1.3.1 Two types of carbon spring steel flat wire are produced:
1.3.1.1 Untempered cold-rolled carbon spring steel flat wire, produced to several desirable combinations of properties and
1.3.1.2 Hardened and tempered carbon spring steel wire.  
1.4 Definite application flat wire is a product developed for a specific application and may be specified only by size and descriptive name.  
1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Technical specification
    13 pages
    English language
    sale 15% off
ASTM
ASTM A1023/A1023M-21(Specification)
Standard Specification for Carbon Steel Wire Ropes for General Purposes

ABSTRACT
This specification covers stranded steel wire ropes of various grades and constructions manufactured from uncoated or metallic coated wire and cord products manufactured from metallic coated wire. Dimensional characteristics include the diameter and lay length of the rope. Mechanical property requirements include: rope breaking force, spinning loss factor, and stretch; and wire torsions, tensile strength, tensile grade, and level. Cores of stranded ropes shall normally either be of steel or fiber composition. All wire ropes shall be lubricated and impregnated in the manufacturing process. Wire finish may be final-galvanized rope or drawn-galvanized (zinc coated) rope. Rope workmanship and finish; testing and compliance; acceptance tests; and packaging and identification are also detailed.
SCOPE
1.1 This specification covers the general requirements for the more common types of steel wire ropes. Included in this specification are wire ropes in various grades and constructions from 1/4 to 31/2 in. [6 to 89 mm] manufactured from uncoated or metallic coated wire. Also included are cord products from 1/32 to 3/8 in. [0.8 to 10 mm] manufactured from metallic coated wire. For specific applications, additional or alternative requirements may apply.  
1.2 The values stated in either inch-pounds or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.  
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Technical specification
    34 pages
    English language
    sale 15% off
  • Technical specification
    34 pages
    English language
    sale 15% off
ASTM
ASTM A421/A421M-21(Specification)
Standard Specification for Stress-Relieved Steel Wire for Prestressed Concrete

ABSTRACT
This specification covers two types of uncoated stress-relieved round high-carbon steel wire commonly used in prestressed linear concrete construction. These two types are the type BA used for applications in which cold-end deformation is used for anchoring purposes and type WA wire which is used for application in which the ends are anchored by wedges, no cold-end deformation of the wire is involved. Required tensile strength, yield strength, and elongation shall be evaluated using stress-relaxation test. Heat analysis shall be used to determine the percentage of specified elements especially sulfur and phosphorus to meet the required chemical composition.
SCOPE
1.1 This specification covers two types of stress-relieved round high-carbon steel wire used in prestressed 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 A supplementary requirement (S1) is provided for use where low-relaxation wire and relaxation testing for that product is required by the purchaser. The supplementary requirement applies only when specified in the purchase order or contract.  
1.3 This specification is applicable for orders in either inch-pounds units (as Specification A421) or in SI units (as Specification A421M).  
1.4 The values stated in either inch-pound or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the specification.  
1.5 The text of this specification references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables) shall not be considered as requirements of the specification.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Technical specification
    4 pages
    English language
    sale 15% off
  • Technical specification
    4 pages
    English language
    sale 15% off