1、Designation: B 230/B 230M 07Standard Specification forAluminum 1350H19 Wire for Electrical Purposes1This standard is issued under the fixed designation B 230/B 230M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last
2、revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon (e) 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 aluminum 1350H1
3、9 (extrahard) round wire for electrical purposes.1.2 The values stated in inch-pound or SI units are to beregarded separately as standard. The values in each system arenot exact equivalents; therefore, each system shall be usedindependently of the other. Combining values from the twosystems may resu
4、lt in nonconformance with the specification.1.2.1 For density, resistivity, and temperature, the valuesstated in SI units are to be regarded as standard.NOTE 1Prior to 1975 aluminum 1350 was designated EC aluminum.NOTE 2The aluminum and temper designations conform toANSI H35.1/H35.1M. Aluminum 1350
5、corresponds to UNS A91350 inaccordance with Practice E 527.NOTE 3For definitions of terms found in this specification relating touninsulated electrical conductors see Terminology B 354.2. Referenced Documents2.1 The following documents of the issue in effect on thedate of material purchase form a pa
6、rt of this specification to theextent referenced herein.2.2 ASTM Standards:2B 193 Test Method for Resistivity of Electrical ConductorMaterialsB 233 Specification for Aluminum 1350 Drawing Stock forElectrical PurposesB 354 Terminology Relating to Uninsulated Metallic Elec-trical ConductorsB 557 Test
7、Methods for Tension Testing Wrought and CastAluminum- and Magnesium-Alloy ProductsB 557M Test Methods for Tension Testing Wrought andCast Aluminum- and Magnesium-Alloy Products MetricB 830 Specification for Uniform Test Methods and Fre-quencyE 527 Practice for Numbering Metals and Alloys (UNS)2.3 AN
8、SI Standard:ANSI H35.1 American National Standard for Alloy andTemper Designations Systems for Aluminum3ANSI H35.1M American National Standard for Alloy andTemper Systems for Aluminum Metric32.4 NIST Document:NBS Handbook 100Copper Wire Tables43. Terminology3.1 Definitions of Terms Specific to This
9、Standard:3.1.1 lota group of production units, up to 30 000 lb15 000 kg of mass, of one type and size of wire, which wasproduced during the same time period, under similar produc-tion conditions, and is presented for acceptance at the sametime (Explanatory Note 1 and Note 2).3.1.2 production unita c
10、oil, reel, spool, or other packageof wire that represents a single usable length.3.1.3 samplethe production unit or units from which a testspecimen or specimens has been removed, and which isconsidered to have properties representative of the lot.3.1.4 specimena length of wire removed for test purpo
11、ses.4. Ordering Information4.1 Orders for material under this specification shall includethe following information:4.1.1 Quantity of each size,4.1.2 Wire size (see 11.1 and Table 1 or Table 2),4.1.3 Special tension test, if required (see 7.2 and 7.3),4.1.4 Frequency of bending test (see 8.1 and 14.5
12、),4.1.5 Special jointing procedures, if permitted (see 12.2),4.1.6 Place of inspection (see 15.2),4.1.7 Package size and type (see 16.1), and4.1.8 Special package marking, if required (see 16.4).5. Materials and Manufacture5.1 The aluminum wire shall be made from drawing stockmeeting the requirement
13、s of Specification B 233.1This specification is under the jurisdiction of ASTM Committee B01 onElectrical Conductors and is the direct responsibility of Subcommittee B01.07 onConductors of Light Metals.Current edition approved March 15, 2007. Published March 2007. Originallyapproved in 1948. Last pr
14、evious edition approved in 2004 as B 230/B 230M 99(2004).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 ASTM website.3Ava
15、ilable from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.4Available from National Institute of Standards and Technology (NIST), 100Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070, http:/www.nist.gov.1Copyright ASTM International, 1
16、00 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.6. Workmanship, Finish and Appearance6.1 The wire shall be free of imperfections not consistentwith good commercial practice.7. Tensile Properties7.1 Tensile Strength and ElongationThe wire shall con-form to the tensi
17、le strength and elongation requirements setforth in Table 1 or Table 2 (Explanatory Note 3).7.2 When requested by the purchaser, tension tests shall bemade of specimens of wire containing joints made in thedrawing stock or in the wire prior to final drawing. Such testsshall indicate tensile strength
18、s not less than 90 % of the valuesfor individual tests shown in Table 1 or Table 2.7.3 When requested by the purchaser, tension tests ofspecimens containing joints in the finished wire, or in the finaldrawing, if permitted, shall be made. Such tests shall indicatetensile strengths to be not less tha
