ASTM B802 B802M-2002 Standard Specification for Zinc-5% Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Aluminum Conductors Steel Reinforced (ACSR).pdf

1、Designation: B 802/B 802M 02Standard Specification forZinc5 % Aluminum-Mischmetal Alloy-Coated Steel CoreWire for Aluminum Conductors, Steel Reinforced (ACSR)1This standard is issued under the fixed designation B 802/B 802M; the number immediately following the designation indicates the yearof origi

2、nal 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. Scope1.1 This specification covers round, zinc5 % aluminum-mischmetal (Z

3、n5A1MM) alloy-coated, steel core wire withthree classes of Zn5A1MM coating used for mechanicalreinforcement in the manufacture of aluminum conductors,steel reinforced (ACSR).1.2 This specification covers wire of diameter from 0.0500to 0.1900 in. or 1.60 to 4.80 mm, inclusive.1.3 The values stated in

4、 inch-pound units or SI units are tobe regarded separately as standard. The values in each systemare not exact equivalents; therefore, each system shall be usedindependently of the other. Combining values from the twosystems may result in nonconformance with this specification.2. Referenced Document

5、s2.1 The following documents of the issue in effect on dateof material purchase form a part of this specification to theextent referenced herein.2.2 ASTM Standards:A 90/A 90M Test Method for Weight Mass of Coating onIron and Steel Articles with Zinc or Zinc-Alloy Coatings2A 370 Test Methods and Defi

6、nitions for Mechanical Testingof Steel Products3A 751 Test Methods, Practices and Terminology for Chemi-cal Analysis of Steel Products3B 193 Test Method for Resistivity of Electrical ConductorMaterials4B 750 Specification for Zinc5 % Aluminum-MischmetalAlloy in Ingot Form for Hot-Dip Coatings5E 47 T

7、est Methods for Chemical Analysis of Zinc Die-Casting Alloys6E 1277 Practice for Chemical Analysis of Zinc-5Aluminum-Mischmetal Alloy by ICP Emission Spectrom-etry62.3 Other Standard:GF-1 Standard Practice for Determination of Cerium andLanthanum Compositions in Galfan Alloy (5 % Al-0.04 %La-0.04 %

8、Ce-Bal SHG Zn)73. Terminology3.1 Abbreviations: Abbreviations:3.1.1 MMmischmetal.3.1.2 Zn5A1MMzinc5 % aluminum mischmetal.3.2 Definition:3.2.1 lotunless otherwise specified in the contract ororder, a lot shall consist of all coils of wire of the samediameter and unit lengths submitted for inspection

9、 at the sametime.4. Classification4.1 The wire is furnished in three classes of coating, ClassA, Class B, or Class C, as specified, in conformance with therequirements of Section 10 and Table 1 or Table 2.5. Ordering Information5.1 Orders for material under this specification shall includethe follow

10、ing information:5.1.1 Quantity of each size,5.1.2 Wire diameter in inches or millimetres (Section 14),5.1.3 Class of coating (see 4.1),5.1.4 Certification, if required (Section 19),5.1.5 Test report, if required (Section 19), and5.1.6 Package Size (Section 20).6. Materials and Manufacture6.1 The bas

11、e metal shall be steel produced by the open-hearth, electric furnace, or basic oxygen process.6.2 The wire shall be cold drawn and coated withZn5A1MM alloy to produce the desired properties.7. Chemical Composition7.1 The steel shall conform to the requirements prescribedin Table 3.7.2 Chemical analy

12、sis of the steel shall be conducted in1This specification is under the jurisdiction of ASTM Committee B01 onElectrical Conductors and is the direct responsibility of Subcommittee B01.05 onConductors of Ferrous Metals.Current edition approved Oct. 10, 2002. Published November 2002. Originallypublishe

13、d as B 802 89. Last previous edition B 802 98.2Annual Book of ASTM Standards, Vol 01.06.3Annual Book of ASTM Standards, Vol 01.03.4Annual Book of ASTM Standards, Vol 02.03.5Annual Book of ASTM Standards, Vol 02.04.6Annual Book of ASTM Standards, Vol 03.05.7Available from International Lead Zinc Rese

