1、Designation: B624 07 (Reapproved 2012)Standard Specification forHigh-Strength, High-Conductivity Copper-Alloy Wire forElectronic Application1This standard is issued under the fixed designation B624; the number immediately following the designation indicates the year oforiginal adoption or, in the ca
2、se of 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 spec
3、ification covers high-strength, high-conductivity round copper-alloy wire 0.00099 to 0.0720 in.0.025 to 1.829 mm in diameter, used for electronic hookupwire. The tensile strength of the wire is 60 ksi 414 MPaminimum and the electrical conductivity at 20C is 85 % IACSminimum.1.2 The values stated in
4、inch-pound units are to be regardedas the standard. The values given in parentheses are forinformation only.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety
5、and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2B193 Test Method for Resistivity of Electrical ConductorMaterialsE8 Test Methods for Tension Testing of Metallic Materials3. Ordering Information3.1 Orders for wire
6、 furnished to this specification shallinclude the following information:3.1.1 Quantity (pounds or kilograms),3.1.2 Wire size (Table 1),3.1.3 Place of inspection (Section 7),3.1.4 Package size (Section 9), and3.1.5 Special marking, if required (Section 9).4. Materials and Manufacture4.1 The wire shal
7、l be copper alloy of such quality and puritythat the finished product shall have the properties and charac-teristics prescribed in this specification. Chemical analysis of aspecific alloy is not a requirement of this specification unlessdefinite agreement is reached between the manufacturer andthe p
8、urchaser in the placing of individual orders.5. General Requirements5.1 Tensile PropertiesThe minimum breaking strengthand elongation of the conductor shall be as prescribed in Table1. Breaking strengths of intermediate sizes may be calculatedin accordance with Explanatory Note 1.5.2 Electrical Resi
9、stanceThe electrical resistance of thewire at a temperature of 20C shall not exceed the values inTable 1. Resistances of intermediate sizes may be calculated inaccordance with Explanatory Note 2.5.3 DiameterThe wire size shall be expressed as thediameter of the wire in decimal fractions of an inch t
10、o thenearest 0.0001 in. 0.003 mm. For diameters under 0.0100 in.0.254 mm, the wire shall not vary from the specified diameterby more than 60.0001 in. 0.003 mm. For diameters 0.0100in. 0.254 mm and over, the wire shall not vary from thespecified diameter by more than 61 %, expressed to thenearest 0.0
11、001 in. 0.003 mm.5.4 JointsJoints necessary to processing shall be of suchquality that all requirements of this specification are met.5.5 FinishThe finished material shall be free of defectsthat detract from the normal end use or longevity of theproduct. The material shall be smooth, bright, clean,
12、and free oflaps, slivers, seams, scratches, and other imperfections notconsistent with good commercial practice.6. Test Method6.1 Breaking Strength and Elongation Conduct tensionand elongation tests in accordance with Test Methods E8 andwith a rate of loading not to exceed 10 in./min 250 mm/min.The
13、breaking strength shall equal or exceed the value specifiedin Table 1.1This specification is under the jurisdiction of ASTM Committee B01 onElectrical Conductors and is the direct responsibility of Subcommittee B01.04 onConductors of Copper and Copper Alloys.Current edition approved Oct. 15, 2012. P
14、ublished November 2012. Originallyapproved in 1977. Last previous edition approved in 2007 as B624 07. DOI:10.1520/B0624-07R12.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information
15、, refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States16.2 ResistanceMeasure resistance in accordance with TestMethod B193.6.3 DiameterMake diameter measurements with a mi-cro
16、meter or equivalent caliper equipped with a vernier gradu-ated in 0.0001 in. or 0.003 mm. Gage each coil in three places,one near each end and one near the center. From each spool,unreel approximately 12 ft 4 m and gage the wire in sixplaces between the second and twelfth foot from the end. Theavera
