1、Designation:F21996(Reapproved 2013)Standard Test Methods of TestingFine Round and Flat Wire for Electron Devices and Lamps1This standard is issued under the fixed designation F219;the number immediately following the designation indicates the year of originaladoption or,in the case of revision,the y
2、ear of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 These test methods cover the testing of fine wire,flat orround,approximately 0.010 in.(0.25 mm)and smaller indiameter
3、or thickness,used in electronic devices and lamps.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 This standard does not purport t
4、o address all of thesafety concerns,if any,associated with its use.It is theresponsibility of whoever uses this standard to consult andestablish appropriate safety and health practices and deter-mine the applicability of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2B
5、63 Test Method for Resistivity of Metallically ConductingResistance and Contact MaterialsD374 Test Methods for Thickness of Solid Electrical Insu-lation(Withdrawn 2013)3F16 Test Methods for Measuring Diameter or Thickness ofWire and Ribbon for Electronic Devices and LampsF205 Test Method for Measuri
6、ng Diameter of Fine Wire byWeighingF289 Specification for Molybdenum Wire and Rod forElectronic Applications3.Test Specimens3.1 The number of spools per shipment to be checked shallbe agreed upon by the producer and consumer.Three testspecimens from each spool to be tested shall be taken for thepurp
7、ose of each of the tests covered by these methods,exceptSection 4,where one specimen per shipment shall be submit-ted.These specimens shall be selected sufficiently far fromeither end of the spool of wire to be free from kinks,bends,anddistortion.With the exceptions mentioned in 3.2,the specimenssha
8、ll be taken from points in the length of the wire separated byat least 1 ft(305 mm).3.2 For the edgewise curvature test,straightness test,andtension tests the specimens shall be taken from points in thelength of the wire separated by at least 3 ft(0.9 m).4.Chemical Analysis4.1 In case of disagreemen
9、t between producer and consumerchemical analysis of the material shall be made in accordancewith the methods of the American Society for Testing andMaterials for the respective materials when such methods ofanalysis are available.When ASTM test methods are notavailable,the analytical procedures shal
10、l be agreed upon by theproducer and the consumer.5.Dimensions5.1 Procedure A for Round WireDetermine the weight-size of round wire in accordance with Test Method F205.5.2 Procedure B for Round WireAs an alternative method,the diameter of wire over 0.005 in.(0.13 mm)may bedetermined in accordance wit
11、h Test Methods D374.5.3 Procedure for Flat Wire:5.3.1 Determine the dimensions of flat wire in accordancewith 5.1 in conjunction with width as measured in accordancewith 5.2,or if agreed upon by the manufacturer and thepurchaser,any dimension exceeding 0.005 in.may be deter-mined in accordance with
12、5.2 alone.5.3.2 In determining the width of flat wire,form a flatwiseloop loosely with the ends held between the fingers.The minoraxis of the loop shall be12to34of the diameter of themicrometer jaws.Measure the width of the ribbon with thecurve loop perpendicular to the micrometer jaws.Take care not
13、to distort the ribbon or bend it out of the correct plane duringmeasurement.5.4 In case of disagreement between producer andconsumer,Test Methods F16 shall be used as the refereemethod.1These test methods are under the jurisdiction of ASTM Committee F01 onElectronics and are the direct responsibilit
14、y of Subcommittee F01.03 on MetallicMaterials.Current edition approved May 1,2013.Published May 2013.Originallyapproved in 1947.Last previous edition approved in 2009 as F219 96(2009).DOI:10.1520/F0219-96R13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer S
15、ervice at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Consho
16、hocken,PA 19428-2959.United States1 5.5 ReportThe report shall include the average weight ofwire or ribbon in mg/200 mm to three significant figures.Theaverage measurements for diameter,width,or thickness shallbe reported to the nearest 0.0001 in.(0.002 mm).6.Out-of-Roundness6.1 ProcedureMeasure out-of-roundness on round wireover 0.005 in.(0.13 mm)in diameter in accordance withSections 3 and 4 of Test Methods D374.For wire 0.005 in.orless in diameter the same method shall apply except a benchtyp
