ASTM B802 B802M-2010(2016) Standard Specification for Zinc&x2013 5&x2009 % Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Aluminum Conductors Steel Reinforced (ACSR)《刚增强型铝导线用.pdf

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1、Designation: B802/B802M 10 (Reapproved 2016)Standard Specification forZinc5 % Aluminum-Mischmetal Alloy-Coated Steel CoreWire for Aluminum Conductors, Steel Reinforced (ACSR)1This standard is issued under the fixed designation B802/B802M; the number immediately following the designation indicates th

2、e yearof 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 () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers round, zinc5 % aluminum-

3、mischmetal (Zn5AlMM) alloy-coated, steel core wire withthree classes of Zn5AlMM 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 1.27 to 4.82 mm, inclusive.1.3 The val

4、ues stated in either SI units or inch-pound unitsare to be regarded separately as standard. The values stated ineach system may not be exact equivalents; therefore, eachsystem shall be used independently of the other. Combiningvalues from the two systems may result in non-conformancewith the standar

5、d.2. Referenced Documents2.1 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:2A90/A90M Test Method for Weight Mass of Coating onIron and Steel Articles with Zinc or Zinc-Alloy CoatingsA370

6、Test Methods and Definitions for Mechanical Testingof Steel ProductsA751 Test Methods, Practices, and Terminology for Chemi-cal Analysis of Steel ProductsB193 Test Method for Resistivity of Electrical ConductorMaterialsB750 Specification for GALFANE47 Test Methods for Chemical Analysis of Zinc Die-C

7、asting Alloys (Withdrawn 1997)3E1277 Test Method for Analysis of Zinc-5 % Aluminum-Mischmetal Alloys by ICP Emission SpectrometryE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications2.3 Other Standard:GF-1 Standard Practice for Determination of Cerium and

8、Lanthanum Compositions in GalfanAlloy (5 %Al-0.04 %La-0.04 % Ce-Bal SHG Zn)43. Terminology3.1 Abbreviations:3.1.1 MMmischmetal.3.1.2 Zn5AlMMzinc5 % aluminum mischmetal.3.2 Definitions:3.2.1 lotunless otherwise specified in the contract ororder, a lot shall consist of all coils of wire of the samedia

9、meter and unit lengths submitted for inspection at the sametime.3.2.2 Product CodeDefines product coating type, coatingclass and strength grade. Two product codes for productproduced to this specification: Class A Zn5AlMM Coated =MA2; and Class C Zn5AlMM Coated = MC2.4. Classification4.1 The wire is

10、 furnished in two classes of coating, Class Aor Class C, as specified, in conformance with the requirementsof Section 10 and Table 1 or Table 2.5. Ordering Information5.1 Orders for material under this specification shall includethe following information:5.1.1 Quantity of each size,5.1.2 Wire diamet

11、er in inches or millimeters (Section 14),5.1.3 Product Code (see paragraphs 3.2.2 and 4.1),5.1.4 Certification, if required (Section 19),5.1.5 Test report, if required (Section 19), and1This specification is under the jurisdiction of ASTM Committee B01 onElectrical Conductors and is the direct respo

12、nsibility of Subcommittee B01.05 onConductors of Ferrous Metals.Current edition approved Oct. 1, 2016. Published October 2016. Originallyapproved in 1989. Last previous edition approved in 2010 as B802/B802M 10.DOI: 10.1520/B0802_B0802M-10R16.2For referenced ASTM standards, visit the ASTM website, w

13、ww.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from International Lead

14、 Zinc Research Organization (ILZRO), 1822NC Highway 54 East, Suite 120, Durham NC 27713, http:/www.ilzro.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States15.1.6 Package Size (Section 20).6. Materials and Manufacture6.1 The base meta

15、l shall be steel produced by the open-hearth, electric furnace, or basic oxygen process.6.2 The wire shall be cold drawn and coated withZn5AlMM alloy to produce the desired properties.7. Chemical Composition7.1 The steel shall conform to the requirements prescribedin Table 3.7.2 Chemical analysis of

16、 the steel shall be conducted inaccordance with Test Methods, Practices and TerminologyA751.7.3 The ingot form of zinc-5% aluminum-mischmetal alloyshall conform to Specification B750.7.3.1 For a two-step coating operation where the firstcoating is zinc (hot-dip galvanized or electrogalvanized), thef

