1、Designation: B398/B398M 14B398/B398M 15Standard Specification forAluminum-Alloy 6201-T81 and 6201-T83 Wire for ElectricalPurposes1This standard is issued under the fixed designation B398/B398M; the number immediately following the designation indicates the yearof original adoption or, in the case of
2、 revision, the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers aluminum-alloy 6201-T81 (hard, solution heat-treated, cold worked, an
3、d artificially aged) and6201-T83 (hard, higher conductivity, solution heat-treated, cold worked, and artificially aged) round wire for electrical purposes.NOTE 1The alloy and temper designations conform to ANSI H35.1 and H35.1M. Aluminum-alloy 6201 corresponds to unified numbering systemalloy A96201
4、 in accordance with Practice E527.1.2 The values stated in inch-pound or SI units are to be regarded separately as standard. The values in each system are not exactequivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may resultin nonconf
5、ormance with the specification.1.2.1 For density, resistivity and temperature, the values stated in SI units are to be regarded as standard.2. Referenced Documents2.1 The following documents of this issue in effect on date of material purchase form a part of this specification to the extentreference
6、d herein.2.2 ASTM Standards:2B193 Test Method for Resistivity of Electrical Conductor MaterialsB557 Test Methods for Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy ProductsB557M Test Methods for Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products (Metric)B830 Spec
7、ification for Uniform Test Methods and FrequencyE527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)2.3 ANSI Standard:3ANSI H35.1 American National Standard for Alloy and Temper Designation Systems for AluminumANSI H35.1M American National Standard Alloy and Temper Des
8、ignation Systems for Aluminum Metric2.4 NIST Standard:4NBS Handbook 100 Copper Wire Tables3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 lotA group of production units, up to 30 000 lb 15 metric tons of mass, of one type and size of wire, which wasproduced during the same tim
9、e period, under similar production conditions, and is presented for acceptance at the same time(Explanatory Notes 1 and 2).3.1.2 production unitA coil, reel, spool, or other package of wire that represents a single usable length.3.1.3 sampleThe production unit or units from which a test specimen or
10、specimens has been removed, and which is consideredto have properties representative of the lot.3.1.4 specimenA length of wire removed for test purposes.1 This specification is under the jurisdiction of ASTM Committee B01 on Electrical Conductors and is the direct responsibility of Subcommittee B01.
11、07 on Conductorsof Light Metals.Current edition approved April 1, 2014May 1, 2015. Published April 2014May 2015. Originally approved in 1963. Last previous edition approved in 20132014 asB398 02 (2013).B398 14. DOI: 10.1520/B0398_B0398M-14.10.1520/B0398_B0398M-15.2 For referencedASTM standards, visi
12、t theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standardsstandards Document Summary page on the ASTM website.3 Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor
13、, New York, NY 10036, http:/www.ansi.org.4 Available from National Technical Information Service (NTIS), 5285 Port Royal Rd., Springfield, VA 22161, http:/www.ntis.gov.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes hav
14、e been made 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 doc
15、ument.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14. 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: diameter in inches or i
16、n millimetres (see 11.1),4.1.3 Special tension test, if required (see 7.2 and 7.3),4.1.4 Frequency of bending test (see 8.2),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 re
17、quired (see 16.4).5. Material and Manufacture5.1 The aluminum alloy used shall be of such quality that wire produced from it can comply with the requirements as tochemical composition, tensile and elongation properties, bending properties, and electrical resistivity prescribed in thisspecification.6
18、. Chemical Composition6.1 The wire shall be made from aluminum alloy 6201 as designated in ANSI H35.1 and H35.1M. The material shall conformto the chemical composition prescribed in Table 1.7. Tensile Properties7.1 The heat-treated, drawn, and artificially aged wire when sampled in accordance with S
19、ection 14 of this specification andtested in accordance with Test Methods B557 and B557M for 6201-T81 shall conform to the tensile requirements prescribed inTable 2 and for 6201-T83 to the tensile requirements of Table 3 (Explanatory Note 3).7.2 When requested by the purchaser, tension tests shall b
20、e made on specimens of heat-treated, drawn, and artificially aged wirecontaining joints made in the wire after heat treatment and prior to final drawing. Such tests shall show not less than 90 % of theminimum strength specified in Table 2 (for 6201-T81) or Table 3 (for 6201-T83) for individual test.
