ASTM A411.pdf
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Designation: A 411 – 03
Standard Specification for
Zinc-Coated (Galvanized) Low-Carbon Steel Armor Wire
1
This standard is issued under the fixed designation A 411; 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 zinc-coated low-carbon steel
wire for use in armoring for protection against damage of
submarine and underground cables used for communication,
control, or power purposes.
1.2 The values stated in inch-pound units are to be regarded
as the standard.
2. Referenced Documents
2.1 ASTM Standards:
2
A 90/A 90M Test Method for Weight [Mass] of Coating on
Iron and Steel Articles with Zinc or Zinc-Alloy Coatings
A 938 Test Method for Torsion Testing of Wire
B 6 Specification for Zinc (Slab Zinc)
E 8 Test Methods of Tension Testing of Metallic Materials
3. Ordering Information
3.1 It shall be the responsibility of the purchaser to specify
all requirements that are necessary for material under this
specification. Such requirements may include, but are not
limited to, the following information:
3.1.1 Quantity of each size,
3.1.2 Wire size, diameter in inches or [millimetres] (Section
12), and
3.1.3 Weight [Mass], inside diameter, and method of band-
ing of coils.
4. Zinc for Coating
4.1 The slab zinc used for the coating shall be any grade of
zinc conforming to Specification B 6.
5. Base Metal
5.1 The base metal shall be open-hearth, basic-oxygen, or
electric-furnace steel, ingot or continuous cast, and of such
quality that, when processed and zinc-coated, the finished wire
shall have the properties prescribed in this specification.
6. Joints
6.1 The wire shall be furnished in coils of one continuous
length. Welds made prior to final wire drawing shall be
permitted.
7. Tensile Strength
7.1 The zinc-coated wire shall have a tensile strength of not
less than 50 000 psi [345 MPa], nor more than 70 000 psi [483
MPa]. The tensile strength of the zinc-coated wire shall be
determined in accordance with Test Methods E 8. The diameter
of the wire shall be measured over the zinc coating for the
purpose of calculating the tensile strength.
8. Elongation
8.1 The zinc-coated wire shall have an elongation of not less
than 10 % in 10 in. [254 mm] for nominal sizes 0.284 in. [7.21
mm] and smaller. Nominal sizes larger than 0.284 in. shall have
an elongation of not less than 9 % in 10 in. The elongation shall
be determined as the permanent increase in length after failure
of a marked section of the wire originally 10 in. in length.
9. Torsion Test
9.1 The zinc-coated wire shall withstand without fracture
the minimum number of turns specified in Table 1. This test
shall be done in accordance with Test Method A 938 and the
number of turns to failure shall meet the requirements of Table
1.
10. Weight of Coating
10.1 The weight of zinc coating, in ounces per square foot
or [grams per square metre] of uncoated wire surface, shall be
not less than that specified in Table 2.
10.2 Weight of Coating Test—The zinc coating shall be
tested for weight by a stripping test in accordance with Test
Methods A 90/A 90M.
11. Adherence of Coating
11.1 The zinc coating shall remain adherent when the wire
is wrapped at a rate of not more than 15 turns per minute in a
close helix of at least 2 turns around a cylindrical mandrel of
1
This specification is under the jurisdiction of ASTM Committee A05 on
Metallic Coated Iron and Steel Products and is the direct responsibility of
Subcommittee A05.12 on Wire Specifications.
Current edition approved October 1, 2003. Published December 2003. Originally
approved in 1957. Last previous edition approved in 1998 as A 411 - 98.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
1
*A Summary of Changes section appears at the end of this standard.
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