【ASTM标准】A 603 – 98;QTYWMY05OA__

Designation: A 603 98 Standard Specifi cation for Zinc-Coated Steel Structural Wire Rope1 This standard is issued under the fi xed designation A 603; 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 specifi cation covers zinc-coated steel structural wire rope, prestretched or nonprestretched for use where a high-strength, relatively fl exible prefabricated zinc-coated multiple-wire tension member is desired as a component part of a structure. 1.2 The wire rope is furnished with Class A weight zinc- coated wires throughout. It can be furnished with Class B weight or Class C weight zinc-coated outer wires or Class B weight or Class C weight zinc-coated wires throughout where additional corrosion protection is required. 1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only. 2. Referenced Documents 2.1 ASTM Standards: A 90/A 90M Test Method for Weight of Coating on Zinc- Coated (Galvanized) Iron or Steel Articles2 A 902 Terminology Relating to Metallic Coated Steel Prod- ucts2 B 6 Specifi cation for Zinc (Slab Zinc)3 3. Terminology 3.1 Defi nitionsFor defi nitions of terms used in this speci- fi cation, see Terminology A 902. NOTE 1The following term used in this specifi cation is defi ned in Terminology A 902: carbon steel. 4.Ordering Information 4.1 Orders for material under this specifi cation shall include the 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, 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), and 4.1.7 Inspection (Section 12). 5. Materials and Manufacture 5.1 Base MetalThe base metal shall be carbon steel made by the open-hearth, basic-oxygen, or electric-furnace process and of such quality that the fi nished wire rope and the hard-drawn individual zinc-coated wires coated by the hot-dip or electrolytic process shall have the properties and character- istics as prescribed in this specifi cation. 5.2 ZincThe slab zinc when used shall conform to Speci- fi cation B 6 or better. 6. Physical Properties 6.1 Tensile Properties: 6.1.1 The zinc-coated wire used in the wire rope shall conform to the mechanical properties in Table 6 prior to fabrication, but the wire test sample may be prestretched to 55 % of the minimum tensile strength specifi ed in Table 6 prior to conducting the tests. 6.1.2 The tensile strength and the stress at 0.7 % extension shall be based on the actual cross-sectional area of the fi nished wire, including the zinc coating. 6.1.3 Test SpecimensThe test specimens shall be free of bends or kinks other than the curvature resulting from the usual coiling operation. The hand straightening necessary to permit insertion of the specimen in the jaws of the testing machine shall be performed by drawing between wood blocks or by some other equally satisfactory means. 6.2 Stress at 0.7 % Extension Under LoadThe value of stress at 0.7 % extension under load shall be determined by one of the following procedures, depending on the type of exten- someter used: 6.2.1 Non-AutographicExtensometerWhenanon- autographic extensometer is used to measure the 0.7 % exten- sion, it shall have a gage length of 10 in. (254 mm), and it shall be so graduated that the smallest division corresponds to a strain not larger than 0.0001 in./in. (0.0001 mm/mm) of gage length. Apply a load corresponding to the tensile stress indicated in Table 5, using the nominal diameter of the specimen. Maintain this load while a 10-in. extensometer is attached and adjusted to the initial setting shown in Table 5. 1 This specifi cation is under the jurisdiction of ASTM Committee A-5 on Metallic-Coated Iron and Steel Productsand is the direct responsibility of Subcom- mittee A05.12on Wire Specifi cations. Current edition approved April 10, 1998. Published October 1998. Originally published as A 603 70. Last previous edition A 603 94. 2Annual Book of ASTM Standards, Vol 01.06. 3Annual Book of ASTM Standards, Vol 02.04. 