14、arch Organization, 2525 MeridianParkway, P.O. Box 12036, Research Triangle Park, NC 27709-2036.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.accordance with Test Methods, Practices and TerminologyA 751.7.3 The ingot form of zinc-5%

15、 aluminum-mischmetal alloyshall conform to Specification B 750.7.3.1 For a two-step coating operation where the firstcoating is zinc (hot-dip galvanized or electrogalvanized), thefinal bath may have an aluminum content of up to 7.2 %, toprevent depletion of the aluminum content of the bath.7.3.2 Met

16、hod of AnalysisThe determination of chemicalcomposition shall be made in accordance with suitable chemi-cal (Test Methods E 47 for Tin), ICP argon plasma spectromet-ric (Practice E 1277), or other methods. In case of dispute, theresults secured by Practice E 1277 shall be the basis ofacceptance.7.3.

17、3 A standard practice of X-ray fluorescence spectrom-etry for determination of cerium and lanthanum in aZn5A1MM alloy has been established by the InternationalLead Zinc Research Organization (Standard Practice GF-1). Incase of dispute, the results secured by Practice E 1277 shall bethe basis of acce

18、ptance.8. Tensile Test8.1 The Zn5A1MM-coated steel core wire shall conformto the tensile and elongation requirements prescribed in Table4 or Table 5.8.2 Tensile tests shall be conducted in accordance with TestMethods and Definitions A 370, using the initial settings fordetermining stress at 1 % exte

19、nsion given in Table 6 or Table7 of this specification.8.3 Test SpecimensThe test specimens shall be free ofbends or kinks other than the curvature resulting from the usualcoiling operations. Any hand straightening necessary to permitinsertion of the specimen in the jaws of the testing machineshall

20、be performed by drawing between wood blocks or bysome other equally satisfactory means.9. Wrap Test9.1 The material, as represented by the test specimens, shallnot fracture when the Zn5A1MM alloy-coated wire iswrapped at a rate not exceeding 15 turns/min in a close helixof at least eight turns aroun

21、d a cylindrical mandrel with adiameter equal to two times the specified diameter of the wireunder test, 65%.10. Coating Test10.1 The material, as represented by the test specimens,shall conform to the coating requirements of Table 1 or Table2, for the diameter and class of coating specified.10.2 The

22、 coating test shall be conducted in accordance withTest Method A 90/A 90M.11. Adherence of Coating Test11.1 The Zn5A1MM alloy-coated wire shall be capableof being wrapped in a close helix at a rate not exceeding 15turns/min around a cylindrical mandrel having a diameter asprescribed in Table 8 or Ta

23、ble 9, without cracking or flaking thecoating to such an extent that any Zn5A1MM alloy can beremoved by rubbing with the bare fingers.NOTE 1Loosening or detachment during the adhesion test of super-ficial, small particles of Zn5A1MM alloy formed by mechanicalpolishing of the surface of the coated wi

24、re shall not be considered causefor rejection.12. Joints12.1 No joints shall be made in the finished wire.12.2 Joints may be made at any stage of processing prior tofinal cold drawing by the electric butt-weld or flash orflash-welding process.TABLE 1 Zn-5A1-MM Alloy CoatingSpecified Diameter of Coat

25、ed Wire,in.Area Density of Coating, min, oz/ft2ofUncoated Wire SurfaceClass A Class B Class C0.0500 to 0.0599, incl 0.60 1.20 1.800.0600 to 0.0749, incl 0.65 1.30 1.950.0750 to 0.0899, incl 0.70 1.40 2.100.0900 to 0.1039, incl 0.75 1.50 2.250.1040 to 0.1199, incl 0.80 1.60 2.400.1200 to 0.1399, incl

26、 0.85 1.70 2.550.1400 to 0.1799, incl 0.90 1.80 2.700.1800 to 0.1900, incl 1.00 2.00 3.00TABLE 2 Zn-5A1-MM Alloy CoatingSpecified Diameter of Coated Wire,mmArea Density of Coating, min, g/m2ofUncoated Wire SurfaceClass A Class B Class C1.60 to 1.90, incl 210 420 630Over 1.90 to 2.30, incl 220 440 66

