ASTM A491-96

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: A 491 – 96
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Specification for
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Aluminum-Coated Steel Chain-Link Fence Fabric
This standard is issued under the fixed designation A 491; 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 obtained by interlocking adjacent pairs of wire ends and then
bending the wire ends back into a loop. The loop shall be
1.1 This specification covers aluminum-coated steel chain-
closed or nearly closed to a measurement less than the diameter
link fence fabric, aluminum-coated before weaving.
of the wire.
1.2 The values stated in inch-pound units are to be regarded
3.1.4 twisting—a term used to describe the type of selvage
as the standard. The values given in parentheses are for
obtained by twisting adjacent pairs of wire ends together in a
information only.
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close helix of 1 ⁄2 machine turns, which is equivalent to 3 full
2. Referenced Documents
twists, and cutting the wire ends at an angle. The wire ends
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beyond the twist shall be at least ⁄4 in. (6.4 mm) long. This
2.1 ASTM Standards:
type of selvage is not used on fabric with a mesh size of less
A 370 Test Methods and Definitions for Mechanical Test-
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than 2 in. (50.8 mm).
ing of Steel Products
A 700 Practices for Packaging, Marking, and Loading
4. Ordering Information
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Methods for Steel Products for Domestic Shipment
4.1 Orders for chain-link fence fabric purchased to this
A 817 Specification for Metallic-Coated Steel Wire for
4 specification shall include the following information:
Chain Link Fence Fabric
4.1.1 Quantity (Section 14),
2.2 Federal Standard:
5 4.1.2 Size of mesh (Section 7),
Fed. Std. No. 123 Marking for Shipment, Civil Agencies
4.1.3 Size of wire (Section 8),
2.3 Military Standards:
5 4.1.4 Height of fabric (Section 9),
MIL-STD-129 Marking for Shipment and Storage
4.1.5 Diamond count, if specified (Section 6),
MIL-STD-163 Steel Mill Products, Preparation for Ship-
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4.1.6 Type of selvage (Section 10),
ment and Storage
4.1.7 Certification if required (Section 17), and
3. Terminology 4.1.8 ASTM designation and year of issue.
4.2 All rolls of fencing accepted by the purchaser shall be
3.1 Definitions of Terms Specific to This Standard:
billed on the basis of the original footage of the rolls before
3.1.1 chain link fence fabric—a fencing material made from
sampling, unless changed by contractual arrangement.
steel wire helically wound and interwoven in such a manner as
to provide a continuous mesh without knots or ties except in
NOTE 1—A typical ordering description is as follows: 25 rolls, 50 ft
the form of knuckling or of twisting the ends of the wires to
each, chain-link fence fabric, aluminum-coated, 2 in. mesh. 0.148 in. wire,
form the selvage of the fabric. 60 in. high, knuckled both selvages, to ASTM A 491–XX.
3.1.2 diamond count—the number of diamond openings
5. Materials
from one edge of the fabric to the other. The diamond count of
5.1 The wire from which the fabric is woven shall conform
a given fabric shall begin at the first completed diamond at one
to all requirements of Specification A 817 for Type I coating.
edge and continue to the unfinished (½) or full opening at the
other edge.
6. Weave
3.1.3 knuckling—a term used to describe the type of selvage
6.1 The wire shall be woven throughout in the form of
approximately uniform square mesh, having parallel sides and
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This specification is under the jurisdiction of ASTM Committee F-14 on Fences
horizontal and vertical diagonals of approximately uniform
and is the direct responsibility of Subcommittee F14.40 on Chain Link Fabric and
Wire Accessories. dimensions. The top and bottom of the fabric shall be knuckled
Current edition approved July 10, 1996. Published September 1996. Originally
or twisted as specified in Section 10.
published as A 491 – 63 T. Last previous edition A 491 – 94.
6.2 Typical diamond count for each standard height is
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Annual Book of ASTM Standards, Vol 01.03.
3
shown in Table 1. Other diamond counts are permissible
Annual Book of ASTM Standards, Vol 01.05.
4
Annual Book of ASTM Standards, Vol 01.06.
provided that they are consistent within a lot. The purchaser
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Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700
has the option to specify the diamond count (4.1.5).
Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
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NOTICE:¬This¬standard¬has¬either¬been¬superceded¬and¬replaced¬by¬a¬new¬version¬or¬disc
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