1 Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States. NOTICE: This standard has either been superceded and replaced by a new version or discontinued. Contact ASTM International () for the latest information. Then increase the load uniformly until the extensometer indicates an extension of 0.07 in. (1.78 mm) or 0.7 % exten- sion. Record the load for this extension. The stress correspond- ing to this load shall meet the requirements for the stress of 0.7 % extension specifi ed in Table 6, depending on the class of coating under consideration. Hold the specimen at 0.7 % extension under load and remove the extensometer used to measure the stress at 0.7 % extension; then replace it with an elongation extensometer. Continue the application of load until fracture occurs. Record the elongation attained from the elongation extensometer and add to it 0.7 % obtained from the stress at 0.7 % extensometer to get the total elongation. 6.2.2 Autographic ExtensometerWhen an autographic ex- tensometer is used, it shall have a gage length of at least 2 in. (50.8 mm) and the magnifi cation of strain shall not be less than 250. Apply a load, corresponding to the tensile stress indicated in Table 5, using the nominal diameter of the specimen. Maintain this load and attach the extensometer. Then increase the 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 to this load shall meet the requirements for stress at 0.7 % extension prescribed in Table 6, depending on the class of coating under consideration. Hold the specimen at 0.7 % extension under load and remove the extensometer used to measure the stress at 0.7 % extension; then replace it with an elongation extensometer. Continue the application of load until fracture occurs. Record the elongation attained from the elongation extensometer and add to it 0.7 % obtained from the stress at 0.7 % extensometer to get the total elongation. NOTE2The extensometer used for the stress at 0.7 % extension and the elongation extensometer may be the same instrument. Two separate instruments are advisable in that the more sensitive stress at 0.7 % extensometer which could be damaged when the wire fractures, may be removed following the determination of the 0.7 % extension. The elon- gation extensometer may be constructed with less sensitive parts or be constructed in such a way that little damage would result if fracture occurs while the extensometer is attached to the specimen. 6.3 ElongationIn determining total elongation (elastic plus plastic extension) autographic or extensometer methods may be employed. If fracture takes place outside the middle third of the gage length, the elongation value obtained may not be representative of the material. 6.4 Tensile StrengthThe tensile strength is determined from 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 two turns in a close helix at a rate not exceeding 15 turns/min around a cylindrical steel mandrel equal to three times the nominal diameter of the wire under test without fracture of the wire. 6.6 Weight of Zinc CoatingThe weight of the zinc coating on the individual wires prior to the fabrication of the wire rope shall be not less than that specifi ed in Table 7 when tested in accordance with the stripping test of Test MethodA 90/A 90M. 6.7 Adherence of CoatingThe zinc-coated wire, prior to fabrication into wire rope, shall be capable of being wrapped two turns in a close helix at a rate not exceeding 15 turns/min around a cylindrical steel mandrel equal to fi ve times the nominal diameter of the wire under test without cracking or TABLE 1Properties of Single-Class Zinc-Coated Steel Structural Wire Rope (Inch-Pound Units) Nominal Diameter, in. Minimum Breaking Strength in Tons of 2000 lb Approximate Gross Metallic Area, in.2 Approximate Weight/ft, lb Class A Coating Throughout Class B Coating Throughout Class C Coating Throughout 3/0.0650.24 7/0.0910.32 1/211.511.010.50.1190.42 9/1614.513.813.20.1470.53 5/818.0820.65 11/1621.520.519.50.2210.79 3/426.024.823.60.2680.95 13/1630.028.627.30.3111.10 7/835.033.431.80.3611.28 15/1640.0141.47 145.743.641.50.4711.67 1 1/857.8962.11 1 1/472.268.965.60.7452.64 1 3/887.883.879.80.9063.21 1 1/2104.099.294.51.0763.82 1 5/8123.0117.0112.01.2704.51 1 3/4143.0136.0130.01.4705.24 1 7/8164.0156.0149.01.6906.03 2186.0177.0169.01.9206.85 2 1/8210.0200.0191.02.1707.73 2 1/4235.0224.0214.02.4208.66 2 3/8261.0249.0237.02.6909.61 2 1/2288.0275.0262.02.97010.60 2 5/8317.0302.0288.03.27011.62 2 3/4347.0331.0315.03.58012.74 2 7/8379.0362.0344.03.91013.90 3412.0393.0374.04.25015.11 3 1/4475.0453.0432.05.04018.00 3 1/2555.0529.0504.05.83021.00 3 3/4640.0611.0582.06.67024.00 4730.0696.0664.07.59027.00 A 603 98 2 NOTICE: This standard has either been superceded and replaced by a new version or discontinued. Contact ASTM International () for the latest information. fl aking the zinc coating to such an extent that any zinc can be removed by rubbing with the bare fi ngers. Loosening or detachment during the adherence test of superfi cial small particles of zinc, formed by mechanical polishing of the surface of zinc-coated wire, shall not be considered cause for rejection. 