1、Designation: B559 12 (Reapproved 2017)Standard Specification forNickel-Coated, Copper-Clad Steel Wire for ElectronicApplication1This standard is issued under the fixed designation B559; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revisio
2、n, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope1.1 This specificatio
3、n covers nickel-coated, round, copper-clad steel wire for electronic application.1.2 Nickel coatings in mass percentages of the total mass ofthe coated wire are as follows: 2, 4, 7, 10, and 27 %.Nickel-coated wire having different minimum mass percent-ages of nickel may be obtained by mutual agreeme
4、nt betweenthe manufacturer and the purchaser. For information purposes,the thickness of coating in microinches provided by thepercentages listed above is shown in Table 1.1.3 Four classes of nickel-coated, copper-clad steel wire arecovered as follows:1.3.1 Class N30HSNominal 30 % conductivity, hardd
5、rawn.1.3.2 Class N30ANominal 30 % conductivity, annealed.1.3.3 Class N40HSNominal 40 % conductivity, harddrawn.1.3.4 Class N40ANominal 40 % conductivity, annealed.1.4 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to S
6、I units that are provided for information onlyand are not considered standard.1.4.1 ExceptionThe SI values for resistivity are to beregarded as standard.1.5 The following safety hazards caveat pertains only to thetest method described in this specification. This standard doesnot purport to address a
7、ll of the safety concerns, if any,associated with its use. It is the responsibility of the user of thisstandard to establish appropriate safety and health practicesand determine the applicability of regulatory limitations priorto use. (WarningConsideration should be given to toxicityand flammability
8、 when selecting solvent cleaners.)1.6 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade
9、 Organization TechnicalBarriers to Trade (TBT) Committee.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:2B193 Test Method for Resistivity of Electrical Conductor
10、MaterialsB258 Specification for Nominal Diameters and Cross-SectionalAreas ofAWG Sizes of Solid Round Wires Usedas Electrical ConductorsB452 Specification for Copper-Clad Steel Wire for Elec-tronic ApplicationE75 Test Methods for Chemical Analysis of Copper-Nickeland Copper-Nickel-Zinc Alloys (Withd
11、rawn 2010)32.3 American Chemical Society:4Standard Reagents Tests2.4 NIST Standard:5NBS Handbook 100 Copper Wire Tables3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 lotany amount of wire of one class and size pre-sented for acceptance at one time, such amount, however, notto
12、 exceed 10 000 lb (4500 kg) (Note 1).1This specification is under the jurisdiction of ASTM Committee B01 onElectrical Conductors and is the direct responsibility of Subcommittee B01.06 onBi-Metallic Conductors.Current edition approved April 1, 2017. Published April 2017. Originallyapproved in 1972.
13、Last previous edition approved in 2012 as B559 12. DOI:10.1520/B0559-12R17.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe
14、 ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.4Reagent Chemicals, American Chemical Society Specifications, AmericanChemical Society, Washington, DC. For suggestions on the testing of reagents notlisted by the American Chemical Society, see Analar
15、Standards for LaboratoryChemicals, BDH Ltd., Poole, Dorset, U.K., and the United States Pharmacopeiaand National Formulary, U.S. Pharmaceutical Convention, Inc. (USPC), Rockville,MD.5Available from National Institute of Standards and Technology (NIST), 100Bureau Dr., Stop 1070, Gaithersburg, MD 2089
16、9-1070, http:/www.nist.gov.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles
17、for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.1NOTE 1Alot should comprise material taken from a product regularlymeeting the requirements of this specification. Inspection of individuallots
18、 of less than 500 lb (230 kg) of wire cannot be justified economically.For small lots of 500 lb (230 kg) or less, the purchaser may agree to themanufacturers regular inspection of the product as a whole as evidence ofacceptability of such small lots.3.1.2 samplea quantity of production units (coils,
19、 reels,etc.) selected at random from the lot for the purpose ofdetermining conformance of the lot to the requirements of thisspecification.3.1.3 specimena length of wire removed for test purposesfrom any individual production unit of the sample.4. Ordering Information4.1 Orders for material under th
20、is specification shall includethe following information:4.1.1 Quantity of each size.4.1.2 Wire size (see Section 7 and Table 1).4.1.3 Class of basis wire (see 1.3).4.1.4 Mass percentage of nickel coating (see 1.2 and Table1).4.1.5 Package size (see 14.2 and Section 14). Packaginginspection, if requi
