1、Designation: A 603 98 (Reapproved 2003)Standard Specification forZinc-Coated Steel Structural Wire Rope1This standard is issued under the fixed designation A 603; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last rev
2、ision. A number in parentheses indicates the year of last reapproval. Asuperscript 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. Scope1.1 This specification covers zinc-coated steel
3、structuralwire rope, prestretched or nonprestretched for use where ahigh-strength, relatively flexible prefabricated zinc-coatedmultiple-wire tension member is desired as a component partof a structure.1.2 The wire rope is furnished with Class A weight zinc-coated wires throughout. It can be furnish
4、ed with Class Bweight or Class C weight zinc-coated outer wires or Class Bweight or Class C weight zinc-coated wires throughout whereadditional corrosion protection is required.1.3 The values stated in inch-pound units are to be regardedas the standard. The values given in brackets are for informa-t
5、ion only.2. Referenced Documents2.1 ASTM Standards:A 90/A 90M Test Method for Weight (Mass) of Coating onIron or Steel Articles with Zinc or Zinc-Alloy Coatings2A 902 Terminology Relating to Metallic Coated Steel Prod-ucts2B6 Specification for Zinc (Slab Zinc)33. Terminology3.1 DefinitionsFor defini
6、tions of terms used in this speci-fication, see Terminology A 902.4. Ordering Information4.1 Orders for material under this specification shall includethe following information:4.1.1 Length of wire rope,4.1.2 Nominal diameter of wire rope (Tables 1-4),4.1.3 Prestretched (see 8.3) or nonprestretched,
7、4.1.4 Coating-weight class if other than Class A (Table 5),4.1.5 Mechanical tests if required (see 10.1),4.1.6 Special packaging requirements (Section 13), and4.1.7 Inspection (Section 12).5. Materials and Manufacture5.1 Base MetalThe base metal shall be carbon steel madeby the open-hearth, basic-ox
8、ygen, or electric-furnace processand of such quality that the finished wire rope and thehard-drawn individual zinc-coated wires coated by the hot-dipor electrolytic process shall have the properties and character-istics as prescribed in this specification.5.2 ZincThe slab zinc when used shall confor
9、m to Speci-fication B6or better.6. Physical Properties6.1 Tensile Properties:6.1.1 The zinc-coated wire used in the wire rope shallconform to the mechanical properties in Table 6 prior tofabrication, but the wire test sample may be prestretched to55 % of the minimum tensile strength specified in Tab
10、le 6 priorto conducting the tests.6.1.2 The tensile strength and the stress at 0.7 % extensionshall be based on the actual cross-sectional area of the finishedwire, including the zinc coating.6.1.3 Test SpecimensThe test specimens shall be free ofbends or kinks other than the curvature resulting fro
11、m the usualcoiling operation. The hand straightening necessary to permitinsertion of the specimen in the jaws of the testing machineshall be performed by drawing between wood blocks or bysome other equally satisfactory means.6.2 Stress at 0.7 % Extension Under LoadThe value ofstress at 0.7 % extensi
12、on under load shall be determined by oneof the following procedures, depending on the type of exten-someter used:6.2.1 Non-Autographic ExtensometerWhen a non-autographic extensometer is used to measure the 0.7 % exten-sion, it shall have a gage length of 10 in. 254 mm, and it shallbe so graduated th
13、at the smallest division corresponds to astrain not larger than 0.0001 in./in. 0.0001 mm/mm of gagelength. Apply a load corresponding to the tensile stressindicated in Table 5, using the nominal diameter of thespecimen. Maintain this load while a 10-in. extensometer isattached and adjusted to the in
