Standard Specification for Zinc-Coated Steel Wire …

1 Designation: A 475 03. Standard Specification for Zinc-Coated Steel Wire Strand1. This Standard is issued under the fixed designation A 475; 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. This Standard has been approved for use by agencies of the Department of Defense. 1. Scope* the wires in the strand, the minimum breaking strength of the This specification covers five grades of Zinc-Coated , strand (see Section 7), and the class of coating (see Section 10). Steel wire strand, composed of a number of round, Steel wires, 4. Ordering Information with four weights of zinc coatings, suitable for use as guys, messengers, span wires, and for similar purposes.

2 Orders for material under this specification shall include The five grades covered are as follows: the following information: Utilities, Quantity of strand in feet, Common, Nominal strand diameter, number of wires, grade, and Siemens-Martin, minimum breaking strength of strand (Section 7 and Table 1), High-Strength, and Weight (class) of zinc coating (Section 10 and Table Extra High-Strength. 2), Minimum breaking strengths of strand for each grade Length of strand in coils or on reels (Section 18), and are described in Section 7. ASTM designation and year of issue. The four weights of zinc coatings are: Class 1 and 5. Materials and Manufacture Classes A, B, and C. Minimum weights of zinc coatings are described in Section 10. The base metal shall be Steel made by any commercially The values stated in inch-pound units are to be regarded accepted Steel making process and of such quality and purity as the Standard .

3 The values given in brackets are for informa- that, when drawn to the size of wire specified and coated with tion only. zinc , the finished strand and the individual wires shall be of uniform quality and have the properties and characteristics as 2. Referenced Documents prescribed in this specification. ASTM standards : 2 The slab zinc , when used for the coating, shall be any A 90/A 90M Test Method for Weight [Mass] of Coating on grade of zinc conforming to Specification B 6. Iron and Steel Articles with zinc or Zonc-Alloy Coatings 6. Stranding A 902 Terminology Relating to Metallic coated Steel Prod- ucts Unless otherwise specified, strand shall have a left lay. A. B 6 Specification for zinc left lay is defined as a counter-clockwise twist away from the observer. All wires shall be stranded with uniform tension.

4 3. Terminology Stranding shall be sufficiently close to ensure no appreciable Definitions For definitions of terms used in this stan- reduction in diameter when stressed to 10 % of the minimum dard, refer to Terminology A 902. breaking strength. Definitions of Terms Specific to This Standard : The 3-wire strand shall consist of three wires concen- strand the designation of the finished strand shall be trically twisted with a uniform pitch of not less than 14 nor expressed as the nominal diameter of the strand, the number of more than 203 the specified nominal diameter of the strand. The 7-wire strand shall consist of a center wire with a 6-wire layer concentrically twisted over it with a uniform pitch 1. This specification is under the jurisdiction of ASTM Committee A05 on of not more than 163 the specified nominal diameter of the Metallic coated Iron and Steel Products and is the direct responsibility of strand.

5 Subcommittee on Wire Specifications. Current edition approved October 1, 2003. Published December 2003. Originally The 19-wire strand shall consist of a center wire with a approved in 1962. Last previous edition approved in 1998 as A 475 - 98. 6-wire layer concentrically twisted over it, having a right lay 2. For referenced ASTM standards , visit the ASTM website, , or and a uniform pitch of not more than 163 the nominal contact ASTM Customer Service at For Annual Book of ASTM. standards volume information, refer to the Standard 's Document Summary page on diameter of this 7-wire core. The nominal diameter of this the ASTM website. 7-wire core shall be considered to be 33 the nominal diameter *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.

6 1. Copyright by ASTM Int'l (all rights reserved); Wed May 10 14:33:45 EDT 2006. Reproduction authorized per License Agreement with MURRAY M SOMMER (THE WIRE SOURCE LLC);. TABLE 1 Physical Properties of Zinc-Coated Steel Wire Strand NOTE 1 The numbers in boldface type indicate sizes and grades most commonly used and readily available. Nominal Number Nominal Approximate Diameter of Wires Diameter Weight of of Strand, in Strand of coated Strand, Minimum Breaking Strength of Strand, lbf [kN]. in. [mm] Wires in lb/1000. Strand, ft [kg/. in. [mm] km]. Utilities GradeA Common Siemens- High- Extra High- Grade Martin Strength Strength Grade Grade Grade 18 [ ] 7 [ ] 32 [48] .. 540 [ ] 910 [ ] 1 330 [ ] 1 830 [ ]. 5 32. [ ] 7 [ ] 51 [76] .. 870 [ ] 1 470 [ ] 2 140 [ ] 2 940 [ ]. 3 16. [ ] 7 [ ] 73 [109].

