1、Designation: B 803 02Standard Specification forHigh-Strength Zinc5 % Aluminum-Mischmetal Alloy-CoatedSteel Core Wire for Aluminum and Aluminum-AlloyConductors, Steel Reinforced1This standard is issued under the fixed designation B 803; the number immediately following the designation indicates the y
2、ear oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers round, high strength, zinc
3、5 %aluminum-mischmetal (Zn5A1MM) alloy-coated, steel corewire with Class A Zn5A1MM alloy coating used formechanical reinforcement in the manufacture of special alumi-num and aluminum-alloy conductors, steel reinforced.1.2 This specification covers wire of diameter from 0.0500to 0.1900 in. inclusive.
4、1.3 The values stated in 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 specificatio
5、n.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:A 90/A90M Test Method for Weight Mass of Coating onIron and Steel Articles with Zinc or Zinc-Alloy Coatings2A 37
6、0 Test Methods and Definitions for Mechanical Testingof Steel Products3A 751 Test Methods, Practices, and Terminology forChemical Analysis of Steel Products3B 193 Test Method for Resistivity of Electrical ConductorMaterials4B 750 Specification for Zinc5 % Aluminum-MischmetalAlloy in Ingot Form for H
7、ot-Dip Coatings5E 47 Test Methods for Chemical Analysis of Zinc Die-Casting Alloys6E 1277 Practice for Chemical Analysis of Zinc-5Aluminum-Mischmetal Alloys by ICP Emission Spectrom-etry62.3 Other Standard:GF-1 Standard Practice for Determination of Cerium andLanthanum Compositions in Galfan Alloy (
8、5 % Al-0.04 %La-0.04 % Ce-Bal SHG Zn)73. Terminology3.1 Abbreviations:Abbreviations:3.1.1 MMmischmetal3.1.2 Zn5A1MMzinc5 % aluminum mischmetal3.2 Definitions: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 sub
9、mitted for inspection at the sametime.4. Ordering Information4.1 Orders for material under this specification shall includethe following information:4.1.1 Quantity of each size,4.1.2 Wire diameter in inches (Section 13),4.1.3 Certification, if required (Section 18),4.1.4 Test report, if required (Se
10、ction 18), and4.1.5 Package Size (Section 19).5. Materials and Manufacture5.1 The base metal shall be steel produced by the open-hearth, electric furnace, or basic oxygen process.5.2 The wire shall be cold drawn and coated withZn5A1MM alloy to produce the desired properties.6. Chemical Composition6.
11、1 The steel shall conform to the requirements prescribedin Table 1.6.2 Chemical analysis of the steel shall be conducted inaccordance with Test Methods, Practices, and TerminologyA 751.6.3 The ingot form of zinc-5 % aluminum-mischmetal alloy1This specification is under the jurisdiction of ASTM Commi
12、ttee 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. Originallypublished as B 803 89. Last previous edition B 803 98.2Annual Book of ASTM Standards, Vol 01.06.3Annual B
13、ook 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 Research Organization, 2525 MeridianParkway, P.O. Box 12036, Research Triangle Park, NC 27709-20361Co
14、pyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.shall conform to Specification B 750.6.3.1 For a two-step coating operation where the firstcoating is zinc (hot-dip galvanized or electrogalvanized), thefinal bath may have an aluminum con
15、tent of up to 7.2 %, toprevent depletion of the aluminum content of the bath.6.3.2 Method of AnalysisThe determination of chemicalcomposition shall be made in accordance with suitable chemi-cal (Test Methods E 47 for Tin), ICP Argon Plasma Spectro-metric (Practice E 1277), or other methods. In case
16、of dispute,the results secured by Practice E 1277 shall be the basis ofacceptance.6.3.3 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
17、). Incase of dispute, the results secured by Practice E 1277 shall bethe basis of acceptance.7. Tensile Test7.1 The Zn5A1MM-coated steel core wire shall conformto the tensile and elongation requirements prescribed in Table2.7.2 Tensile tests shall be conducted in accordance with TestMethods and Defi
18、nitions A 370, using the initial settings fordetermining stress at 1 % extension given in Table 3 of thisspecification.7.3 Test SpecimensThe test specimens shall be free ofbends or kinks other than the curvature resulting from the usualcoiling operations. Any hand straightening necessary to permitin
19、sertion of the specimen in the jaws of the testing machineshall be performed by drawing between wood blocks or bysome other equally satisfactory means.8. Wrap Test8.1 The material, as represented by the test specimens, shallnot fracture when the Zn5A1MM alloy-coated wire iswrapped at a rate not exce
20、eding 15 turns/min in a close helixof at least eight turns around a cylindrical mandrel with adiameter equal to three times the specified diameter of the wireunder test, 65%.9. Coating Test9.1 The Zn5A1MM alloy-coated wire shall conform tothe coating requirements prescribed in Table 4.9.2 The coatin