17、inal bath may have an aluminum content of up to 7.2 %, toprevent depletion of the aluminum content of the bath.7.3.2 Method of AnalysisThe determination of chemicalcomposition shall be made in accordance with suitable chemi-cal (Test Methods E47 for Tin), ICP argon plasma spectromet-ric (Practice E1

18、277), or other methods. In case of dispute, theresults secured by Practice E1277 shall be the basis ofacceptance.7.3.3 Method of Coating Material AnalysisRefer to Speci-fication B750. In case of dispute, the results secured byPractice E1277 shall be the basis of acceptance.8. Tensile Test8.1 The Zn5

19、AlMM-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 A370, using the initial settings fordetermining stress at 1 % extension given in Table 6 or Table7 o

20、f 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 be performed by drawing between wo

21、od blocks or bysome other equally satisfactory means.9. Wrap Test9.1 The material, as represented by the test specimens, shallnot fracture when the Zn5AlMM alloy-coated wire iswrapped at a rate not exceeding 15 turns/min in a close helixof at least eight turns around a cylindrical mandrel with adiam

22、eter 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 coating test shall be conducted i

23、n accordance withTest Method A90/A90M.11. Adherence of Coating Test11.1 The Zn5AlMM alloy-coated wire shall be capable ofbeing wrapped in a close helix at a rate not exceeding 15turns/min around a cylindrical mandrel having a diameter asprescribed in Table 8 or Table 9, without cracking or flaking t

24、hecoating to such an extent that any Zn5AlMM alloy can beremoved by rubbing with the bare fingers.NOTE 1Loosening or detachment during the adhesion test ofsuperficial, small particles of Zn5AlMM alloy formed by mechanicalpolishing of the surface of the coated wire shall not be considered causefor re

25、jection.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.12.3 Welding equipment and procedure shall be such that itcan be demonstrated that the ultimate

26、 tensile strength of afinished wire specimen containing the welded section shall benot less than 96 % of the specified minimum stress at 1 %extension.TABLE 1 Zn-5Al-MM Alloy CoatingSpecified Diameter of Coated Wire,in.Area Density of Coating, min, oz/ft2of Uncoated Wire SurfaceClass A Class C0.0500

27、to 0.0599, incl 0.60 1.800.0600 to 0.0749, incl 0.65 1.950.0750 to 0.0899, incl 0.70 2.100.0900 to 0.1039, incl 0.75 2.250.1040 to 0.1199, incl 0.80 2.400.1200 to 0.1399, incl 0.85 2.550.1400 to 0.1799, incl 0.90 2.700.1800 to 0.1900, incl 1.00 3.00TABLE 2 Zn-5Al-MM Alloy Coating (Metric)Specified D

28、iameter of Coated Wire,mmArea Density of Coating, min,g/m2of Uncoated Wire SurfaceClass A Class C1.27 to 1.52, incl 183 5491.53 to 1.90, incl 198 5941.91 to 2.28, incl 214 6422.29 to 2.64, incl 229 6872.65 to 3.04, incl 244 7323.05 to 3.55, incl 259 7773.56 to 4.57, incl 274 8224.58 to 4.82, incl 30

29、5 915TABLE 3 Chemical RequirementsElement Composition, %Carbon 0.50 to 0.88Manganese 0.50 to 1.10Phosphorus, max 0.035Sulfur, max 0.045Silicon 0.10 to 0.35B802/B802M 10 (2016)212.4 A welded section shall not be required to meet thestress at 1 % extension, elongation, and wrap tests.13. Density and R

30、esistivity13.1 For the purpose of calculating mass per unit length,cross sections, etc, the density of Zn5AlMM alloy-coatedsteel wire at 20C shall be taken as 0.281 lb/in.3(7780 kg/m3).13.2 A maximum resistivity of Zn5AlMM alloy-coatedsteel wire is not guaranteed but a typical value of 0.19157mm2/m

31、may be used for purpose of calculation. For conver-sion to other units of conductivity or resistivity, refer to TestMethod B193.14. Dimensions, Mass, and Permissible Variations14.1 The specified diameter of the zinc-coated wire shall beexpressed in decimal fractions of an inch to four decimalplaces,

32、 or in millimeters to two decimal places.14.2 To determine the applicable tolerance range from Table10 or Table 11, round the specified diameter to the nearest0.001 in. (0.01 mm) in accordance with the rounding method ofPractice E29.14.3 Measure the largest and smallest diameter taken at thesame cro

