1、Designation: B559 93 (Reapproved 2007) B559 12Standard 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
2、 revision, 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 Department of Defense.1. Scope1.1 This specifica
3、tion covers nickel-coated, round, copper-clad steel wire for electronic application.1.2 Nickel coatings in mass percentages of the total mass of the coated wire are as follows: 2, 4, 7, 10, and 27 %. Nickel-coatedwire having different minimum mass percentages of nickel may be obtained by mutual agre
4、ement between the manufacturer andthe purchaser. For information purposes, the thickness of coating in microinches provided by the percentages listed above is shownin Table 1.1.3 Four classes of nickel-coated, copper-clad steel wire are covered as follows:1.3.1 Class N30HSNominal 30 % conductivity,
5、hard drawn.1.3.2 Class N30ANominal 30 % conductivity, annealed.1.3.3 Class N40HSNominal 40 % conductivity, hard drawn.1.3.4 Class N40ANominal 40 % conductivity, annealed.1.4 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for informationo
6、nly, except for resistivity, where the SI units are to be regarded as the mathematical conversions to SI units that are provided forinformation only and are not considered standard.1.4.1 ExceptionThe SI values for resistivity are to be regarded as standard.1.5 The following safety hazards caveat per
7、tains only to the test method described in this specification.This standard does notpurport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard toestablish appropriate safety and health practices and determine the applicabilit
8、y of regulatory limitations prior to use.(WarningConsideration should be given to toxicity and flammability when selecting solvent cleaners.)2. Referenced Documents2.1 The following documents of the issue in effect on date of material purchase form a part of this specification to the extentreference
9、d herein:2.2 ASTM Standards:2B193 Test Method for Resistivity of Electrical Conductor MaterialsB258 Specification for Nominal Diameters and Cross-Sectional Areas of AWG Sizes of Solid Round Wires Used as ElectricalConductorsB452 Specification for Copper-Clad Steel Wire for Electronic ApplicationE75
10、Test Methods for Chemical Analysis of Copper-Nickel and Copper-Nickel-Zinc Alloys (Withdrawn 2010)32.3 American Chemical Society:4Standard Reagents Tests1 This specification is under the jurisdiction of ASTM Committee B01 on Electrical Conductors and is the direct responsibility of Subcommittee B01.
11、06 on CompositeConductors.Current edition approved Oct. 1, 2007Oct. 15, 2012. Published October 2007November 2012. Originally approved in 1972. Last previous edition approved in 20022007as B559 93 (2002)(2007).1 . DOI: 10.1520/B0559-93R07.10.1520/B0559-12.2 For referenced ASTM standards, visit the A
12、STM website, www.astm.org, or contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3 The last approved version of this historical standard is referenced on www.astm.org.4 Reagent Chemic
13、als, American Chemical Society Specifications , American Chemical Society, Washington, DC. For suggestions on the testing of reagents not listed bythe American Chemical Society, see Analar Standards for Laboratory Chemicals, BDH Ltd., Poole, Dorset, U.K., and the United States Pharmacopeia and Natio
14、nalFormulary, U.S. Pharmaceutical Convention, Inc. (USPC), Rockville, MD.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately de
15、pict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 1
16、9428-2959. United States12.4 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 presented for acceptance at one time, such amount, however, not to exceed10 000 lb (4500 kg) (Note 1).NOTE
17、 1A lot should comprise material taken from a product regularly meeting the requirements of this specification. Inspection of individual lotsof 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 r
18、egular inspection of the product as a whole as evidence of acceptability of such small lots.3.1.2 samplea quantity of production units (coils, reels, etc.) selected at random from the lot for the purpose of determiningconformance of the lot to the requirements of this specification.3.1.3 specimena l
19、ength of wire removed for test purposes from any individual production unit of the sample.4. Ordering Information4.1 Orders for material under this specification shall include the 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
20、(see 1.3).4.1.4 Mass percentage of nickel coating (see 1.2 andTable 1).4.1.5 Package size (see 14.2 and Section 14). Packaging inspection, if required (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
21、consist of copper-clad steel wire conforming to the product description, quality and specificationrequirements of Specification B452.5 Available from National Institute of Standards and Technology (NIST), 100 Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070, http:/www.nist.gov.TABLE 1 Nickel Mass
22、Percent and Thickness of CoatingDiameter Cross-Sectional Area at 20C Thickness of Nickel, in.(for information only)in. mm cmil in.2 mm2 2.0 % 4.0 % 7.0 % 10.0 % 27.0 %0.0720 1.829 5 180 0.00407 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
23、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 0.823 202 357 661 953 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
24、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 0.000317 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.
