ASTM A886/A886M-17
(Specification)Standard Specification for Steel Strand, Indented, Seven-Wire Stress-Relieved for Prestressed Concrete
Standard Specification for Steel Strand, Indented, Seven-Wire Stress-Relieved for Prestressed Concrete
ABSTRACT
This specification covers seven-wire uncoated, indented, stress-relieved carbon steel strands for use in pre-stressed concrete construction. Wire dimensions, indentations, and mechanical properties shall be in accordance to the values specified in this specification. The carbon steel strand is produced to satisfy only the specified mechanical properties, this specification contains no information on the chemical composition of the wires.
SCOPE
1.1 This specification covers two types and two grades of indented seven-wire uncoated, steel strand for use in prestressed concrete construction. The two types of strand are low-relaxation and stress-relieved (normal-relaxation). Grade 250I [1725I] and Grade 270I [1860I] have minimum tensile strengths of 250 ksi [1725 MPa] and 270 ksi [1860 MPa], respectively, based on the nominal area of the strand.
1.2 This specification is applicable for orders in either inch-pound units (as Specification A886) or in SI units (as Specification A886M).
1.3 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 are not 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.
1.4 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.
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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.
Designation:A886/A886M −17
Standard Specification for
Steel Strand, Indented, Seven-Wire Stress-Relieved for
1
Prestressed Concrete
This standard is issued under the fixed designationA886/A886M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 2.2 U.S. Military Standard:
3
MIL-STD-129Marking for Shipment and Storage
1.1 This specification covers two types and two grades of
2.3 U.S. Federal Standard:
indented seven-wire uncoated, steel strand for use in pre-
3
Fed. Std. No. 123Marking for Shipments (CivilAgencies)
stressed concrete construction. The two types of strand are
low-relaxation and stress-relieved (normal-relaxation). Grade
3. Terminology
250I [1725I] and Grade 270I [1860I] have minimum tensile
3.1 Definition of Term Specific to this Specification:
strengths of 250 ksi [1725 MPa] and 270 ksi [1860 MPa],
3.1.1 strand, n—a group of wires having a center wire
respectively, based on the nominal area of the strand.
enclosed tightly by six helically placed outer wires with
uniform pitch of not less than 12 and not more than 16 times
1.2 This specification is applicable for orders in either
the nominal diameter of the strand.
inch-pound units (as Specification A886) or in SI units (as
3.1.1.1 Discussion—The direction of lay is either right-
Specification A886M).
handed or left-handed.
1.3 The values stated in either inch-pound units or SI units
4. Ordering Information
are to be regarded separately as standard. Within the text, the
SI units are shown in brackets. The values stated in each
4.1 Orders for indented seven-wire steel strand under this
system are not exact equivalents; therefore, each system shall
specification shall contain the following information:
beusedindependentlyoftheother.Combiningvaluesfromthe
4.1.1 Quantity (feet [metres]),
two systems may result in non-conformance with the specifi-
4.1.2 Nominal diameter of strand (inches [millimetres]),
cation.
4.1.3 Grade of strand,
4.1.4 Type of strand (low-relaxation or stress-relieved
1.4 This international standard was developed in accor-
(normal-relaxation)), and
dance with internationally recognized principles on standard-
4.1.5 ASTM designationA886 [A886M] and year of issue.
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom- 4.2 Thepurchasershallhavetheoptiontospecifyadditional
requirements, including but not limited to, the following:
mendations issued by the World Trade Organization Technical
4.2.1 Relaxation evidence from similarly dimensioned
Barriers to Trade (TBT) Committee.
strand of the same grade (6.5.1),
4.2.2 Other types of indented wire (7.4.2),
2. Referenced Documents
4.2.3 If joints or splices are permitted (8.1.1),
2
2.1 ASTM Standard:
4.2.4 Weldless, if desired (8.1.4),
A1061/A1061MTest Methods for Testing Multi-Wire Steel
4.2.5 Requirements for inspection (11.1),
Prestressing Strand
4.2.6 Load-elongation curve, if desired (13.2),
4.2.7 Packaging and package marking (Section 14), and
4.2.8 Other special requirements, if any.
1
This specification is under the jurisdiction ofASTM Committee A01 on Steel,
5. Materials and Manufacture
Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee
A01.05 on Steel Reinforcement.