27、0Over 2.30 to 2.70, incl 230 460 690Over 2.70 to 3.10, incl 240 480 720Over 3.10 to 3.50, incl 260 520 780Over 3.50 to 3.90, incl 270 540 810Over 3.90 to 4.50, incl 275 550 825Over 4.50 to 4.80, incl 300 600 900TABLE 3 Chemical RequirementsElement Composition, %Carbon 0.50 to 0.85Manganese 0.50 to 1

28、.10Phosphorus, max 0.035Sulfur, max 0.045Silicon 0.10 to 0.35TABLE 4 Tensile RequirementsSpecified Diameter, in.Stress at 1 % Extension, min, Ksi Ultimate Tensile Strength, min, Ksi Elongation in 10 in., min, %Class A Class B Class C Class A Class B Class C Class A Class B Class C0.0500 to 0.0899, i

29、ncl 190 180 170 210 200 190 3.0 3.0 3.00.0900 to 0.1199, incl 185 175 165 205 195 185 3.5 3.0 3.00.1200 to 0.1399, incl 180 170 160 205 195 185 4.0 3.0 3.00.1400 to 0.1900, incl 170 160 155 200 185 180 4.0 4.0 4.0B 802/B 802M 02212.3 Welding equipment and procedure shall be such that itcan be demons

30、trated that the ultimate tensile strength of afinished wire specimen containing the welded section shall benot less than 96 % of the specified minimum stress at 1 %extension.12.4 A welded section shall not be required to meet thestress at 1 % extension, elongation, and wrap tests.13. Density and Res

31、istivity13.1 For the purpose of calculating mass per unit length,cross sections, etc, the density of Zn5A1MM alloy-coatedsteel wire at 20C shall be taken as 0.281 lb/in.3(7780 kg/m3).13.2 A maximum resistivity of Zn5A1MM alloy-coatedsteel wire is not guaranteed but a typical value of 0.19157Vmm2/m m

32、ay be used for purpose of calculation. For conver-sion to other units of conductivity or resistivity, refer to TestMethod B 193.14. Dimensions, Mass, and Permissible Variations14.1 The specified diameter shall be expressed in decimalfractions of an inch to four decimal places or in millimetres andde

33、cimal fractions of a millimetre to two decimal places.14.2 For diameter measurements and diameter tolerances,specified diameters shall be rounded to the closest 0.0005 in. or0.01 mm.14.3 Determine the greatest and least diameter each to thenearest 0.001 in. or 0.01 mm, at the same cross section. The

34、average of these two diameters shall not differ from thespecified diameter by more than the tolerances shown in Table10 or Table 11.15. Workmanship, Finish, and Appearance15.1 The Zn5A1MM alloy coating shall be reasonablysmooth, continuous, of reasonably uniform thickness, and freeof imperfections n

35、ot consistent with good commercial practice.16. Number of Tests and Retests16.1 One test specimen shall be taken from each 5000 lb or2500 kg or fraction thereof in the inspection lot.16.2 Each specimen shall be tested for compliance withSections 8, 9, 11, and 14. At least half of the specimens shall

36、be tested for compliance with Section 10.16.3 Should one or more of the test specimens fail any ofthe tests specified, the nonconforming coil or coils may beremoved and the balance of the lot subjected to retests. Forretest purposes, two additional coils for each 5000 lb or 2500kg in the lot shall b

37、e sampled and tested for the property inwhich the original sample failed to comply.16.4 Should any of the retest specimens fail to meet theproperties specified, the lot represented by the test specimensshall be rejected.16.5 Instead of rejecting the entire lot as provided in 16.4,the producer may te

38、st specimens from every coil in the lot forthe property in which failure occurred and reject only thenonconforming coils.17. Inspection17.1 Unless otherwise specified in the contract or purchaseTABLE 5 Tensile RequirementsSpecified Diameter, in.Stress at 1 % Extension, min, MPa Ultimate Tensile Stre

