ASTM A886/A886M-10

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 seven-wire uncoated, indented, stress-relieved steel strand for use in pretensioned prestressed concrete construction. Grade 250I and Grade 270I have minimum ultimate strengths of 250 ksi [1725 MPa] and 270 ksi [1860 MPa], respectively, based on the nominal area of the strand.
1.2 Supplement I describes low-relaxation strand and relaxation testing for that product. Low-relaxation strand shall be furnished when specifically ordered and furnished in place of stress-relieved strand if mutually agreed to by the purchaser and supplier.
1.3 This specification is applicable for orders in either inch-pound units (as Specification A886) or in SI units (as Specification A886M).
1.4 The values stated in either inch-pound units or SI units are to be regarded separately as standards. Within the text, the inch-pound 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.

General Information

• Status: Historical
• Publication Date: 31-Mar-2010
• 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 A886/A886M-05 - Standard Specification for Steel Strand, Indented, Seven-Wire Stress-Relieved for Prestressed Concrete
• Effective Date: 01-Apr-2010
• Replaced By: ASTM A886/A886M-12 - Standard Specification for Steel Strand, Indented, Seven-Wire Stress-Relieved for Prestressed Concrete
• Effective Date: 15-Nov-2012

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:A886/A886M −10
StandardSpecification 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* MIL-STD-163SteelMillProductsPreparationforShipment
3
and Storage
1.1 Thisspecificationcoversseven-wireuncoated,indented,
2.3 U.S. Federal Standards:
stress-relieved steel strand for use in pretensioned prestressed
3
Fed. Std. No. 123Marking for Shipments (CivilAgencies)
concrete construction. Grade 250I and Grade 270I have mini-
mum ultimate strengths of 250 ksi [1725 MPa] and 270 ksi
3. Terminology
[1860 MPa], respectively, based on the nominal area of the
3.1 Definitions of Terms Specific to This Standard:
strand.
3.1.1 strand, n—all strand shall be of the seven-wire type
1.2 Supplement I describes low-relaxation strand and relax-
having a center wire enclosed tightly by six helically placed
ation testing for that product. Low-relaxation strand shall be
outerwireswithuniformpitchofnotlessthan12andnotmore
furnished when specifically ordered and furnished in place of
than 16 times the nominal diameter of the strand.
stress-relieved strand if mutually agreed to by the purchaser
4. Ordering Information
and supplier.
4.1 It shall be the responsibility of the purchaser to specify
1.3 This specification is applicable for orders in either
all requirements that are necessary for material ordered to this
inch-pound units (as Specification A886) or in SI units (as
specification. Such requirements shall include, but are not
Specification A886M).
limited to, the following:
1.4 The values stated in either inch-pound units or SI units
4.1.1 Quantity (metres [feet]),
are to be regarded separately as standards. Within the text, the
4.1.2 Diameter of strand (millimetres [inches]),
inch-pound units are shown in brackets. The values stated in
4.1.3 Grade of strand,
each system are not exact equivalents; therefore, each system
4.1.4 Packaging,
must be used independently of the other. Combining values
4.1.5 ASTM designation and year of issue, and
from the two systems may result in nonconformance with the
4.1.6 Special requirements, if any.
specification.
NOTE1—Atypicalorderingdescriptionisasfollows:25600m(84000
ft) 12.70-mm (0.5-in.), Grade 1860I (2701) strand, in 3658-m (12 000-ft)
2. Referenced Documents
spoolless packs to ASTM A886/A886M—_______.
2
2.1 ASTM Standards:
5. Materials and Manufacture
A1061/A1061MTest Methods for Testing Multi-Wire Steel
Strand
5.1 Base Metal—The base metal shall be carbon steel of
2.2 U.S. Military Standards: such quality that when it is drawn to wire, subjected to the
3
MIL-STD-129Marking for Shipment and Storage
indentation process, fabricated into strand, and then stress-
relieved, it shall have the properties and characteristics pre-
scribed in this specification.
1
This specification is under the jurisdiction ofASTM Committee A01 on Steel,
5.2 Wire—Thewirefromwhichthestrandistobefabricated
Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee
A01.05 on Steel Reinforcement. shall have a common dry-drawn finish.
Current edition approved April 1, 2010. Published July 2010. Originally
NOTE2—Thisproductisacompositeofsevenwiresandisproducedto
approved in 1988. Last previous edition approved in 2005 as A886/A886M–05.
mechanical properties only, the chemical composition of all wires or any
DOI: 10.1520/A0886_A0886M-10.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or individual wire is not pertinent to this application, and heat identity is not
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM necessarily maintained. It is possible that wire from more than one heat
Standards volume information, refer to the standard’s Document Summary page on
may be used in the manufacture of a reel or pack.Traceability is based on
the ASTM website.
pack identity as maintained and reported by the manufacturer.
3
AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,
5.3 Indentations—The outer wires shall have indentations
732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
www.access.gpo.gov. designed to reduce longitudinal movement of the strand within
*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−10
TABLE 1 Nominal Dimensions of Indentations
Wire Diameter, d S
...