21、red (see 9.1.3).4.1.6 Special package marking, if required.4.1.7 Place of inspection (see 13.1).5. Materials and Manufacture5.1 The basis material shall consist of copper-clad steel wireconforming to the product description, quality and specifica-tion requirements of Specification B452.5.2 The nicke
22、l-coated wire shall consist of the basis wirecoated with nickel (Note 2). The quality of the nickel-coatedwire shall be such that the finished product meets the propertiesand requirements in this specification.NOTE 2Nickel on copper-clad steel wire provides a protective coatingfor a prevention of ox
23、idation of the copper either during fabrication orservice.6. General Requirements6.1 Tensile strength and elongation of the nickel-coatedwire shall conform to the requirements of Specification B452for the applicable size and class of copper-clad steel wire.6.2 ResistivityThe electrical resistivity a
24、t a temperature of20C shall not exceed the values prescribed in Table 2(Explanatory Note 1).TABLE 1 Nickel Mass Percent and Thickness of CoatingDiameter Cross-Sectional Area at 20CThickness of Nickel, in.(for information only)in. mm cmil in.2mm22.0 % 4.0 % 7.0 % 10.0 % 27.0 %0.0720 1.829 5 180 0.004
25、07 2.63 334 637 1 181 1 703 4 8920.0641 1.628 4 110 0.00323 2.08 298 566 1 050 1 514 4 3490.0571 1.450 3 260 0.00256 1.65 266 505 936 1 350 3 8800.0508 1.290 2 580 0.00203 1.31 236 450 833 1 200 3 4520.0453 1.151 2 050 0.00161 1.04 211 401 743 1 071 3 0770.0403 1.024 1 620 0.00128 0.823 202 357 661
26、953 2 7380.0359 0.912 1 290 0.00101 0.653 167 318 589 849 2 4390.0320 0.813 1 020 0.000804 0.519 149 283 525 757 2 1740.0285 0.724 812 0.000638 0.412 133 252 467 686 1 9370.0253 0.643 640 0.000503 0.324 118 224 415 598 1 7190.0226 0.574 511 0.000401 0.259 105 200 371 535 1 5360.0201 0.511 404 0.0003
27、17 0.205 94 178 330 475 1 3660.0179 0.455 320 0.000252 0.162 83 158 294 423 1 2160.0159 0.404 253 0.000199 0.128 74 141 261 376 1 0800.0142 0.361 202 0.000158 0.102 66 126 233 336 9650.0126 0.320 159 0.000125 0.0804 59 112 207 298 8560.0113 0.287 128 0.000100 0.0647 53 100 185 267 7680.0100 0.254 10
28、0 0.0000785 0.0507 47 89 164 237 6800.0089 0.226 79.2 0.0000622 0.0401 41 80 146 211 6050.0080 0.203 64.0 0.0000503 0.0324 . 71 131 189 5440.0071 0.180 50.4 0.0000396 0.0255 . 63 116 168 4820.0063 0.160 39.7 0.0000312 0.0201 . 56 103 149 4280.0056 0.142 31.4 0.0000246 0.0159 . 50 92 132 3810.0050 0.
29、127 25.0 0.0000196 0.0127 . 44 82 118 3400.0045 0.114 20.2 0.0000159 0.0103 . 40 74 106 3060.0040 0.102 16.0 0.0000126 0.00811 . . 66 95 2720.0035 0.089 12.2 0.00000962 0.00621 . . 57 83 2380.0031 0.079 9.61 0.00000755 0.00487 . . 51 73 211TABLE 2 ResistivityResistivity, max at 20CClass of Wire Nick
30、elMass %-mm2/mN30A and N30HS 2 0.05906 (0.059062)4 0.05951 (0.059513)7 0.06021 (0.060210)10 0.06093 (0.060926)27 0.06543 (0.065433)N40A and N40HS 2 0.04442 (0.044418)4 0.04490 (0.044902)7 0.04561 (0.045614)10 0.04636 (0.046362)27 0.05122 (0.051216)B559 12 (2017)26.3 Continuity of CoatingThe nickel c
31、oating shall becontinuous. The continuity of the coating shall be determinedon representative samples taken before stranding or insulatingand shall be determined by the sodium polysulfide test, inaccordance with 10.2. Wire whose coating weight correspondsto a thickness less than 50 in. (0.00005 in.)
32、 (1.3 m) shall notbe subject to this test.6.4 Adherence of CoatingThe nickel coating shall befirmly adhered to the surface of the copper-clad steel wire. Theadherence of coating on the wire shall be determined onrepresentative samples taken before stranding or insulating.The adherence of coating sha
33、ll be determined by the wrapping,and immersion test in accordance with 10.3.6.5 Mass of CoatingThe mass of nickel coating expressedin percent of the total mass of the wire shall be not less than thepercentage specified and referred to in this specification or thepercentage as agreed on between the m
34、anufacturer and pur-chaser at the time of the placing of the order. For ease ofcomparison, the thickness of coating for various percentageshas been included in Table 1.6.6 JointsNecessary joints in the wire and rods prior tofinal coating and drawing shall be made in accordance withgood commercial pr
35、actice.7. Dimensions, Mass, and Permissible Variations7.1 The wire sizes shall be expressed as the diameter of thewire in decimal fractions of an inch to the nearest 0.0001 in.(0.003 mm) (Note 3). For diameters under 0.0100 in. (0.254mm), the wire shall not vary from the specified diameter bymore th
36、an + 0.0003 in. (0.009 mm) and 0.0001 in. (0.003mm) and for diameters of 0.0100 in. (0.254 mm) and over, thewire shall not vary from the specified diameter by morethan+3% and1%, expressed to the nearest 0.0001 in.(0.003 mm).NOTE 3The values of the wire diameters in Table 1 are given to thenearest 0.