21、g test shall be conducted in accordance withTest Method A 90/A 90M.10. Adherence of Coating Test10.1 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 5, without cra
22、cking or flaking the coating tosuch an extent that any Zn5A1MM alloy can be removed byrubbing 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 wire shall not be co
23、nsidered causefor rejection.11. Joints11.1 No joints shall be made in the finished wire.11.2 Joints may be made at any stage of processing prior tofinal cold drawing by the electric butt-weld or flash orflash-welding process.11.3 Welding equipment and procedure shall be such that itcan be demonstrat
24、ed 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.11.4 A welded section shall not be required to meet thestress at 1 % extension, elongation, and wrap tests.12. Density and Resisti
25、vity12.1 For the purpose of calculating mass per unit length,cross sections, and so forth, the density of Zn5A1MMalloy-coated steel wire at 20C shall be taken as 0.281lb/in.3(7780 kg/m3).12.2 A maximum resistivity of Zn5A1MM alloy-coatedsteel wire is not guaranteed but a typical value of 0.19157Vmm2
26、/m may be used for purpose of calculation. For conver-sion to other units of conductivity or resistivity, refer to TestMethod B 193.13. Dimensions and Permissible Variations13.1 The specified diameter of the Zn5A1MM alloy-coated wire shall be expressed in decimal fractions of an inchto four decimal
27、places, or in millimetres to three decimalplaces.13.2 For diameter measurements and diameter tolerance,specified diameters shall be rounded to the closest 0.0005 in.(0.01 mm).13.3 The average of the largest and smallest diameterreadings, each to the nearest 0.001 in. (0.025 mm) taken at theTABLE 1 C
28、hemical RequirementsElement Composition, %Carbon 0.50 to 0.88Manganese 0.50 to 1.30Phosphorus, max 0.035Sulfur, max 0.045Silicon 0.10 to 0.35TABLE 2 Tensile RequirementsSpecified DiameterStress at 1 % Extension, min Ultimate Tensile Strength, min Elongation in 10in. or 250 mm,min %in. mm ksi MPa ksi
29、 MPa0.0500 to 0.0899, incl 1.270 to 2.283, incl 210 1450 235 1620 3.00.0900 to 0.1199, incl 2.286 to 3.045, incl 205 1410 230 1590 3.00.1200 to 0.1399, incl 3.048 to 3.553, incl 200 1380 225 1550 3.50.1400 to 0.1900, incl 3.556 to 4.823, incl 195 1340 220 1520 3.5B803022same cross section, shall not
30、 differ from the specified diameterby more than the tolerances shown in Table 6.14. Workmanship, Finish, and Appearance14.1 The Zn5A1MM alloy coating shall be reasonablysmooth, continuous, of reasonably uniform thickness and freeof imperfections not consistent with good commercial practice.15. Numbe
31、r of Tests and Retests15.1 One test specimen shall be taken from each 5000 lb(2500 kg) or fraction thereof in the inspection lot.15.2 Each specimen shall be tested for compliance withSections 7, 8, 10, and 13. At least half of the specimens shallbe tested for compliance with Section 9.15.3 Should on
32、e 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 lbs (2500kg) in the lot shall be sampled and tested for the property inwhich the origi
33、nal sample failed to comply.15.4 Should any of the retest specimens fail to meet theproperties specified, the lot represented by the test specimensshall be rejected.15.5 Instead of rejecting the entire lot as provided in 15.4,the producer may test specimens from every coil in the lot forthe property
34、 in which failure occurred, and reject only thenonconforming coils.16. Inspection16.1 Unless otherwise specified in the contract or purchaseorder, the manufacturer shall be responsible for the perfor-mance of all inspection and test requirement specified.16.2 All inspections and tests shall be made
35、at the place ofmanufacture unless otherwise especially agreed to by themanufacturer and the purchaser at the time of the purchase.16.3 The manufacturer shall afford the inspector represent-ing the purchaser all reasonable manufacturers facilities tosatisfy him that the material is being furnished in
36、 accordancewith this specification.17. Rejection and Rehearing17.1 Material that fails to conform to the requirements ofthis specification shall be rejected. Rejection should be re-ported to the producer or supplier promptly and in writing. Incase of dissatisfaction with the results of the test, the
37、 produceror supplier may make claim for a rehearing.18. Certification18.1 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 this speci
38、-fication and has been found to meet the requirements. Whenspecified in the purchase order or contract, a report of the testresults shall be furnished.TABLE 3 Initial Settings for Determining Stress at 1 % ExtensionSpecified Diameter Initial Stress Initial Setting of Extensometer,in./in. or mm/mmin.