19、n 11.0 ksi 145 MPa forelectric-butt welded joints, and not less than 21.0 ksi 75 MPafor cold-pressure welded joints and electric-butt, cold-upsetwelded joints.8. Bending Properties8.1 The wire shall be free of brittleness as evidenced by itsability to be coiled or looped around its own diameter with
20、 orwithout a mandrel. No fracture shall occur. Slight surfacechecks shall not constitute cause for rejection.9. Resistivity9.1 The electrical resistivity shall not exceed the valuesshown in Table 3 (Explanatory Note 4).10. Density10.1 For the purpose of calculating linear density, crosssection, and
21、so forth, the density of aluminum 1350 shall betaken as 2705 kg/m30.0975 lb/in.3 at 20C 68F.11. Diameter11.1 The diameter of the wire shall be specified in inches tothe nearest 0.0001 in. or the diameter of the wire shall bespecified in millimetres to the nearest 0.001 mm for wires lessthan 1.000 mm
22、 in diameter, and to the nearest 0.01 mm forwires 1.00 mm in diameter and larger. The actual wire diametershall not vary from the specified diameter by more than thevalues shown in Table 4.12. Joints12.1 No joints shall be made in the finished wire except asprovided in 12.2. Joints may be made in th
23、e drawing stock andin the wire prior to final drawing and shall be in accordancewith good commercial practice.12.2 If agreed upon between the manufacturer and thepurchaser, joints may be made during the final drawing or inthe finished wire by electric-butt welding, cold-pressure weld-ing, or electri
24、c-butt, cold-upset welding, subject to the follow-ing limitations.TABLE 1 Tensile Strength and Elongation RequirementsDiameter, in.Tensile Strength, min ksiElongation in 10 in., min(%)Average fora LotAIndividualTestsAverage fora LotIndividualTests0.0105 to 0.0500 25.0 23.0 . . . . . .0.0501 to 0.060
25、0 29.0 27.0 1.4 1.20.0601 to 0.0700 28.5 27.0 1.5 1.30.0701 to 0.0800 28.0 26.5 1.6 1.40.0801 to 0.0900 27.5 26.0 1.6 1.50.0901 to 0.1000 27.0 25.5 1.6 1.50.1001 to 0.1100 26.0 24.5 1.6 1.50.1101 to 0.1200 25.5 24.0 1.7 1.60.1201 to 0.1400 25.0 23.5 1.8 1.70.1401 to 0.1500 24.5 23.5 1.9 1.80.1501 to
26、 0.1800 24.0 23.0 2.0 1.90.1801 to 0.2100 24.0 23.0 2.1 2.00.2101 to 0.2600 23.5 22.5 2.3 2.2AFor wire diameters within 0.0501 to 0.2600 in., the minimum average tensilestrength for a lot may be estimated from the following logarithmic equation forprocess control purposes to meet the requirements of
27、 this specification: Tensilestrength, ksi = 17.40 3.84 3 ln (diameter of wire, in.). Requirements stated in thetable are to be used for all other purposes.TABLE 2 Tensile Strength and Elongation RequirementsDiameter, mmTensile Strength, min MPaElongation in 250 mm, min(%)Average fora LotAIndividualT
28、estsAverage fora LotIndividualTests0.227 to 1.25 170.0 160.0 . . . . . .1.26 to 1.50 200.0 185.0 1.4 1.21.51 to 1.75 195.0 185.0 1.5 1.31.76 to 2.00 195.0 185.0 1.6 1.42.01 to 2.25 190.0 180.0 1.6 1.52.26 to 2.50 185.0 175.0 1.6 1.52.51 to 2.75 180.0 170.0 1.6 1.52.76 to 3.00 175.0 165.0 1.7 1.63.01
29、 to 3.50 170.0 160.0 1.8 1.73.51 to 3.75 170.0 160.0 1.9 1.83.76 to 4.50 165.0 160.0 2.0 1.94.51 to 5.25 165.0 160.0 2.1 2.05.26 to 6.50 160.0 155.0 2.3 2.2AFor wire diameters within 1.26 to 6.50 mm the minimum average tensilestrength for a lot may be estimated from the following logarithmic equatio
30、n forprocess control purposes to meet the requirements of this specification: TensileStrength, MPa = 205.88 27.14 3 ln (diameter of wire, mm). Requirements statedin the table are to be used for all other purposes.TABLE 3 Electrical Resistivity Requirements at 20C (68F) and Equivalent Copper Resistiv
31、ityANOTE 1The values in boldface are standard; other values are for information only.VolumeConductivityElectrical Resistivity%IACSVolume MassVmm2/m Vin. Vcm Vcmil/ft Vlb/mile2Vg/m2Average for lot 61.2 0.028172 1.1091 2.8172 16.946 434.81 0.076149Individual tests 61.0 0.028265 1.1128 2.8265 17.002 43
32、6.23 0.076399Copper equivalent 100.0 0.017241 0.67879 1.7241 10.371 875.20 0.15328AThe equivalent resistivity values for 100 % IACS conductivity were each computed from the fundamental IEC value (158 Vmm2/m) using conversion factors eachaccurate to at least seven significant figures. Corresponding v
33、alues for aluminum conductivities were derived from these by multiplying by the reciprocal of the conductivityratios and, where applicable, also by the density ratios, both accurate to at least seven significant figures.B 230/B 230M 07212.2.1 For wire sizes from 0.0100 to 0.0555 in. 0.225 to1.25 mm
34、in diameter not more than three such joints shall bepresent in any coil, reel, or spool of the specified nominal mass.12.2.2 For wire sizes greater than 0.0500 in. 1.25 mmdiameter, not more than 10 % of the coils, reels, or spools shallcontain such joints, and no such joint shall be closer than 50 f