37、0001 in. (0.003 mm) and correspond to the standard sizes givenin Specification B258.The use of gage numbers to specify wire sizes is notrecognized in this specification because of the possibility of confusion.Anexcellent discussion of wire gages and related subjects is contained in NBSHandbook 100.8
38、. Workmanship, Finish, and Appearance8.1 The nickel coating shall consist of a smooth, continuouslayer, firmly adherent to the surface of the copper. The wireshall be bright and free from all imperfections not consistentwith good commercial practice.8.2 The finish of the samples taken in accordance
39、with Table3 shall conform to the requirements of 8.1. The number of unitsin the sample showing surface defects not consistent withcommercial practice shall not exceed the allowable defectnumber c in Table 3. Failure to meet this requirement shallconstitute failure to meet the finish conformance crit
40、erion.9. Sampling9.1 The number of production units in a sample (Note 4)shall be as follows:NOTE 4Cumulative results secured on the product of a singlemanufacturer, indicating continued conformance to the criteria, arenecessary to ensure an over-all product meeting the requirements of thisspecificat
41、ion. The sample size and conformance criteria given for thevarious characteristics are applicable only to lots produced under theseconditions.9.1.1 For tensile strength, elongation, resistivity, mass ofcoating and adhesion and other defects, the sample shallconsist of four production units. For surf
42、ace finish the samplingshall be in accordance with Table 3. From each unit, one testspecimen of sufficient length shall be removed for the perfor-mance of required tests.9.1.2 For dimensional measurements, the sample shall con-sist of a quantity of production units shown in Table 4 underheading“ Fir
43、st Sample.”9.1.3 For packaging inspection (when specified by thepurchaser at the time of placing the order), the sample shallconsist of a quantity of production units as shown in Table 3.10. Test Methods10.1 Tensile PropertiesFor tensile strength, elongation,resistivity, dimensional measurement, and
44、 the quality of thebasis wire, the latest issue of Specification B452 shall applyTABLE 3 Sampling for Surface Finish and Packaging InspectionNumber of Unitsin LotNumber ofUnits inSample, nAllowableNumber ofDefectiveUnits, c1 to 30, incl all 031 to 50, incl 30 051 to 100, incl 37 0101 to 200, incl 40
45、 0201 to 300, incl 70 1301 to 500, incl 100 2501 to 800, incl 130 3Over 800 155 4TABLE 4 Sampling for Dimensional MeasurementsNumber of Unitsin LotFirst Sample Second SampleNumber of Unitsin Sample, n1Allowable Numberof Defects inSample c1Number of Unitsin Sample n2n1+ n2Allowable Numberof Defects i
46、n BothSamples, c21 to 14, incl all 0 . . 015 to 50, incl 14 0 . . 051 to 100, incl 19 0 23 42 1101 to 200, incl 24 0 46 70 2201 to 400, incl 29 0 76 105 3401 to 800, incl 33 0 112 145 4Over 800 34 0 116 150 4B559 12 (2017)3and the tests shall be performed on the nickel-coated wire(Explanatory Note 2
47、).10.2 Continuity of Coating:10.2.1 Specimens:10.2.1.1 Length of SpecimensTest specimens shall eachhave a length of about 6 in. (150 mm). They shall be tagged ormarked to correspond with the coil, spool, or reel from whichthey were cut.10.2.1.2 Treatment of SpecimensThe specimens shall bethoroughly
48、cleaned by immersion in a suitable organic solventfor at least 3 min, then removed and wiped dry with a clean,soft cloth (WarningSee 1.5). The specimen thus cleanedshall be kept wrapped in a clean, dry cloth until tested. Thatpart of the specimen to be immersed in the test solution shallnot be handl
49、ed. Care shall be taken to avoid abrasion by the cutends.10.2.2 Special Solution (sp gr 1.142)Make concentratedsolution by dissolving sodium sulfide crystals (cp) in distilledwater until the solution is saturated at about 21C (70F), andadd sufficient flowers of sulfur (in excess of 250 g/L ofsolution) to provide complete saturation, as shown by thepresence in the solution of an excess of sulfur after the solutionhas been allowed to stand for at least 24 h. Make the testsolution by diluting a portion of the concentrated solution withdistilled w