14、itial setting shown in Table 5.1This specification is under the jurisdiction of ASTM Committee A05 onMetallic-Coated Iron and Steel Products and is the direct responsibility ofSubcommittee A05.12 on Wire Specifications.Current edition approved April 10, 2003. Published June 2003. Originallyapproved
15、in 1970. Last previous edition approved in 1998 as A 603 98.2Annual Book of ASTM Standards, Vol 01.06.3Annual Book of ASTM Standards, Vol 02.04.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.TABLE 1 Properties of Single-Class Zinc-C
16、oated Steel Structural Wire Rope (Inch-Pound Units)Nominal Diameter, in.Minimum Breaking Strength in Tons of 2000 lbApproximate GrossMetallic Area, in.2ApproximateWeight/ft, lbClass A CoatingThroughoutClass B CoatingThroughoutClass C CoatingThroughout3/8 6.5 6.2 5.9 0.065 0.247/16 8.8 8.4 8.0 0.091
17、0.321/2 11.5 11.0 10.5 0.119 0.429/16 14.5 13.8 13.2 0.147 0.535/8 18.0 17.2 16.4 0.182 0.6511/16 21.5 20.5 19.5 0.221 0.793/4 26.0 24.8 23.6 0.268 0.9513/16 30.0 28.6 27.3 0.311 1.107/8 35.0 33.4 31.8 0.361 1.2815/16 40.0 38.2 36.4 0.414 1.471 45.7 43.6 41.5 0.471 1.6711/8 57.8 55.1 52.5 0.596 2.11
18、11/4 72.2 68.9 65.6 0.745 2.6413/8 87.8 83.8 79.8 0.906 3.2111/2 104.0 99.2 94.5 1.076 3.8215/8 123.0 117.0 112.0 1.270 4.5113/4 143.0 136.0 130.0 1.470 5.2417/8 164.0 156.0 149.0 1.690 6.032 186.0 177.0 169.0 1.920 6.8521/8 210.0 200.0 191.0 2.170 7.7321/4 235.0 224.0 214.0 2.420 8.6623/8 261.0 249
19、.0 237.0 2.690 9.6121/2 288.0 275.0 262.0 2.970 10.6025/8 317.0 302.0 288.0 3.270 11.6223/4 347.0 331.0 315.0 3.580 12.7427/8 379.0 362.0 344.0 3.910 13.903 412.0 393.0 374.0 4.250 15.1131/4 475.0 453.0 432.0 5.040 18.0031/2 555.0 529.0 504.0 5.830 21.0033/4 640.0 611.0 582.0 6.670 24.004 730.0 696.
20、0 664.0 7.590 27.00TABLE 2 Properties of Single-Class Zinc-Coated Steel Structural Wire Rope (SI Units)Nominal Diameter, mmMinimum Breaking Strength in Metric TonsApproximate GrossMetallic Area, mm2ApproximateWeight/m, kgClass A CoatingThroughoutClass B CoatingThroughoutClass C CoatingThroughout9.53
21、 5.9 5.6 5.4 41.9 0.3611.11 8.0 7.6 7.3 58.7 0.4812.70 10.4 10.0 9.5 76.8 0.6214.29 13.2 12.5 12.0 94.8 0.7915.88 16.3 15.6 14.9 117.4 0.9717.46 19.5 18.6 17.7 142.6 1.1819.05 23.6 22.5 21.4 172.9 1.4120.64 27.2 25.9 24.8 200.7 1.6422.23 31.8 30.3 28.8 232.9 1.9023.81 36.3 34.7 33.0 267.1 2.1925.40
22、41.5 39.6 37.6 303.9 2.4828.58 52.4 50.0 47.6 384.5 3.1431.75 65.5 62.5 59.5 480.7 3.9334.93 79.7 76.0 72.4 584.6 4.7838.10 94.3 90.0 85.7 694.2 5.6841.28 112.0 106.0 101.0 819.4 6.7144.45 130.0 124.0 118.0 948.4 7.8047.63 149.0 142.0 135.0 1090.4 8.9750.80 169.0 161.0 153.0 1238.8 10.1953.98 190.0
23、182.0 173.0 1400.1 11.5057.15 213.0 203.0 194.0 1561.4 12.8960.33 237.0 226.0 215.0 1735.6 14.3063.50 261.0 249.0 238.0 1916.2 15.7766.68 288.0 274.0 261.0 2109.8 17.2969.85 315.0 300.0 286.0 2309.8 18.9673.03 344.0 328.0 312.0 2522.7 20.6876.20 374.0 356.0 340.0 2742.1 22.4882.55 431.0 411.0 392.0
24、3251.8 26.7888.90 504.0 480.0 458.0 3761.5 31.2595.25 581.0 554.0 528.0 4303.5 35.71101.60 662.0 632.0 602.0 4897.1 40.18A 603 98 (2003)2Then increase the load uniformly until the extensometerindicates an extension of 0.07 in. 1.78 mm or 0.7 % exten-sion. Record the load for this extension. The stre
25、ss correspond-ing to this load shall meet the requirements for the stress of0.7 % extension specified in Table 6, depending on the class ofcoating under consideration. Hold the specimen at 0.7 %extension under load and remove the extensometer used tomeasure the stress at 0.7 % extension; then replac