17、ge of the measurements obtained shall be considered thewire size specified in 5.3.7. Inspection7.1 GeneralAll tests and inspections shall be made at theplace of manufacture unless otherwise agreed upon betweenthe manufacturer and the purchaser at the time of purchase. Themanufacturer shall afford th
18、e inspector representing the pur-chaser all reasonable facilities to satisfy him that the materialis being furnished in accordance with this specification (Ex-planatory Note 3).7.1.1 Unless otherwise agreed upon between the manufac-turer and the purchaser, conformance of the wire to the variousrequi
19、rements listed in Section 5 shall be determined on samplestaken from each lot of wire presented for acceptance.7.1.2 The manufacturer, when requested before inspection,shall certify that all wire in the lot was made under suchconditions that the product as a whole conforms to therequirements of this
20、 specification as determined by regularlymade and recorded tests.TABLE 1 Tensile Properties and ResistanceNominal Diameter Breaking Strength, min Elongation,min, % in10 in.or 250mmResistance, max, at 20Cin. mm lbf N V/1000 ft V/km0.0720 1.829 239 1065 9 2.40 7.880.0641 1.628 190 844 9 3.03 9.940.057
21、1 1.450 151 670 9 3.82 12.50.0508 1.290 119 530 9 4.82 15.80.0453 1.151 94.8 422 9 6.08 19.90.0403 1.024 75.0 334 9 7.66 25.10.0359 0.912 59.5 265 9 9.68 31.70.0320 0.813 47.3 210 9 12.1 39.90.0285 0.724 37.5 167 9 15.3 50.20.0253 0.643 29.6 132 9 19.5 63.70.0226 0.574 23.6 105 9 24.3 80.00.0201 0.5
22、11 18.7 83.1 9 30.8 1010.0179 0.455 14.8 65.8 9 38.9 1280.0159 0.404 11.7 52.0 9 49.5 1610.0142 0.361 9.31 41.4 9 61.4 2020.0126 0.320 7.33 32.6 9 78.1 2570.0113 0.287 5.90 26.2 9 97.3 3200.0100 0.254 4.62 20.6 8 124 4080.0089 0.226 3.65 16.2 8 158 5170.0080 0.203 2.94 13.1 8 195 6430.0071 0.180 2.3
23、1 10.3 8 249 8200.0063 0.160 1.81 8.1 8 317 10400.0056 0.142 1.43 6.3 8 403 13300.0050 0.127 1.13 5.0 7 508 16700.0045 0.114 0.91 4.0 7 630 20800.0040 0.102 0.72 3.2 7 802 26100.00350.00310.0890.0790.540.422.41.97710601360345044100.0028 0.071 0.34 1.5 6 1670 54900.0025 0.064 0.27 1.2 6 2120 69500.00
24、22 0.056 0.21 0.9 6 2770 90800.0020 0.051 0.17 0.8 6 3380 11 1000.00176A0.045 0.22 1.0 . 4430 14 5000.00157A0.040 0.17 0.8 . 5650 18 5000.00140A0.036 0.13 0.6 . 7220 23 7000.00124A0.031 0.10 0.5 . 9390 30 800.0.00111A0.028 0.08 0.4 . 12 000 39 2000.00099A0.025 0.06 0.3 . 15 400 50 500AThese single e
25、nds will be hard temper.B624 07 (2012)27.2 Description of Inspection Terms :7.2.1 LotAn inspection lot shall consist of an identifiablequantity of wire subjected to inspection at one time. Each lotshall consist of units of wire of the same size and temper,manufactured under essentially the same cond
26、itions at essen-tially the same time. The amount in any case shall not exceed100 production units.7.2.2 SampleA sample is a quantity of production units(coils, reels, and so forth) selected at random from the lot forthe purpose of determining conformance of the lot to therequirements of this specifi
27、cation.7.2.3 SpecimenA specimen is a length of wire removedfor test purposes from any individual production unit of thesample.7.3 Sample Size The number of production units in asample shall be as follows:7.3.1 For breaking strength, elongation, electricalresistance, and diameter measurements, the sa
28、mple shall con-sist of a quantity of production units shown in Table 2 underheading “First Sample.” From each unit, one test specimen ofsufficient length shall be removed for the performance of therequired tests.7.3.2 For surface finish and packaging inspection, whenspecified by the purchaser at the
29、 time of placing the order, thesample shall consist of a quantity of production units as shownin Table 3.8. Conformance Criteria8.1 Any lot of wire, the samples of which comply withconformance criteria of this section, shall be considered ascomplying with the requirements of Section 5. Individualpro