5.1 Base Metal—The base metal shall be carbon steel of
Current edition approved Nov. 1, 2017. Published November 2017. Originally
such quality that when it is drawn to wire, subjected to the
approved in 1988. Last previous edition approved in 2016 as A886/A886M–16.
DOI: 10.1520/A0886_A0886M-17.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from U.S. Government Printing Office, Superintendent of
Standards volume information, refer to the standard’s Document Summary page on Documents, 732 N. Capitol St., NW, Washington, DC 20401-0001, http://
the ASTM website. www.access.gpo.gov.
*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
1
---------------------- Page: 1 ----------------------
A886/A886M−17
TABLE 1 Nominal Dimensions of Indentations
Wire Diameter, d Nominal Diameter Depth, a Length, L Pitch, P
of Strand
Fig.
in. [mm] in. [mm] in. [mm] in. [mm] in. [mm]
1(a) # 0.104 [# 2.6] 0.312 [7.9] 0.002 to 0.004 [0.05 to 0.10]
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: A886/A886M − 16 A886/A886M − 17
Standard Specification for
Steel Strand, Indented, Seven-Wire Stress-Relieved for
1
Prestressed Concrete
This standard is issued under the fixed designation A886/A886M; 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*
1.1 This specification covers two types and two grades of indented seven-wire uncoated, steel strand for use in prestressed
concrete construction. The two types of strand are low-relaxation and stress-relieved (normal-relaxation). Grade 250I [1725I] and
Grade 270I [1860I] have minimum tensile strengths of 250 ksi [1725 MPa] and 270 ksi [1860 MPa], respectively, based on the
nominal area of the strand.
1.2 This specification is applicable for orders in either inch-pound units (as Specification A886) or in SI units (as Specification
A886M).
1.3 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 are not 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.
1.4 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.
2. Referenced Documents
2
2.1 ASTM Standard:
A1061/A1061M Test Methods for Testing Multi-Wire Steel Prestressing Strand
2.2 U.S. Military Standard:
3
MIL-STD-129 Marking for Shipment and Storage
2.3 U.S. Federal Standard:
3
Fed. Std. No. 123 Marking for Shipments (Civil Agencies)
3. Terminology
3.1 Definition of Term Specific to this Specification:
3.1.1 strand, n—a group of wires having a center wire enclosed tightly by six helically placed outer wires with uniform pitch
of not less than 12 and not more than 16 times the nominal diameter of the strand.
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.05
on Steel Reinforcement.
Current edition approved Dec. 1, 2016Nov. 1, 2017. Published January 2017November 2017. Originally approved in 1988. Last previous edition approved in 20122016
as A886/A886M – 12.A886/A886M – 16. DOI: 10.1520/A0886_A0886M-16. 10.1520/A0886_A0886M-17.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from U.S. Government Printing Office, Superintendent of Documents, 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401,20401-0001,
http://www.access.gpo.gov.
3.1.1.1 Discussion—
The direction of lay is either right-handed or left-handed.
4. Ordering Information
4.1 Orders for indented seven-wire steel strand under this specification shall contain the following information:
4.1.1 Quantity (feet [metres]),
*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
1
---------------------- Page: 1 ----------------------
A886/A886M − 17
TABLE 1 Nominal Dimensions of Indentations
Wire Diameter, d Nominal Diameter Depth, a Length, L Pitch, P
of Strand
Fig.
in. [mm] in. [mm] in. [mm] in. [mm] in. [mm]
1 (a) # 0.104 [# 2.6] 0.312 [7.9] 0.002 to 0.004 [0.05 to 0.10] 0.079 [2.0] 0.220 [5.6]
1 (a) > 0.125 [> 3.2] 0.375 [9.5] 0.002 to 0.005 [0.05 to 0.13] 0.108 [2.7] 0.220 [5.6]
0.438 [11.1]
0.500 [12.7]
1 (b) # 0.125 [# 3.2 ] 0.375 [9.5] 0.002 to 0.006 [0.05 to 0.15] 0.115 [2.9] 0.220 [5.6]
4.1.2 Nominal diameter of strand (inches [millimetres]),
4.1.3 Grade of strand,
4.1.4 Type of strand (low-relaxation or stress-relieved (normal-relaxation)), and
4.1.5 ASTM designation A886 [A886M] and year of issue.
4.2 It The purchaser shall be the responsibility of the purchaser to specify all requirements that are necessary for material
ordered under this specification. Such requirements to be conside
...