This document is not anASTM standard and is intended only to provide the user of anASTM 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–05 Designation: A886/A886M – 10
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*
1.1 This specification covers seven-wire uncoated, indented, stress-relieved steel strand for use in pretensioned prestressed
concrete construction. Grade 250I and Grade 270I have minimum ultimate strengths of 250 ksi [1725 MPa] and 270 ksi [1860
MPa], respectively, based on the nominal area of the strand.
1.2 Supplement I describes low-relaxation strand and relaxation testing for that product. Low-relaxation strand shall be
furnished when specifically ordered and furnished in place of stress-relieved strand if mutually agreed to by the purchaser and
supplier.
1.3 This specification is applicable for orders in either inch-pound units (as SpecificationA886) or in SI units (as Specification
A886M).
1.4 The values stated in either inch-pound units or SI units are to be regarded separately as standards. Within the text, the
inch-pound 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.
2. Referenced Documents
2
2.1 ASTM Standards:
A370Test Methods and Definitions for Mechanical Testing of Steel Products
E328Test Methods for Stress Relaxation for Materials and Structures
1
ThisspecificationisunderthejurisdictionofASTMCommitteeA01onSteel,StainlessSteelandRelatedAlloysandisthedirectresponsibilityofSubcommitteeA01.05
on Steel Reinforcement.
Current edition approved Sept.April 1, 2005.2010. Published October 2005.July 2010. Originally approved in 1988. Last previous edition approved in 20022005 as
A886/A886M–025. DOI: 10.1520/A0886_A0886M-105.
2
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,[e-mail] Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*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 – 10
1061/A1061M Test Methods for Testing Multi-Wire Steel Strand
2.2 U.S. Military Standards:
3
MIL-STD-129 Marking for Shipment and Storage
3
MIL-STD-163 Steel Mill Products Preparation for Shipment and Storage
2.3 U.S. Federal Standards:
3
Fed. Std. No. 123 Marking for Shipments (Civil Agencies)
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 strand, n—all strand shall be of the seven-wire type 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.
4. Ordering Information
4.1It4.1 It shall be the responsibility of the purchaser to specify all requirements that are necessary for material ordered to this
specification. Such requirements shall include, but are not limited to, the following:
4.1.1 Quantity (meters(metres [feet]),
4.1.2 Diameter of strand (millimeteres [inches]),
4.1.3 Grade of strand,
4.1.4 Packaging,
4.1.5 ASTM designation and year of issue, and
4.1.6 Special requirements, if any.
NOTE 1—A typical ordering description is as follows: 25 600 m (84 000 ft) 12.70-mm (0.5-in.), Grade 1860I (2701) strand, in 3658-m (12 000-ft)
spoolless packs to ASTM A886/A886M—_______.
5. Materials and Manufacture
5.1 Base Metal—Thebasemetalshallbecarbonsteelofsuchqualitythatwhenitisdrawntowire,subjectedtotheindentation
process, fabricated into strand, and then stress-relieved, it shall have the properties and characteristics prescribed in this
specification.
5.2 Wire—The wire from which the strand is to be fabricated shall have a common dry-drawn finish.
NOTE 2—This product is a composite of seven wires and is produced to mechanical properties only, the chemical composition of all wires or any
individual wire is not pertinent to this application, and heat identity is not necessarily maintained. It is possible that wire from more than
...