7 1 150 [ ] 1 900 [ ] 2 850 [ ] 3 990 [ ]. 3 16 [ ] 7 [ ] 80 [119] 2 400 [ ] (1)B .. 7 32 [ ] 3 [ ] 88 [131] .. 1 400 [ ] 2 340 [ ] 3 500 [ ] 4 900 [ ]. 7 32 [ ] 7 [ ] 98 [146] .. 1 540 [ ] 2 560 [ ] 3 850 [ ] 5 400 [ ]. 14. [ ] 3 [ ] 117 [174] 3 150 [ ] (2)B 1 860 [ ] 3 040 [ ] 4 730 [ ] 6 740 [ ]. 14. [ ] 3 [ ] 117 [174] 4 500 [ ] (3)B .. 2. 1 4 [ ] 7 [ ] 121 [180] .. 1 900 [ ] 3 150 [ ] 4 750 [ ] 6 650 [ ]. 9 32 [ ] 3 [ ] 137 [204] .. 2 080 [ ] 3 380 [ ] 5 260 [ ] 7 500 [ ]. 9 32 [ ] 7 [ ] 164 [244] 4 600 [ ] (1)B 2 570 [ ] 4 250 [ ] 6 400 [ ] 8 950 [ ]. 5 16 [ ] 3 [ ] 171 [255] 6 500 [ ] (3)B 2 490 [ ] 4 090 [ ] 6 350 [ ] 9 100 [ ]. A 475 03. 5 16. [ ] 7 [ ] 205 [305] .. 3 200 [ ] 5 350 [ ] 8 000 [ ] 11 200 [ ]. Copyright by ASTM Int'l (all rights reserved); Wed May 10 14:33:45 EDT 2006. 5 16.

8 [ ] 7 [ ] 225 [335] 6 000 [ ] (1)B .. 38 [ ] 3 [ ] 220 [328] 8 500 [ ] (3)B 3 330 [ ] 5 560 [ ] 8 360 [ ] 11 800 [ ]. 38 [ ] 7 [ ] 273 [407] 11 500 [ ] (4)B 4 250 [ ] 6 950 [ ] 10 800 [ ] 15 400 [ ]. 7 16. [ ] 7 [ ] 399 [595] 18 000 [ ] (4)B 5 700 [ ] 9 350 [ ] 14 500 [ ] 20 800 [ ]. 12 [ ] 7 [ ] 517 [770] 25 000 [ ] (4)B 7 400 [ ] 12 100 [ ] 18 800 [ ] 26 900 [ ]. 12 [ ] 19 [ ] 504 [751] .. 7 620 [ ] 12 700 [ ] 19 100 [ ] 26 700 [ ]. 9 16. [ ] 7 [ ] 671 [1000] .. 9 600 [ ] 15 700 [ ] 24 500 [ ] 35 000 [ ]. 9 16. [ ] 19 [ ] 637 [949] .. 9 640 [ ] 16 100 [ ] 24 100 [ ] 33 700 [ ]. 58 [ ] 7 [ ] 813 [1211] .. 11 600 [ ] 19 100 [ ] 29 600 [ ] 42 400 [ ]. 58. [ ] 19 [ ] 796 [1186] .. 11 000 [ ] 18 100 [ ] 28 100 [ ] 40 200 [ ]. 34. [ ] 19 [ ] 1 155 [1721] .. 16 000 [ ] 26 200 [ ] 40 800 [ ] 58 300 [ ].

9 Reproduction authorized per License Agreement with MURRAY M SOMMER (THE WIRE SOURCE LLC);. 7 8 [ ] 19 [ ] 1 581 [2356] .. 21 900 [ ] 35 900 [ ] 55 800 [ ] 79 700 [ ]. 1 [ ] 19 [ ] 2 073 [3089] .. 28 700 [ ] 47 000 [ ] 73 200 [ ] 104 500 [ ]. 1 [ ] 37 [ ] 2 057 [3065] .. 28 300 [ ] 46 200 [ ] 71 900 [ ] 102 700 [ ]. 1 1 8 [ ] 37 [ ] 2 691 [4010] .. 36 000 [ ] 58 900 [ ] 91 600 [ ] 130 800 [ ]. 1 1 4 [ ] 37 [ ] 3 248 [4840] .. 44 600 [ ] 73 000 [ ] 113 600 [ ] 162 200 [ ]. A. The utilities grade is used principally by communication and power and light industries. B. Refer to elongation requirements specified in Section 8. A 475 03. TABLE 2 Nominal Diameters and Minimum Weights of Coating 7. Breaking Strength and Weight for Zinc-Coated Steel WiresA. The approximate weight per unit length of strand and Nominal Diam- Minimum Weight of Coating, oz/ft2 [g/m2] of Uncoated Wire eter of coated Surface the minimum breaking strength of the finished strand shall be Wire in the as specified in Table 1.

10 Strand, in. Class 1B Class AC Class BD Class CD A test in which the breaking strength is below the [mm]. minimum specified and which may have been caused by the [ ] [46] [122] [244] [366]. [ ] [46] [122] [244] [366]. slipping of the specimen in the jaws of the testing machine, by [ ] [46] [153] [305] [458] breaking within the jaws or within 1 in. [ mm] of the jaws, [ ] [46] [153] [305] [458] or by the improper socketing of a specimen shall be disre- [ ] [46] [153] [305] [458]. garded and another sample from the same coil or reel shall be [ ] [92] [183] [366] [549] tested. Tests shall be made on lengths of strand that do not [ ] [92] [214] [427] [641] contain wire joints or splices. [ ] [92] [214] [427] [641]. [ ] [92] [244] [488] [732]. [ ] [92] [244] [488] [732] 8. Elongation The elongation of the strand in 24 in.