ASTM B3-2012 Standard Specification for Soft or Annealed Copper Wire《软或退火铜线标准规格》.pdf

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1、Designation: B3 01 (Reapproved 2007) B3 12Standard Specification forSoft or Annealed Copper Wire1This standard is issued under the fixed designation B3; the number immediately following the designation indicates the year of originaladoption or, in the case of revision, the year of last revision. A n

2、umber in parentheses indicates the year of last reapproval. A superscriptepsilon () 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 specification covers drawn and annealed or soft ro

3、und bare copper wire for electrical purposes (see Explanatory Note1).1.2 The values stated in inch-pound or SI units are to be regarded separately as standard. Each system shall be usedindependently of the other. Combining values from the two systems may result in non-conformance with the specificat

4、ion. Forconductor sizes designated by AWG or kcmil sizes, the requirements in SI units are numerically converted from the correspondingrequirements in inch-pound units. For conductor sizes designation by AWG or kcmil, the requirements in SI units have beennumerically converted from corresponding val

5、ues stated or derived in inch-pound units. For conductor sizes designated by SI unitsonly, the requirements are stated or derived in SI units.as standard. The values given in parentheses are mathematical conversionsto SI units that are provided for information only and are not considered standard.1.

6、2.1 ExceptionFor density, resistivity and temperature, the values stated in SI units are to be regarded as standard.2. Referenced Documents2.1 The following documents of the issue in effect at the time of reference form a part of this specification to the extentreferenced herein:2.2 ASTM Standards:2

7、B49 Specification for Copper Rod Drawing Stock for Electrical PurposesB193 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 ElectricalConductors2.3 National Institute of Standards

8、 and Technology:NBS Handbook 100 Copper Wire Tables33. Ordering Information3.1 Orders for material under this specification shall include the following information:3.1.1 Quantity of each size,3.1.2 Wire size: diameter in inches (see 5.4 and Table 1),3.1.3 Type of copper, if special (Section 4),3.1.4

9、 Package size (see 10.1),3.1.5 Special package marking, if required, and3.1.6 Place of inspection (see 9.1).4. Materials and Manufacture4.1 The material shall be copper of such quality and purity that the finished product shall have the properties and characteristicsprescribed in this specification.

10、1 This specification is under the jurisdiction of ASTM Committee B01 on Electrical Conductorsand is the direct responsibility of Subcommittee B01.04 on Conductorsof Copper and Copper Alloys.Current edition approved March 15, 2007Nov. 15, 2012. Published April 2007November 2012. Originally approved i

11、n 1912. Last previous edition approved in 20012007as B3 01.B3 01 (2007). DOI: 10.1520/B0003-01R07.10.1520/B0003-12.2 For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to

12、 the standards Document Summary page on the ASTM website.3 Available from the National Technical Information Service, 5285 Port Royal Rd, Springfield, VA 22161.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 m

13、ade to the previous version. Becauseit may not be technically possible to adequately depict 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.Co

14、pyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1NOTE 1The following standards define the materials suitable for use: Specification B49.4.2 Copper bars of special qualities, forms, or types, as may be agreed upon between the manufacturer

15、 and the purchaser, andwhich will conform to the requirements prescribed in this specification may also be used.5. General Requirements (see Section 7)5.1 Tensile Strength and ElongationThe wire shall conform to the requirements for elongation prescribed in Table 1 (seeExplanatory Note 2). No requir

16、ements for tensile strength are specified. For wire whose nominal diameter is more than 0.001 in.(0.025 mm) greater than a size listed in Table 1, but less than that of the next larger size, the requirements of the next larger sizeshall apply.5.2 JointsNecessary joints in the completed wire and in t

17、he wire and rods prior to final drawing shall be made in accordancewith the best commercial practice.5.3 ResistivityThe electrical resistivity at 20C shall not exceed 875.20 lb/mile2 (0.15328 g/m2).5.4 Dimensions and Permissible VariationsThe wire sizes shall be expressed as the diameter of the wire

18、 in decimal fractionsof an inch to the nearest 0.0001 in. (0.001 mm) (0.0025 mm) (or 0.001 mm) (see Explanatory Note 3). For diameters under 0.0100in. (0.2540(0.254 mm), the wire shall not vary from the specified diameter by more than plus and minus 0.0001 in. (0.0025 mm),and for diameters of 0.0100

19、 in. (0.254 mm) and over the wire shall not vary from the specified diameter by more than plus andminus 1 %, expressed to the nearest 0.0001 in. (0.001 (or 0.001 mm).5.5 FinishThe wire shall be free of all imperfections not consistent with the best commercial practice.TABLE 1 Tensile RequirementsDia