39、ngth, min, MPa Elongation in 250 mm, min, %Class A Class B Class C Class A Class B Class C Class A Class B Class C1.60 to 2.30, incl 1310 1240 1170 1450 1380 1310 3.0 3.0 3.0Over 2.30 to 3.05, incl 1280 1210 1140 1410 1340 1280 3.5 3.0 3.0Over 3.05 to 3.60, incl 1240 1170 1100 1410 1340 1280 4.0 3.0

40、 3.0Over 3.60 to 4.80, incl 1170 1100 1070 1380 1280 1240 4.0 4.0 4.0TABLE 6 Initial Settings for Determining Stress at 1 % ExtensionSpecified Diameter, in.Initial Stress,KsiInitial Setting of Extensometer,in./in.0.0500 to 0.0899,incl 14 0.0005 (0.05 % extension)0.0900 to 0.1199, incl 28 0.0010 (0.1

41、0 % extension)0.1200 to 0.1900, incl 42 0.0015 (0.15 % extension)TABLE 7 Initial Settings for Determining Stress at 1 % ExtensionSpecified Diameter, mmInitial Stress,MPaInitial Setting of Extensometer,mm/mm1.60 to 2.30, incl 100 0.0005 (0.05 % extension)Over 2.30 to 3.05, incl 190 0.0010 (0.10 % ext

42、ension)Over 3.05 to 4.80, incl 290 0.0015 (0.15 % extension)TABLE 8 Mandrel Size for Adherence TestSpecified Wire Diameter, in.Ratio of Mandrel Diameterto Wire Diameter0.0500 to 0.0899, incl 30.0900 to 0.1399, incl 40.1400 to 0.1900, incl 5TABLE 9 Mandrel Size for Adherence TestSpecified Wire Diamet

43、er, mmRatio of Mandrel Diameterto Wire Diameter1.60 to 2.30, incl 3Over 2.30 to 3.05, incl 4Over 3.05 to 4.80, incl 5TABLE 10 Permissible Variations in Diameter of Zn-5A1-MMAlloy-Coated Steel WireNOTE 1It is recognized that the surface of Zn-5A1-MM alloycoatings, particularly those produced by hot-d

44、ip coating, are not perfectlysmooth and devoid of irregularities. If the tolerances shown in the tableare rigidly applied to such irregularities that are inherent to the product,unjustified rejections of wire that would actually be satisfactory for usecould occur. Therefore, it is intended that thes

45、e tolerances be used ingaging the uniform areas of the coated wire.Specified Diameter, in.Permissible Variation, in.Plus Minus0.0500 to 0.0749, incl 0.0015 0.0010.0750 to 0.1199, incl 0.002 0.0020.1200 to 0.1399, incl 0.003 0.0020.1400 to 0.1900, incl 0.004 0.003B 802/B 802M 023order, the manufactur

46、er shall be responsible for the perfor-mance of all inspection and test requirement specified.17.2 All inspections and tests shall be made at the place ofmanufacture unless otherwise especially agreed upon by themanufacturer and the purchaser at the time of the purchase.17.3 The manufacturer shall a

47、fford the inspector represent-ing the purchaser all reasonable manufacturers facilities tosatisfy him that the material is being furnished in accordancewith this specification.18. Rejection and Rehearing18.1 Material that fails to conform to the requirements ofthis specification shall be rejected. R

48、ejection should be re-ported to the producer or the supplier promptly and in writing.In case of dissatisfaction with the results of the test, theproducer or the supplier may make claim for a rehearing.19. Certification19.1 When specified in the purchase order or contract, aproducers or suppliers cer

49、tification shall be furnished to thepurchaser showing that the material was manufactured,sampled, tested, and inspected in accordance with this speci-fication, and has been found to meet the requirements. Whenspecified in the purchase order or contract, a report of the testresults shall be furnished.20. Packaging and Package Marking20.1 The unit lengths shall be as specified in the contract ororder. Length tolerances shall be 62 % unless otherwisespecified by the purchaser.20.2 Package dimensions, kind of package (coils, reels, orreelless