ASTM A474 - 03(2013)

    Standard Specification for Aluminum-Coated Steel Wire Strand

    Active Standard ASTM A474 | Developed by Subcommittee: A05.12

    Book of Standards Volume: 01.06


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    Abstract

    This specification covers five grades of aluminum-coated, steel wire strand composed of a number of round, steel wires, with aluminum coatings, for use as guys, messengers, span wires, and for similar purposed. The five grades are as follows: (1) utilities; (2) common; (3) Siemens-Martin; (4) high-strength; and (5)extra high-strength. The base metal shall be steel made by any commercially steel making process, The ingot or pig aluminum used for coating shall conform to the required impurity limits of copper and iron. All wires shall be stranded with uniform tension. Physical tests shall be performed wherein the steel wire strands shall conform to the required values of breaking strength. The steel specimens shall also conform to the required values of elongation, diameter and weight of coating.

    This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

    1. Scope

    1.1 This specification covers five grades of aluminum-coated, steel wire strand, composed of a number of round, steel wires, with aluminum coatings, for use as guys, messengers, span wires, and for similar purposes.

    1.2 The five grades covered are as follows:

    1.2.1 Utilities,

    1.2.2 Common,

    1.2.3 Siemens-Martin,

    1.2.4 High-Strength, and

    1.2.5 Extra High-Strength.

    1.3 Minimum breaking strengths of strand for each grade are specified in Table 1.

    TABLE 1 Physical Properties of Aluminum-Coated Steel Wire Strand

    Nominal
    Diameter
    of Strand,
    in. (mm)

    Number
    of Wires
    in
    Strand

    Nominal
    Diameter
    of Coated
    Wires in
    Strand, in.
    (mm)

    Approximate
    Weight of
    Strand,
    lb/1000 ft
    (kg/m)

    Minimum Breaking Strength of Strand, lbf (kN)

    Utilities GradeA

    Common
    Grade

    Siemens-
    Martin
    Grade

    High-
    Strength
    Grade

    Extra-High-
    Strength
    Grade

    3/16 

    (4.76)

    7

    0.062 (1.57)

     73 (0.108)

      . . .

    . . .

     1 150

    (5.1)

      1 900

    (8.5)

      2 850

    (12.7)

     . . .

    . . .

    3/16 

    (4.76)

    7

    0.065 (1.65)

     80 (0.118)

      2 400

    (10.7)  (1)B

     . . .

    . . .

      . . .

    . . .

      . . .

    . . .

     . . .

    . . .

    1/4 

    (6.35)

    3

    0.120 (3.05)

    117 (0.173)

      3 150

    (14.0)  (2)

     . . .

    . . .

      . . .

    . . .

      . . .

    . . .

     . . .

    . . .

    1/4 

    (6.35)

    3

    0.120 (3.05)

    117 (0.173)

      4 500

    (20.0)  (3)

     . . .

    . . .

      . . .

    . . .

      . . .

    . . .

     . . .

    . . .

    1/4 

    (6.35)

    7

    0.080 (2.03)

    121 (0.179)

      . . .

    . . .

     1 900

    (8.5)

      3 150

    (14.0)

      4 750

    (21.1)

     6 650

    (29.6)

    9/32 

    (7.14)

    7

    0.093 (2.36)

    164 (0.243)

      4 600

    (20.5)  (1)

     . . .

    . . .

      . . .

    . . .

      . . .

    . . .

     . . .

    . . .

    5/16 

    (7.94)

    3

    0.145 (3.68)

    171 (0.253)

      6 500

    (28.9)  (3)

     . . .

    . . .

      . . .

    . . .

      . . .

    . . .

     . . .

    . . .

    5/16 

    (7.94)

    7

    0.104 (2.64)

    205 (0.303)

      . . .

    . . .

     3 200

    (14.2)

      5 350

    (23.8)

      8 000

    (35.6)

     11 200

    (49.8)

    5/16 

    (7.94)

    7

    0.109 (2.77)

    225 (0.333)

      6 000

    (26.7)  (1)

     . . .

    . . .

      . . .

    . . .

      . . .

    . . .

     . . .

    . . .

    3/8 

    (9.52)

    3

    0.165 (4.19)

    220 (0.326)

      8 500

    (37.8)  (3)

     . . .

    . . .

      . . .

    . . .

      . . .

    . . .

     . . .

    . . .

    3/8 

    (9.52)

    7

    0.120 (3.05)

    273 (0.404)

     11 500

    (51.2)  (4)

     4 250

    (18.9)

      6 950

    (30.9)

     10 800

    (48.0)

     15 400

    (68.5)

    7/16 

    (11.11)

    7

    0.145 (3.68)

    399 (0.591)

     18 000

    (80.1)  (4)

     5 700

    (25.4)

      9 350

    (41.6)

     14 500

    (64.5)

     20 800

    (92.5)

    1/2 

    (12.7)

    7

    0.165 (4.19)

    517 (0.765)

     25 000

    (111.2) (4)

     7 400

    (32.9)

     12 100

    (53.8)

     18 800

    (83.6)

     26 900

    (119.7)

    A The utilities grade is used principally by communication and power and light industries.
    B The last numbers in parentheses refer to elongation requirements specified in Section 9.

    1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    A428/A428M Test Method for Weight [Mass] of Coating on Aluminum-Coated Iron or Steel Articles


    ICS Code

    ICS Number Code 29.060.10 (Wires)

    UNSPSC Code

    UNSPSC Code 31152206(Coated steel wire)


    Referencing This Standard

    DOI: 10.1520/A0474-03R13

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM A474-03(2013), Standard Specification for Aluminum-Coated Steel Wire Strand, ASTM International, West Conshohocken, PA, 2013, www.astm.org

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