6.8 FinishThe zinc-coated wire surface shall be free of imperfections not consistent with good commercial practice. The coating shall be continuous and reasonably uniform. NOTE3It is recognized that the surface of heavy zinc coatings, particularly those produced by the hot-dip galvanizing process, are not perfectly smooth and not devoid of irregularities. 7. Test for Coating Weight 7.1 The weight of the zinc coating shall be determined by a stripping test made on the individual wires prior to fabrication of strand, in accordance with Test Method A 90/A 90M. 8. Wire Rope 8.1 The zinc-coated wire rope shall consist of a plurality of strands helically preformed and laid around a core composed of a strand or another wire rope. The number and size of wires and the number of layers of wires in the strands shall be determined by the manufacturer. 8.2 The wire rope properties are shown in Tables 1-4. 8.3 When specifi ed, the wire rope shall be prestretched. The prestretched rope shall meet the minimum modulus of elastic- ity as shown in Table 8. 9. Joints and Splices 9.1 No splicing or joining of strands shall be permitted in the manufactured length of rope. 9.2 Welds made prior to wire drawing are permitted. Joining of wires by welding during the stranding operation is permis- sible, and such joints shall be dispersed sufficiently so as to maintain the minimum breaking strength as listed in Tables 1-4. Joints made during stranding in any wire shall be recoated in a workmanlike manner with zinc or a lead-zinc compound containing a minimum of 50 % zinc. 10. Sampling and Testing of Rope 10.1 If specifi ed, a test specimen shall be taken from each manufactured length of wire rope and tested to minimum breaking strength. If a specimen fails to attain a strength equal to 95 % of the minimum breaking strength requirement, the wire rope represented shall be rejected. If a specimen attains a strength equal to at least 95 % but less than 100 % of the minimum breaking strength requirement, two additional test specimens shall be cut from the same manufactured length and tested. If the average test results of the original specimen and the two retest specimens fail to meet the minimum breaking strength requirement, the wire rope shall be rejected. Any test, however, that fails due to faulty attachment of the sockets shall be disregarded. 11. Rejection and Retest of Wire 11.1 If any wire test specimens breaking within the grips or the jaws of the testing machine results in values below the specifi ed limits for tensile strength, stress at 0.7 % extension or elongation, the results shall be considered invalid and retesting shall be required. 11.2 In case there is reasonable doubt in the fi rst trial as the TABLE 2Properties of Single-Class Zinc-Coated Steel Structural Wire Rope (SI Units) Nominal Diameter, mm Minimum Breaking Strength in Metric Tons Approximate Gross Metallic Area, mm2 Approximate Weight/m, kg Class A Coating Throughout Class B Coating Throughout Class C Coating Throughout 9.541.90.36 11.118.07.67.358.70.48 12.7010.410.09.576.80.62 14.2913.212.512.094.80.79 15.8816.315.614.9117.40.97 17.4619.518.617.7142.61.18 19.0523.622.521.4172.91.41 20.6427.225.924.8200.71.64 22.2331.830.328.8232.91.90 23.8136.334.733.0267.12.19 25.4041.539.637.6303.92.48 28.5852.450.047.6384.53.14 31.7565.562.559.5480.73.93 34.9379.776.072.4584.64.78 38.1094.390.085.7694.25.68 41.28112.0106.0101.0819.46.71 44.45130.0124.0118.0948.47.80 47.63149.0142.0135.01090.48.97 50.80169.0161.0153.01238.810.19 53.98190.0182.0173.01400.111.50 57.15213.0203.0194.01561.412.89 60.33237.0226.0215.01735.614.30 63.50261.0249.0238.01916.215.77 