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ASTM A886.pdf
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ASTM A886.pdf
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Designation: A 886/A 886M – 05
Standard Specification for
Steel Strand, Indented, Seven-Wire Stress-Relieved for
Prestressed Concrete
1
This standard is issued under the fixed designation A 886/A 886M; 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*
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 mini-
mum 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 relax-
ation 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 A 886) or in SI units (as
Specification A 886M).
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
2.1 ASTM Standards:
2
A 370 Test Methods and Definitions for Mechanical Testing
of Steel Products
E 328 Methods for Stress Relaxation Tests for Materials and
Structures
2.2 U.S. Military Standards:
MIL-STD-129 Marking for Shipment and Storage
3
MIL-STD-163 Steel Mill Products Preparation for Ship-
ment and Storage
3
2.3 U.S. Federal Standards:
Fed. Std. No. 123 Marking for Shipments (Civil Agencies)
3
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
4.1 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 [feet]),
4.1.2 Diameter of strand (millimeters [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 A 886/A 886M—_______.
5. Materials and Manufacture
5.1 Base Metal—The base metal shall be carbon steel of
such quality that when it is drawn to wire, subjected to the
indentation process, fabricated into strand, and then stress-
relieved, it shall have the properties and characteristics pre-
scribed in this specification.
5.2 Wire—The wire from which the strand is to be fabri-
cated 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 one heat
may be used in the manufacture of a reel or pack. Traceability is based on
pack identity as maintained and reported by the manufacturer.
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 Sept. 1, 2005. Published October 2005. Originally
approved in 1988. Last previous edition approved in 2002 as A 886/A 886M – 02.
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 Standardization Documents Order Desk, Bldg. 4 Section D, 700
Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
1
*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.
Copyright ASTM International
Reproduced by IHS under license with ASTM
Not for Resale
No reproduction or networking permitted without license from IHS
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