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: A886/A886M − 17
Standard Specification for
Steel Strand, Indented, Seven-Wire Stress-Relieved for
1
Prestressed Concrete
This standard is issued under the fixed designation A886/A886M; 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* 2.2 U.S. Military Standard:
3
MIL-STD-129 Marking for Shipment and Storage
1.1 This specification covers two types and two grades of
2.3 U.S. Federal Standard:
indented seven-wire uncoated, steel strand for use in pre-
3
Fed. Std. No. 123 Marking for Shipments (Civil Agencies)
stressed concrete construction. The two types of strand are
low-relaxation and stress-relieved (normal-relaxation). Grade
3. Terminology
250I [1725I] and Grade 270I [1860I] have minimum tensile
3.1 Definition of Term Specific to this Specification:
strengths of 250 ksi [1725 MPa] and 270 ksi [1860 MPa],
3.1.1 strand, n—a group of wires having a center wire
respectively, based on the nominal area of the strand.
enclosed tightly by six helically placed outer wires with
uniform pitch of not less than 12 and not more than 16 times
1.2 This specification is applicable for orders in either
the nominal diameter of the strand.
inch-pound units (as Specification A886) or in SI units (as
3.1.1.1 Discussion—The direction of lay is either right-
Specification A886M).
handed or left-handed.
1.3 The values stated in either inch-pound units or SI units
are to be regarded separately as standard. Within the text, the 4. Ordering Information
SI units are shown in brackets. The values stated in each
4.1 Orders for indented seven-wire steel strand under this
system are not exact equivalents; therefore, each system shall
specification shall contain the following information:
be used independently of the other. Combining values from the
4.1.1 Quantity (feet [metres]),
two systems may result in non-conformance with the specifi-
4.1.2 Nominal diameter of strand (inches [millimetres]),
cation.
4.1.3 Grade of strand,
4.1.4 Type of strand (low-relaxation or stress-relieved
1.4 This international standard was developed in accor-
(normal-relaxation)), and
dance with internationally recognized principles on standard-
4.1.5 ASTM designation A886 [A886M] and year of issue.
ization established in the Decision on Principles for the
4.2 The purchaser shall have the option to specify additional
Development of International Standards, Guides and Recom-
requirements, including but not limited to, the following:
mendations issued by the World Trade Organization Technical
4.2.1 Relaxation evidence from similarly dimensioned
Barriers to Trade (TBT) Committee.
strand of the same grade (6.5.1),
4.2.2 Other types of indented wire (7.4.2),
2. Referenced Documents
4.2.3 If joints or splices are permitted (8.1.1),
2
2.1 ASTM Standard:
4.2.4 Weldless, if desired (8.1.4),
A1061/A1061M Test Methods for Testing Multi-Wire Steel
4.2.5 Requirements for inspection (11.1),
Prestressing Strand
4.2.6 Load-elongation curve, if desired (13.2),
4.2.7 Packaging and package marking (Section 14), and
4.2.8 Other special requirements, if any.
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
5. Materials and Manufacture
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.05 on Steel Reinforcement.
5.1 Base Metal—The base metal shall be carbon steel of
Current edition approved Nov. 1, 2017. Published November 2017. Originally
such quality that when it is drawn to wire, subjected to the
approved in 1988. Last previous edition approved in 2016 as A886/A886M – 16.
DOI: 10.1520/A0886_A0886M-17.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from U.S. Government Printing Office, Superintendent of
Standards volume information, refer to the standard’s Document Summary page on Documents, 732 N. Capitol St., NW, Washington, DC 20401-0001, http://
the ASTM website. www.access.gpo.gov.
*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
1
---------------------- Page: 1 ----------------------
A886/A886M − 17
TABLE 1 Nominal Dimensions of Indentations
Wire Diameter, d Nominal Diameter Depth, a Length, L Pitch, P
of Strand
Fig.
in. [mm] in. [mm] in. [mm] in. [mm] in. [mm]
1 (a) # 0.104 [# 2.6] 0.312 [7.9] 0.002 to 0.004 [0.05 to 0.10] 0.079 [2.0] 0.220 [5.6]
1 (a) > 0.125 [> 3.2] 0.375 [9.5] 0.002 to 0.005 [0.05 to 0.13] 0.108 [2.7] 0.220 [5.6]
...
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