39、 mm ksi MPa0.0500 to 0.0899, incl 1.270 to 2.283, incl 14 97 0.0005 (0.05 % Extension)0.0900 to 0.1199, incl 2.286 to 3.045, incl 28 193 0.0010 (0.10 % Extension)0.1200 to 0.1900, incl 3.048 to 4.823, incl 42 290 0.0015 (0.15 % Extension)TABLE 4 Zn5A1MM Alloy CoatingSpecified Diameter of Coated Wire
40、Area Density ofZn5A1MM Alloy Coatingmin of Uncoated WireSurfacein. mm oz/ft2g/m20.0500 to 0.0599, incl 1.270 to 1.521, incl 0.60 1830.0600 to 0.0749, incl 1.524 to 1.902, incl 0.65 1980.0750 to 0.0899, incl 1.905 to 2.283, incl 0.70 2140.0900 to 0.1039, incl 2.286 to 2.639, incl 0.75 2290.1040 to 0.
41、1199, incl 2.642 to 3.045, incl 0.80 2440.1200 to 0.1399, incl 3.048 to 3.553, incl 0.85 2590.1400 to 0.1799, incl 3.556 to 4.569, incl 0.90 2740.1800 to 0.1900, incl 4.572 to 4.823, incl 1.00 305TABLE 5 Mandrel Size for Adherence TestSpecified Wire DiameterRatio ofMandrelDiameter toWire Diameterin.
42、 mm0.0500 to 0.0899, incl 1.270 to 2.283, incl 30.0900 to 0.1399, incl 2.286 to 3.553, incl 40.1400 to 0.1900, incl 3.556 to 4.823, incl 5TABLE 6 Permissible Variations in Diameter of Zn5A1MM Alloy-Coated Steel WireNOTE 1 It is recognized that the surface of coatings, particularly those produced by
43、the hot-dip method of coating, are not perfectly smooth anddevoid of irregularities. If the tolerances shown in the table are rigidly applied to such irregularities that are inherent to the product, unjustified rejectionsof wire that would actually be satisfactory for use could occur. It is intended
44、 that these tolerances be used in gaging the wires where there is a minimumof such diameter irregularities due to hot dip coating.Specified Diameter Permissible Variationin. mmin. mmPlus Minus Plus Minus0.0500 to 0.0749, incl 1.270 to 1.902, incl 0.0015 0.001 0.038 0.0250.0750 to 0.1199, incl 1.905
45、to 3.045, incl 0.002 0.002 0.051 0.0510.1200 to 0.1399, incl 3.048 to 3.553, incl 0.003 0.002 0.076 0.0510.1400 to 0.1900, incl 3.556 to 4.823, incl 0.004 0.003 0.102 0.076B80302319. Packaging and Package Marking19.1 The unit lengths shall be as specified in the contract ororder. Length tolerances s
46、hall be 62 % unless otherwisespecified by the purchaser.19.2 Package dimensions, kind of package (coils, reels, orreelless coils), and quantity of wire in each package shall beagreed upon by the manufacturer and the purchaser.19.3 A durable tag shall be securely attached to eachpackage showing the n
47、ominal diameter of wire, length, ap-proximate weight, purchasers order number, and manufactur-ers name.19.4 The starting end shall be identified.19.5 In case there is more than one piece in a package, thelength and position of each piece shall be shown on the tag.20. Keywords20.1 coated steel wire;
48、high strength steel wire; steel corewire; steel wire; zinc-5 % aluminum-mischmetal alloy-coatedsteel wireASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that
49、 determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of the
