1.1This 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.
1.2The five grades covered are as follows:
1.2.5Extra High-Strength.
1.3Minimum 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) |
1.4The 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.
1.5This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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