26、e it with anelongation extensometer. Continue the application of load untilfracture occurs. Record the elongation attained from theelongation extensometer and add to it 0.7 % obtained from thestress at 0.7 % extensometer to get the total elongation.6.2.2 Autographic ExtensometerWhen an autographic e
27、x-tensometer is used, it shall have a gage length of at least 2 in.50.8 mm and the magnification of strain shall not be less than250. Apply a load, corresponding to the tensile stress indicatedin Table 5, using the nominal diameter of the specimen.Maintain this load and attach the extensometer. Then
28、 increasethe load uniformly until the extension recorded by the exten-someter is at least 0.7 %. Determine the load at 0.7 % exten-sion from the load-strain curve. The stress corresponding tothis load shall meet the requirements for stress at 0.7 %extension prescribed in Table 6, depending on the cl
29、ass ofcoating under consideration. Hold the specimen at 0.7 %extension under load and remove the extensometer used tomeasure the stress at 0.7 % extension; then replace it with anelongation extensometer. Continue the application of load untilfracture occurs. Record the elongation attained from theel
30、ongation extensometer and add to it 0.7 % obtained from thestress at 0.7 % extensometer to get the total elongation.NOTE 1The extensometer used for the stress at 0.7 % extension andthe elongation extensometer may be the same instrument. Two separateinstruments are advisable in that the more sensitiv
31、e stress at 0.7 %extensometer which could be damaged when the wire fractures, may beremoved following the determination of the 0.7 % extension. The elon-gation extensometer may be constructed with less sensitive parts or beconstructed in such a way that little damage would result if fracture occursw
32、hile the extensometer is attached to the specimen.6.3 ElongationIn determining total elongation (elasticplus plastic extension) autographic or extensometer methodsmay be employed. If fracture takes place outside the middlethird of the gage length, the elongation value obtained may notbe representati
33、ve of the material.6.4 Tensile StrengthThe tensile strength is determinedfrom the maximum load during the total elongation test.6.5 Ductility of SteelThe zinc-coated wire, prior to fabri-cation into wire rope, shall be capable of being wrapped twoturns in a close helix at a rate not exceeding 15 tur
34、ns/minaround a cylindrical steel mandrel equal to three times thenominal diameter of the wire under test without fracture of thewire.6.6 Weight of Zinc CoatingThe weight of the zinc coatingon the individual wires prior to the fabrication of the wire ropeshall be not less than that specified in Table
35、 7 when tested inaccordance with the stripping test of Test MethodA 90/A 90M.TABLE 3 Properties of Multi-Class Zinc-Coated Steel Structural Wire Rope (Inch-Pound Units)Nominal Diameter, in.Minimum Breaking Strength in Tons of 2000 lbApproximate GrossMetallic Area, in.2ApproximateWeight/ft, lbClass A
36、 CoatingThroughoutClass B CoatingOuter WiresClass A CoatingInner WireClass C CoatingOuter WiresClass A CoatingInner Wires3/8 6.5 6.3 6.1 0.065 0.247/16 8.8 8.5 8.2 0.091 0.321/2 11.5 11.1 10.7 0.119 0.429/16 14.5 14.0 13.5 0.147 0.535/8 18.0 17.4 16.8 0.182 0.6511/16 21.5 20.8 20.0 0.221 0.793/4 26.
37、0 25.1 24.2 0.268 0.9513/16 30.0 29.0 28.0 0.311 1.107/8 35.0 33.8 32.6 0.361 1.2815/16 40.0 38.6 37.3 0.414 1.471 45.7 44.1 42.6 0.471 1.6711/8 57.8 55.8 53.9 0.596 2.1111/4 72.2 69.7 67.3 0.745 2.6413/8 87.8 84.8 81.8 0.906 3.2111/2 104.0 100.0 96.9 1.076 3.8215/8 123.0 120.0 117.0 1.270 4.5113/4
38、143.0 140.0 136.0 1.470 5.2417/8 164.0 160.0 156.0 1.690 6.032 186.0 182.0 177.0 1.920 6.8521/8 210.0 205.0 200.0 2.170 7.7321/4 235.0 230.0 224.0 2.420 8.6623/8 261.0 255.0 249.0 2.690 9.6121/2 288.0 281.0 275.0 2.970 10.6025/8 317.0 310.0 302.0 3.270 11.6223/4 347.0 339.0 331.0 3.580 12.7427/8 379