20、meter Area at 20C Elongation in10 in.(254 mm),% minin. mm cmils in.2 mm20.4600 11.684 211 600 0.1662 107.0 350.4096 10.404 167 800 0.1318 85.0 350.3648 9.266 133 100 0.1045 67.4 350.3249 8.252 105 600 0.08291 53.5 350.2893 7.348 83 690 0.06573 42.4 300.2576 6.543 66 360 0.05212 33.6 300.2294 5.827 5

21、2 620 0.04133 26.7 300.2043 5.189 41 740 0.03278 21.2 300.1819 4.620 33 090 0.02599 16.8 300.1620 4.115 26 240 0.02061 13.3 300.1443 3.665 20 820 0.01635 10.5 300.1285 3.264 16 510 0.01297 8.37 300.1144 2.906 13 090 0.01028 6.63 300.1019 2.588 10 380 0.008155 5.26 250.0907 2.304 8 230 0.00646 4.17 2

22、50.0808 2.052 6 530 0.00513 3.31 250.0720 1.829 5 180 0.00407 2.63 250.0641 1.628 4 110 0.00323 2.08 250.0571 1.450 3 260 0.00256 1.65 250.0508 1.290 2 580 0.00203 1.31 250.0453 1.151 2 050 0.00161 1.04 250.0403 1.024 1 620 0.00128 0.823 250.0359 0.912 1 290 0.00101 0.654 250.0320 0.813 1 020 0.0008

23、04 0.517 250.0285 0.724 812 0.000638 0.411 250.0253 0.643 640 0.000503 0.324 250.0226 0.574 511 0.000401 0.259 250.0201 0.511 404 0.000317 0.205 200.0179 0.455 320 0.000252 0.162 200.0159 0.404 253 0.000199 0.128 200.0142 0.361 202 0.000158 0.102 200.0126 0.320 159 0.000125 0.081 200.0113 0.287 128

24、0.000100 0.065 200.0100 0.254 100 0.0000785 0.051 150.0089 0.226 79.2 0.0000622 0.040 150.0080 0.203 64.0 0.0000503 0.032 150.0071 0.180 50.4 0.0000396 0.026 150.0063 0.160 39.7 0.0000312 0.020 150.0056 0.142 31.4 0.0000246 0.016 150.0050 0.127 25.0 0.0000196 0.013 150.0045 0.114 20.2 0.000 0159 0.0

25、10 150.0040 0.102 16.0 0.0000126 0.0081 150.0035 0.089 12.2 0.00000962 0.0062 150.0031 0.079 9.61 0.00000755 0.0049 15B3 1226. Test Methods6.1 Tensile Strength and ElongationNo test for tensile strength shall be required.6.1.1 The elongation of wire with a nominal diameter greater than 0.0808 in. (2

26、.052 mm) shall be determined as the permanentincrease in length due to the breaking of the wire in tension (see Explanatory Note 4). The elongation shall be measured betweengage marks placed originally 10 in. (242 mm) apart upon the test specimen and expressed in percent of the original length.6.1.2

27、 Determine the elongation of wire whose nominal diameter is larger than 0.0808 in. (2.052 mm) in diameter as thepermanent increase in length, expressed in percent of the original length, due to the breaking of the wire in tension, measuredbetween gage marks placed originally 10 in. (254 mm) apart up

28、on the test specimen (see Explanatory Note 4). The elongation ofwire whose with a nominal diameter is equal to or less than 0.0808 in. (2.052(2.053 mm) and under may be determined asdescribed above or by measurements made between the jaws of the testing machine. When the latter method is used, measu

29、rementsare made between the jaws, the zero length shall be the distance between the jaws at the start of the tension test and be as near10 in. (254 mm) as practicable, and the practicable. The final length shall be the distance between the jaws at the time of rupture.The fracture shall be between ga

30、ge marks in the case of specimens so marked or between the or jaws of the testing machinemachine, depending on method used, and not closer than 1 in. (25.4 mm) to either gage mark or either jaw.6.2 ResistivityDetermine the electrical resistivity of the material in accordance with Test Method B193 (s

31、ee Explanatory Note5). The purchaser may accept certification that the wire was drawn from stock meeting the International Standard for AnnealedCopper instead of resistivity tests on the finished wire.6.3 Dimensional MeasurementsMake dimensional measurements with a micrometer caliper equipped with a

32、 verniergraduated in 0.0001 in. (0.001 (or 0.001 mm). Take measurements on at least three places on each unit selected for this test. Ifaccessible, take one measurement on each end and one near the middle. The average of the three measurements shall determinecompliance with the requirements.6.4 Surf