35、t15 m to another joint or to either end of the wire. Not morethan two such joints shall be present in any coil, reel or spoolof the specified nominal mass.13. Sampling13.1 SamplingFour test specimens shall be obtained, onefrom each of four production units (Explanatory Note 1)orinaccordance with the
36、 statistical sampling methods as prescribedby Specification B 830.14. Test Methods14.1 DiameterMeasure the diameter of each specimenwith a micrometer caliper graduated in 0.0001-in. incrementsor measure the diameter of each specimen with a micrometercaliper graduated in minimum 0.005 mm increments f
37、or wiresless than 1.00 mm in diameter, or minimum 0.01-mm incre-ments for wires 1.00 mm in diameter and larger. Take twomeasurements at one point, with the second measurementacross the cross-sectional diameter 90 rotated from the firstmeasurement. Average the two measurements to obtain thespecimen d
38、iameter. Should the measured diameter of anyspecimen vary from the specified diameter by an amountgreater than the tolerance permitted by Table 4, the lot shall beconsidered to not meet diameter requirements.14.2 FinishMake a visual surface finish inspection withthe unaided eye (corrective lenses ex
39、cepted). The surface finishshall meet the requirements of 6.1. Should any specimen befound unacceptable, the lot shall be considered to not meetsurface finish requirements.14.3 Tensile strength and elongation may be determinedsimultaneously. Obtain the tensile strength, in accordance withTest Method
40、s B 557 or B 557M, by dividing the maximumload resisted by the tensile specimen by the original cross-sectional area of the specimen, with the tensile stress to beexpressed in ksi MPa. Elongation is the percent increase inlength of the tensile test specimen as measured between gagemarks originally s
41、paced 10 in. 250 mm apart on the speci-men. Elongation measurements are not required for wires0.0500 in. 1.25 mm in diameter. Should any part of thefracture take place outside the elongation gage lines, or ifexamination of the tensile specimen indicates a flaw, the valuesobtained may not be represen
42、tative and a test on anothersection of the specimen may be run (Explanatory Note 6).14.4 Determine the electrical resistivity in accordance withTest Method B 193.14.5 Test ResultsA numerical average for the tensilestrength, elongation, and resistivity of the four specimens shallbe calculated and sha
43、ll be considered the lot average.14.6 Conformance CriteriaTo be considered in conform-ance, the lot average test results shall meet the average for a lotrequirements of Table 1 or Table 2 and Table 3, and the testresults of each specimen shall meet the individual testsrequirements of Table 1 or Tabl
44、e 2 and Table 3 unless otherwisespecified.14.6.1 If the lot average results are in conformance, and allof the individual specimen results are in conformance, the lotshall be considered in conformance.14.6.2 If the lot average result for one or more of the testedproperties is not in conformance and o
45、ne or more of theindividual specimen results is also not in conformance, the lotshall be considered not in conformance.14.6.3 If the lot average results are in conformance, but oneor more of the individual specimen results are not in conform-ance, the lot shall be considered in conformance except th
46、at theproduction unit or units represented by the non-conformingspecimen or specimens shall be rejected.14.6.4 If the lot average results for one or more of the testedproperties is not in conformance, but all the individual speci-men results are in conformance, then additional test specimensand test
47、s shall be required as follows:14.6.4.1 An additional six test specimens shall be obtained,one each from six production units other than the fouroriginally sampled. Tests shall be run on the six additionalspecimens, and a numerical average of the ten tested specimensshall be calculated and considere
48、d the lot average.14.6.4.2 If the ten specimen lot average results are inconformance, and all ten of the individual specimen results arein conformance, the lot shall be considered in conformance.14.6.4.3 If the ten specimen lot average results for one ormore of the tested properties are not in confo
49、rmance, or if oneor more of the ten individual specimen results are not inconformance, the lot shall be considered not in conformance.14.6.5 In the event a lot is rejected in accordance with14.6.2 or 14.6.4.3, production units making up that lot may beindividually tested. Acceptance of individual production unitsfrom a rejected lot shall be dependent on the individualspecimen test results meeting the average for a lot requirementsof Table 1 or Table 2 and Table 3.14.7 Bending (Brittleness)Specimens from any produc-tion u