39、.0 372.0 365.0 3.910 13.903 412.0 405.0 397.0 4.250 15.1131/4 475.0 466.0 457.0 5.040 18.0031/2 555.0 545.0 534.0 5.830 21.0033/4 640.0 628.0 616.0 6.670 24.004 730.0 717.0 703.0 7.590 27.00A 603 98 (2003)36.7 Adherence of CoatingThe zinc-coated wire, prior tofabrication into wire rope, shall be cap
40、able of being wrappedtwo turns in a close helix at a rate not exceeding 15 turns/minaround a cylindrical steel mandrel equal to five times thenominal diameter of the wire under test without cracking orflaking the zinc coating to such an extent that any zinc can beremoved by rubbing with the bare fin
41、gers. Loosening ordetachment during the adherence test of superficial smallparticles of zinc, formed by mechanical polishing of thesurface of zinc-coated wire, shall not be considered cause forrejection.6.8 FinishThe zinc-coated wire surface shall be free ofimperfections not consistent with good com
42、mercial practice.The coating shall be continuous and reasonably uniform.TABLE 4 Properties of Multi-Class Zinc-Coated Steel Structural Wire Rope (SI Units)Nominal Diameter, mmMinimum Breaking Strength in Metric TonsApproximate GrossMetallic Area, mm2ApproximateWeight/m, kgClass A CoatingThroughoutCl
43、ass B CoatingOuter WiresClass A CoatingInner WiresClass C CoatingOuter WiresClass A CoatingInner Wire9.53 5.9 5.7 5.5 41.9 0.3611.11 8.0 7.7 7.4 58.7 0.4812.70 10.4 10.1 9.7 76.8 0.6214.29 13.2 12.7 12.2 94.8 0.7915.88 16.3 15.8 15.2 117.4 0.9717.46 19.5 18.9 18.1 142.6 1.1819.05 23.6 22.8 22.0 172.
44、9 1.4120.64 27.2 26.3 25.4 200.7 1.6422.23 31.8 30.7 29.6 232.9 1.9023.81 36.3 35.0 33.8 267.1 2.1925.40 41.5 40.0 38.6 303.9 2.4828.58 52.4 50.6 48.9 384.5 3.1431.75 65.5 63.2 61.1 480.7 3.9334.93 79.7 76.9 74.2 584.6 4.7838.10 94.3 91.2 87.9 694.2 5.6841.28 112.0 109.0 106.0 819.4 6.7144.45 130.0
45、127.0 124.0 948.4 7.8047.63 149.0 145.0 142.0 1090.4 8.9750.80 169.0 165.0 161.0 1238.8 10.1953.98 190.0 186.0 182.0 1400.1 11.5057.15 213.0 208.0 203.0 1561.4 12.8960.33 237.0 231.0 226.0 1735.6 14.3063.50 261.0 255.0 249.0 1916.2 15.7766.68 288.0 281.0 274.0 2109.8 17.2969.85 315.0 308.0 300.0 230
46、9.8 18.9673.03 344.0 338.0 331.0 2522.7 20.6876.20 374.0 367.0 360.0 2742.1 22.4882.55 431.0 423.0 415.0 3251.8 26.7888.90 504.0 494.0 485.0 3761.5 31.2592.25 581.0 570.0 559.0 4303.5 35.71101.60 662.0 650.0 638.0 4897.1 40.18TABLE 5 Initial Settings for Determining Stress at 0.7 % ExtensionNominal
47、Diameter Initial Stress Initial Setting of Extensometer,in./in. or mm/mmin. mm ksi MPa0.040 to 0.089, incl 1.270 to 2.283, incl 14 100 0.0005 (0.05 % extension)0.090 to 0.119, incl 2.286 to 3.045, incl 28 190 0.0010 (0.10 % extension)0.120 and largerA3.048 and largerA42 290 0.0015 (0.15 % extension)
48、AThis is not to imply that larger wire will be manufactured to any unlimited diameter. It only implies that the wire sizes chosen by the strand manufacturer must meetthe requirements of this specification.TABLE 6 Mechanical RequirementsZinc CoatingClassNominal DiameterStress at 0.7 % Extension Under
49、Load, minTensile Strength, minTotal Elongationin 10 in. or 250mm, min, %in. mm psi MPa psi MPaA 0.040 to 0.110 1.016 to 2.794 150 000 1030 220 000 1520 2.00.111 and largerA2.820 and largerA160 000 1100 220 000 1520 4.0B 0.090 and largerA2.286 and largerA150 000 1030 210 000 1450 4.0C 0.090 and largerA2.286 and largerA140 000 970 200 000 1380 4.0AThis is not to imply that larger wire will be manufactured to any unlimited diameter. It only implies that the wire sizes chosen by the strand manufacturer must meetthe requirements of this specification.A 603 98 (2003