25、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 0.254 100 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 0.0
26、000503 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 0.127 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
27、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 211B559 1225.2 The nickel-coated wire shall consist of the basis wire coated with nickel (Note 2). The quality of the nickel-coated wire shallbe such that the finished prod
28、uct meets the properties and requirements in this specification.NOTE 2Nickel on copper-clad steel wire provides a protective coating for a prevention of oxidation of the copper either during fabrication or service.6. General Requirements6.1 Tensile strength and elongation of the nickel-coated wire s
29、hall conform to the requirements of Specification B452 for theapplicable size and class of copper-clad steel wire.6.2 ResistivityThe electrical resistivity at a temperature of 20C shall not exceed the values prescribed in Table 2. See(Explanatory Note 31 for calculating electrical resistance. ).NOTE
30、 3Relationships which may be useful in connection with the values of electrical resistivity prescribed in this specification are shown in Table3. Resistivity units 158 -mm 2/m and 0.15328 -g/m2 at 20C are respectively the international equivalent of volume and mass resistivity of annealedcopper equa
31、l to 100 % conductivity. The latter term means that a copper wire 1 m in length and weighing 1 g would have a resistance of 0.15328 . Thisis equivalent to a resistivity value of 875.20 lb/mile 2, which signifies the resistance of a copper wire 1 mile in length weighing 1 lb. The volumeresistivity is
32、 equivalent, for example, to 1.7241 cm of length of a copper bar 1 cm2 in cross section. A complete discussion of this subject is containedin NBS Handbook 100. The use of five significant figures in expressing resistivity does not imply the need for a greater accuracy of measurement thanthat specifi
33、ed in Test Method B193. The use of five significant figures is required for complete reversible conversion from one set of resistivity units toanother.6.3 Continuity of CoatingThe nickel coating shall be continuous. The continuity of the coating shall be determined onrepresentative samples taken bef
34、ore stranding or insulating and shall be determined by the sodium polysulfide test, in accordancewith 10.2. Wire whose coating weight corresponds to a thickness less than 50 in. (0.00005 in.) (1.3 m) shall not be subject tothis test.6.4 Adherence of CoatingThe nickel coating shall be firmly adhered
35、to the surface of the copper-clad steel wire. Theadherence of coating on the wire shall be determined on representative samples taken before stranding or insulating. The adherenceof coating shall be determined by the wrapping, and immersion test in accordance with 10.3.6.5 Mass of CoatingThe mass of
36、 nickel coating expressed in percent of the total mass of the wire shall be not less than thepercentage specified and referred to in this specification or the percentage as agreed on between the manufacturer and purchaserat the time of the placing of the order. For ease of comparison, the thickness
37、of coating for various percentages has been includedin Table 1.6.6 JointsNecessary joints in the wire and rods prior to final coating and drawing shall be made in accordance with goodcommercial practice.7. Dimensions, Mass, and Permissible Variations7.1 The wire sizes shall be expressed as the diame
38、ter of the wire in decimal fractions of an inch to the nearest 0.0001 in. (0.003mm) (Note 43). For diameters under 0.0100 in. (0.254 mm), the wire shall not vary from the specified diameter by morethan + 0.0003 in. (0.009 mm) and 0.0001 in. (0.003 mm) and for diameters of 0.0100 in. (0.254 mm) and o
39、ver, the wire shallnot vary from the specified diameter by more than + 3 % and 1 %, expressed to the nearest 0.0001 in. (0.003 mm).NOTE 3The values of the wire diameters in Table 1 are given to the nearest 0.0001 in. (0.003 mm) and correspond to the standard sizes given inSpecification B258. The use
40、 of gage numbers to specify wire sizes is not recognized in this specification because of the possibility of confusion. Anexcellent discussion of wire gages and related subjects is contained in NBS Handbook 100.8. Workmanship, Finish, and Appearance8.1 The nickel coating shall consist of a smooth, c
41、ontinuous layer, firmly adherent to the surface of the copper. The wire shallbe bright and free from all imperfections not consistent with good commercial practice.TABLE 2 ResistivityResistivity, max at 20CClass of Wire NickelMass %V-mm2/mN30A and N30HS 2 0.05906 (0.059062)4 0.05951 (0.059513)7 0.06
42、021 (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 1238.2 The finish of the samples taken in accordance with Table 43 shall conform to the requirements of 8.1. The number of
43、 unitsin the sample showing surface defects not consistent with commercial practice shall not exceed the allowable defect number c inTable 43. Failure to meet this requirement shall constitute failure to meet the finish conformance criterion.9. Sampling9.1 The number of production units in a sample
44、(Note 54) shall be as follows:NOTE 4Cumulative results secured on the product of a single manufacturer, indicating continued conformance to the criteria, are necessary to ensurean over-all product meeting the requirements of this specification. The sample size and conformance criteria given for the
45、various characteristics areapplicable only to lots produced under these conditions.9.1.1 For tensile strength, elongation, resistivity, mass of coating and adhesion and other defects, the sample shall consist of fourproduction units. For surface finish the sampling shall be in accordance with Table
46、43. From each unit, one test specimen ofsufficient length shall be removed for the performance of required tests.9.1.2 For dimensional measurements, the sample shall consist of a quantity of production units shown in Table 54 underheading“ First Sample.”9.1.3 For packaging inspection (when specified
47、 by the purchaser at the time of placing the order), the sample shall consist ofa quantity of production units as shown in Table 43.10. Test Methods10.1 Tensile PropertiesFor tensile strength, elongation, resistivity, dimensional measurement, and the quality of the basiswire, the latest issue of Spe
48、cification B452 shall apply and the tests shall be performed on the nickel-coated wire (ExplanatoryNote 62).NOTE 6It is known that the rate of loading during tension testing affects the performance of the sample to a greater or lesser extent depending uponmany factors. In general, tested values of t
49、ensile strength are increased and tested values of elongation are reduced with increase of speed of the movinghead of the testing machine. In the case of tests on soft or annealed wire, however, the effects of speed of testing are not pronounced. Tests of soft wiremade at speeds of moving head which under no-load conditions are not greater than 12 in./min (300 mm/min) do not alter the final results of tensilestrength and elongation determinations to any practical extent. In the case of hard-drawn wire, these effects are pronounced wh