30、duction units that fail to meet one or more of the require-ments shall be rejected. Failure of a sample group from a lot tomeet one or more of the following criteria shall constitutecause for rejection of the lot. The conformance criteria for eachof the prescribed properties given in Section 5 are a
31、s follows:8.1.1 For breaking strength, elongation, resistance, anddiameter measurements, the sample shall consist of a quantityof production units shown in Table 2 under heading “FirstSample.” If there are no defects, the lot shall be considered asconforming to these requirements. If there are defec
32、ts, but thenumber of these do not exceed the allowable defect number c2(Table 2) for the respective number of units in the sample, asecond sample equal to n2shall be taken and the total defectsof the n1+ n2units shall not exceed the allowable defectnumber c2. Failure to meet this requirement shall c
33、onstitutefailure to meet the conformance criteria (Explanatory Note 4).8.1.1.1 Breaking Strength and Elongation The breakingstrength and elongation of each of the specimens shall conformto the requirements of 5.1 and Table 1.8.1.1.2 Electrical ResistanceThe electrical resistanceshall conform to the
34、requirements of 5.2 and Table 1.8.1.1.3 DiameterThe diameter of each of the specimensshall conform to the requirements of 5.3.8.1.2 For surface finish and packaging, when specified bythe purchaser at the time of placing the order, the sample shallconsist of a quantity of production units as shown in
35、 Table 3.The number of units in the sample showing nonconformance tothe requirements shall not exceed the allowable defect numberc in Table 3. Failure to meet the requirements shall constitutefailure to meet the conformance criteria.9. Packaging and Package Marking9.1 Package sizes and marking shall
36、 be agreed to betweenthe manufacturer and the purchaser in the placing of individualorders.9.2 The wire shall be packaged so that it is protected againstdamage or degradation in ordinary handling and shipping.TABLE 2 Sampling for Mechanical and Electrical TestsNumber of UnitsFirst Sample Second Samp
37、leNumber of Units inSample, n1Allowable Number ofDefects in Sample toAccept Lot, c1Number of Units inSample, n2n1+ n2Allowable Number ofDefects in Both Samplesto Accept Lot, c21 to 3 all 0 . . 04 to 8 4 0 . . 09to15 4 0 5 9 116 to 25 5 0 9 14 126 to 40 8 0 12 20 141 to 65 12 0 18 30 166 to 100 19 0
38、23 42 1TABLE 3 Sample for Surface Finish and PackagingNumber of Units in LotNumber of Units inSample, nAllowable Number ofDefects in Sample toAccept Lot, c1to3 All 04to8 4 09to15 9 016 to 25 14 026 to 40 20 041 to 65 30 066 to 100 42 0B624 07 (2012)3EXPLANATORY NOTESNOTE 1The minimum breaking streng
39、th for any single strand con-ductor shall be calculated as follows:Breaking strength,min, lb 5 47 120 3 mindiameter, in.!2orBreaking strength,min, N 5 324.9 3 mindiameter, mm!2NOTE 2The maximum electrical resistance for any single strandconductor shall be calculated as follows:Resistance,max/1000 ft
40、! 50.01220mindiameter, in.!2orResistance,max, /km! 525.83mindiameter, mm!2NOTE 3Cumulative results secured on the product of a singlemanufacturer, indicating continued conformance to the criteria, arenecessary to ensure an overall product meeting the requirements of thisspecification. The sample siz
41、es and conformance criteria given for thevarious characteristics are applicable only to lots produced under theseconditions.NOTE 4A defect should be taken as the failure of the individualrequirements (breaking strength, elongation, resistance, and diameter)specified in 8.1.1. For example, a defect o
42、f two individual requirementswould be considered one defect of each requirement and not two defectsof the sample.ASTM 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 advi
43、sed that 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
44、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 theresponsible technical committee, which you may attend. If
45、 you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individ
46、ual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).B624 07 (2012)4