66.68288.0274.0261.02109.817.29 69.85315.0300.0286.02309.818.96 73.03344.0328.0312.02522.720.68 76.20374.0356.0340.02742.122.48 82.55431.0411.0392.03251.826.78 88.90504.0480.0458.03761.531.25 95.25581.0554.0528.04303.535.71 101.60662.0632.0602.04897.140.18 A 603 98 3 NOTICE: This standard has either been superceded and replaced by a new version or discontinued. Contact ASTM International () for the latest information. ability of the wire to meet the requirements of Sections 6 and 7, two additional tests shall be made on samples of wire from the same coil or reel. If failure occurs in either of these tests, the wire shall be rejected. 12. Inspection 12.1 All tests and inspection shall be made at the place of manufacture unless otherwise specifi ed and shall be so con- ducted as not to interfere unnecessarily with the operation of the works. The manufacturer shall afford the inspector repre- senting the purchaser all reasonable facilities to satisfy the inspector that the material is being furnished in accordance with this specifi cation. When specifi ed, inspection may be waived, and certifi ed copies of test reports furnished. 13. Packaging 13.1 Structural wire rope shall be packaged in coils or on reels at the discretion of the manufacturer unless otherwise specifi ed. Wire rope shall be packaged in such a manner so that no permanent deformation of wires in the strand or strands in the wire rope will occur. 14. Keywords 14.1 steel wire; wire; wire rope; zinc-coated wire TABLE 3Properties of Multi-Class Zinc-Coated Steel Structural Wire Rope (Inch-Pound Units) Nominal Diameter, in. Minimum Breaking Strength in Tons of 2000 lb Approximate Gross Metallic Area, in.2 Approximate Weight/ft, lb Class A Coating Throughout Class B Coating Outer Wires Class A Coating Inner Wire Class C Coating Outer Wires Class A Coating Inner Wires 3/0.0650.24 7/0.0910.32 1/211.5190.42 9/1614.514.013.50.1470.53 5/818.017.416.80.1820.65 11/1621.520.820.00.2210.79 3/426.0680.95 13/1630.029.028.00.3111.10 7/835.033.832.60.3611.28 15/1640.038.637.30.4141.47 145.7711.67 1 1/857.855.853.90.5962.11 1 1/472.269.767.30.7452.64 1 3/887.884.881.80.9063.21 1 1/2104.0100.096.91.0763.82 1 5/8123.0120.0117.01.2704.51 1 3/4143.0140.0136.01.4705.24 1 7/8164.0160.0156.01.6906.03 2186.0182.0177.01.9206.85 2 1/8210.0205.0200.02.1707.73 2 1/4235.0230.0224.02.4208.66 2 3/8261.0255.0249.02.6909.61 2 1/2288.0281.0275.02.97010.60 2 5/8317.0310.0302.03.27011.62 2 3/4347.0339.0331.03.58012.74 2 7/8379.0372.0365.03.91013.90 3412.0405.0397.04.25015.11 3 1/4475.0466.0457.05.04018.00 3 1/2555.0545.0534.05.83021.00 3 3/4640.0628.0616.06.67024.00 4730.0717.0703.07.59027.00 A 603 98 4 NOTICE: This standard has either been superceded and replaced by a new version or discontinued. Contact ASTM International () for the latest information. TABLE 4Properties of Multi-Class Zinc-Coated Steel Structural Wire Rope (SI Units) Nominal Diameter, mm Minimum Breaking Strength in Metric Tons Approximate Gross Metallic Area, mm2 Approximate Weight/m, kg Class A Coating Throughout Class B Coating Outer Wires Class A Coating Inner Wires Class C Coating Outer Wires Class A Coating Inner Wire 9.541.90.36 11.118.07.77.458.70.48 12.7010.410.19.776.80.62 14.2913.212.712.294.80.79 15.8816.315.815.2117.40.97 17.4619.518.918.1142.61.18 19.0523.622.822.0172.91.41 20.6427.226.325.4200.71.64 22.2331.830.729.6232.91.90 23.8136.335.033.8267.12.19 25.4041.540.038.6303.92.48 28.5852.450.648.9384.53.14 31.7565.563.261.1480.73.93 34.9379.776.974.2584.64.78 38.1094.391.287.9694.25.68 41.28112.0109.0106.0819.46.71 44.45130.0127.0124.0948.47.80 47.63149.0145.0142.01090.48.97 50.80169.0165.0161.01238.810.19 53.98190.0186.0182.01400.111.50 57.15213.0208.0203.01561.412.89 60.33237.0231.0226.01735.614.30 63.50261.0255.0249.01916.215.77 66.68288.0281.0274.02109.817.29 69.85315.0308.0300.02309.818.96 73.03344.0338.0331.02522.720.68 76.20374.0367.0360.02742.122.48 82.55431.0423.0415.03251.826.78 88.90504.0494.0485.03761.531.25 92.25581.0570.0559.04303.535.71 101.60662.0650.0638.04897.140.18 TABLE 5Initial Settings for Determining Stress at 0.7 % Extension Nominal DiameterInitial StressInitial Setting of Extensometer, in./in. or mm/mm in.mmksiMPa 0.040 to 0.089, incl1.270 to 2.