33、ace FinishMake a surface-finish inspection with the unaided eye (normal spectacles acceptable).7. Conformance Criteria (see Explanatory Note 6)7.1 Any lot of wire, the samples of which comply with the conformance criteria of this section, shall be considered as complyingwith the requirements of Sect

34、ion 5. Individual production units that fail to meet one or more of the requirements shall be rejected.Failure of a sample group from a lot to meet one or more of the following criteria shall constitute cause for rejection of the lot.The conformance criteria for each of the prescribed properties giv

35、en in Section 5 are as follows:7.1.1 ElongationThe lot shall be considered conforming if the average elongation of the four specimens is not less than theappropriate elongation value in Table 1 plus 2.5 percentage points; however any individual production unit, the specimen fromwhich has an elongati

36、on less than the appropriate elongation value in Table 1, shall be rejected.7.1.1.1 The lot shall be considered to have failed to meet the elongation conformance criterion if the average of the fourspecimens is less than the elongation in Table 1 plus 2.5 percentage points and elongation of any of t

37、he individual specimens isless than the value in Table 1.7.1.1.2 If the average of the four specimens is less than the elongation in Table 1 plus 2.5 percentage points and the elongationof each of the individual specimens is equal to or more than the value in Table 1, six additional specimens from s

38、ix productionunits, other than the four originally sampled shall be tested. The lot shall be considered conforming if the elongation of each ofthe ten specimens is not less than the appropriate elongation value in Table 1, and the average of the ten specimens is not less thanthat value plus 2.5 perc

39、entage points. The lot shall be considered to have failed to meet the elongation requirement if any of theten specimens is less than the appropriate elongation value in Table 1 or if the average of the ten specimens is less than that valueplus 2.5 percentage points.7.1.2 ResistivityThe electrical re

40、sistivity of each of the four specimens shall conform to the requirements of 5.3. Failure tomeet these requirements shall constitute failure to meet the resistivity conformance criterion.7.1.3 DimensionsThe dimensions of the first sample (Table 2) shall conform to the requirements of 5.4. If there a

41、re no failures,TABLE 2 Sampling for Dimensional MeasurementsNumber of Units in LotFirst Sample Second SampleNumber of Units inSample, n1Allowable Number ofDefects in FirstSample, c1Number of Units inSample, n2n1 plus n2 Allowable Number ofDefects in BothSamples, c21 to 30, incl all 0 . . .15 to 50,

42、incl 14 0 . . .51 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 4B3 123the lot conforms to this requirement. If there are failures but the number of these does not exceed the allowable defect number,c2 (Table

43、2), for the respective number of units in the sample, a second sample equal to n2 shall be taken and the total defects ofthe n1 plus n2 units shall not exceed the allowable defect number, c2. Failure to meet this requirement shall constitute failure tomeet the dimensional conformational criterion.7.

44、1.4 Surface FinishThe surface finish of the samples taken in accordance with Table 3 shall conform to the requirements of5.5. The number of units in the sample showing surface defects not consistent with commercial practice shall not exceed theallowable defect number, c, in Table 3. Failure to meet

45、this requirement shall constitute failure to meet the surface-finishconformance criterion.7.1.5 PackagingConformance to the packaging requirements specified by the purchaser shall be determined in accordancewith Table 3. The number of units in the sample showing nonconformance to the requirement sha

46、ll not exceed the allowable defectnumber, c, in Table 3. Failure to meet this requirement shall constitute failure to meet the packaging conformance criterion.8. Density8.1 For the purpose of calculating mass per unit length, cross-sections, etc., the density of the copper shall be taken as 8.89g/cm

47、3 (0.32117 lb/in.3) at 20C (see Explanatory Note 7).9. Inspection9.1 General (see Explanatory Note 6)All tests and inspections shall be made at the place of manufacture unless agreed uponbetween the manufacturer and the purchaser at the time of purchase. The manufacturer shall afford the inspector r

48、epresenting thepurchaser all reasonable facilities to satisfy him that the material is being furnished in accordance with this specification.9.1.1 Unless otherwise agreed upon between the purchaser and the manufacturer, conformance of the wire to the variousrequirements listed in Section 5 shall be

49、determined on samples taken from each lot of wire presented for acceptance.9.1.2 The manufacturer shall, if requested prior to inspection, certify that all wire in the lot was made under such conditionsthat the product as a whole conforms to the requirements of this specification as determined by regularly made and recorded tests.9.2 Inspection and Testing Terms:9.2.1 LotA lot is any amount of wire of one type and size presented for acceptance at one time, such amount, however, notto exceed 100 000 lb (45 000 kg) (see Explanatory Note 8).9.2.2 Sample