33、ss section rounded to the nearest 0.001 in. (0.01 mm)in accordance with the rounding method of Practice E29.Calculate the average of the two measurements. The calculatedvalue shall not differ from the specified diameter by more thanthe applicable tolerance range shown in Table 10 or Table 11.15. Wor

34、kmanship, Finish, and Appearance15.1 The Zn5AlMM alloy coating shall be reasonablysmooth, continuous, of reasonably uniform thickness, and freeof imperfections not consistent with good commercial practice.16. Number of Tests and Retests16.1 One test specimen shall be taken from each 5000 lb or2500 k

35、g or fraction thereof in the inspection lot.TABLE 4 Tensile RequirementsSpecified Diameter, in.Stress at 1 % Extension, min, Ksi Ultimate Tensile Strength, min, Ksi Elongation in 10 in., min, %Class A Class C Class A Class C Class A Class C0.0500 to 0.0899, incl 190 170 210 190 3.0 3.00.0900 to 0.11

36、99, incl 185 165 205 185 3.5 3.00.1200 to 0.1399, incl 180 160 205 185 4.0 3.00.1400 to 0.1900, incl 170 155 200 180 4.0 4.0TABLE 5 Tensile Requirements (Metric)Specified Diameter, mmStress at 1 % Extension, min, MPaUltimate Tensile Strength, min,MPaElongation in 250 mm, min, %Class A Class C Class

37、A Class C Class A Class C1.27 to 2.28, incl 1310 1170 1450 1310 3.0 3.02.29 to 3.04, incl 1280 1140 1410 1280 3.5 3.03.05 to 3.55, incl 1240 1100 1410 1280 4.0 3.03.56 to 4.82, incl 1170 1070 1380 1240 4.0 4.0TABLE 6 Initial Settings for Determining Stress at 1 % ExtensionSpecified Diameter, in.Init

38、ial 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 (0.10 % extension)0.1200 to 0.1900, incl 42 0.0015 (0.15 % extension)TABLE 7 Initial Settings for Determining Stress at 1 % Extension(Metric)Specified Diameter, mmI

39、nitial Stress,MPaInitial Setting of Extensometer,mm/mm1.27 to 2.28, incl 100 0.0005 (0.05 % extension)2.29 to 3.04, incl 190 0.0010 (0.10 % extension)3.05 to 4.82, incl 290 0.0015 (0.15 % extension)TABLE 8 Mandrel Size for Adherence TestSpecified Wire Diameter, in.Ratio of Mandrel Diameterto Wire Di

40、ameter0.0500 to 0.0899, incl 30.0900 to 0.1399, incl 40.1400 to 0.1900, incl 5TABLE 9 Mandrel Size for Adherence Test (Metric)Specified Wire Diameter, mmRatio of Mandrel Diameterto Wire Diameter1.27 to 2.28, incl 32.29 to 3.04, incl 43.05 to 4.82, incl 5TABLE 10 Permissible Variations in Diameter of

41、 Zn-5Al-MM Alloy-Coated Steel WireNOTE 1It is recognized that the surface of Zn-5Al-MM alloy coatings,particularly those produced by hot-dip coating, are not perfectly smoothand devoid of irregularities. If the tolerances shown in the table are rigidlyapplied to such irregularities that are inherent

42、 to the product, unjustifiedrejections of wire that would actually be satisfactory for use could occur.It is intended that these tolerances be used in gaging the wires where thereis a minimum of such diameter irregularities due to galvanizing.Specified Diameter, in.Permissible Variation, in.Plus Min

43、us0.0500 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 0.003B802/B802M 10 (2016)316.2 Each specimen shall be tested for compliance withSections 8, 9, 11, and 14. At least half of the specimens shallbe tested for complianc

44、e 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 be sampled and tested fo

45、r 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 test specimens from every

46、 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 purchaseorder, the manufacturer shall be responsible for the perfor-mance of all inspection and test requirement specified.17.2 All inspe

47、ctions 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 afford the inspector represent-ing the purchaser all reasonable manufacturers facilities tosatisfy him that t

48、he 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. Rejection should be re-ported to the producer or the supplier promptly and in writing.In case of dissatisfact

49、ion 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 certification shall be furnished to thepurchaser showing that the material was manufactured,sampled, tested, and inspected in accordance with thisspecification, and has been found to meet the requirements.When specified in the purchase order or contract, a report ofthe test results shall be furnished.20. Packaging and Package Marking20.1 The unit l