21、7.3 When requested by the purchaser, tension tests shall be made on specimens of heat-treated, drawn, and artificially aged wirecontaining joints made in the finished wire or during the final drawing as permitted in 12.2. Such tests shall show the tensilestrength to be not less than 42 ksi (290 MPa)
22、 (for 6201-T81) or 32 ksi (220 MPa) (for 6201-T83) for cold-pressure welds and forelectric-butt, cold-upset welds and not less than 15 ksi (100 MPa) for electric-butt welds. Electric-butt welds in addition shall showa minimum elongation of 6 % in 10 in. 250 mm.8. Bending Properties8.1 The wire shall
23、 be free of brittleness as evidenced by its ability to be coiled or looped around its own diameter either withor without a mandrel. No fracture shall occur. Slight surface checks shall not constitute cause for rejection.8.2 Any coil or reel may be tested in accordance with 8.1, but the frequency of
24、production sampling and testing shall be byagreement between the manufacturer and the purchaser.TABLE 1 Chemical RequirementsAElement Composition, %Copper, max 0.10Iron, max 0.50Silicon 0.500.9Manganese, max 0.03Magnesium 0.60.9Zinc, max 0.10Chromium, max 0.03Boron, max 0.06Other elements, each, max
25、 0.03Other elements, total, max 0.10Aluminum remainderA Analysis shall regularly be made only for the elements specified in this table. If,however, the presence of other elements is suspected or indicated in amountsgreater than the specified limits, further analysis shall be made to determine thatth
26、ese elements are not present in amounts in excess of the specified limits forother elements.B398/B398M 1529. Resistivity9.1 Electrical resistivity, determined on samples selected in accordance with Section 14 of this specification and tested inaccordance with Test Method B193, shall not exceed 0.032
27、841 mm2/m at 20C 68F (for 6201-T81) and shall not exceed0.0325300.029984 mm2/m at 20C 68F (for 6201-T83) (Explanatory Note 2 and Table 4).10. Density10.1 For the purpose of calculating mass, mass per unit length, mass cross sections, etc., the density of aluminum-alloy 6201shall be taken as 2690 kg/
28、m3 (0.097 lb/in.3) at 20C.11. Diameter and Permissible Variations11.1 The diameter of the wire shall be expressed in decimal fractions of an inch using four places of decimals or in millimetresusing two places of decimals.11.2 Ten percent, but not less than five coils or spools (or all if the lot is
29、 less than five) from any lot of wire shall be gaged atthree places. If the material is in coil form, one gaging shall be made near each end and one near the middle.11.3 The permissible variations in diameter are as follows:Specified Diameter, in. mmPermissible Variations of MeanDiameter from Specif
30、iedDiameter,plus and minus0.1878 to 0.10004.75 to 2.55, incl1 %Under 0.1000 to 0.06122.55 to 1.50, incl0.0010 in. 0.03 mm12. Joints12.1 Unless otherwise specified at the time of placing the order, wire shall be supplied in one continuous length of reel, coil,or spool. Joints may be made in the drawi
31、ng stock or wire after heat treatment and prior to final drawing by electric-butt welding,by cold-pressure welding, or by electric-butt, cold-upset welding in accordance with good commercial practice. Unless otherwisespecified, no joints shall be made during final drawing or in the finished wire.TAB
32、LE 2 Tensile Requirements (6201-T81)Diameter,in. mmTensile Strength, min Elongation in 10in. 250 mm forIndividual Tests,min, %Averagefor a lotIndividualTestsOver Through ksi (MPa) ksi (MPa)0.1280 3.25 0.1878 4.75 46 (315) 44 (305) 3.00.0610 1.50 0.1280 3.25 48 (330) 46 (315) 3.0TABLE 3 Tensile Requi
33、rements (6201-T83)Diameter,in. mmTensile Strength, min Elongation in 10in. 250 mm forIndividual Tests,min, %Averagefor a lotIndividualTestsOver Through ksi (MPa) ksi (MPa)0.0610 1.50 0.1878 4.75 36 (250) 34 (235) 3.5TABLE 4 Equivalent Resistivity Values at 20C 68FAMaterial Volume Conductivity% IACSR
34、esistivity ConstantsAVolumecmil/ft mm2/mCopper 100 10.371 0.017241Aluminum 61.0 17.002 0.02826557.7 19.567 0.03253057.5 18.036 0.02998453.5 19.385 0.03222752.5 19.755 0.032841A The equivalent resistivity values for 100 % IACS (soft copper) were eachcomputed from the fundamental IEC value 158 mm2m us
35、ing conversion factorseach accurate to at least seven significant figures. Corresponding values for otherconductivities (aluminum) were derived from these by multiplying by the reciprocalof the conductivity ratios accurate to at least seven significant figures.B398/B398M 15312.2 If agreed upon betwe
36、en the manufacturer and the purchaser, joints may be made during final drawing or in the finishedwire by cold-pressure welding, by electric-butt, cold-upset welding, or by electric-butt welding. Following welding, electric-buttwelds shall be annealed for a distance of at least 6 in. 150 mm on each s
37、ide of the weld. Not more than 10 % of the reels, coils,or spools shall contain such joints and no joint shall be closer than 50 ft 15 m to another or to either end of the wire, and notmore than two such joints shall be present in any reel, coil, or spool of the nominal specified mass.13. Workmanshi
38、p, Finish, and Appearance13.1 The wire shall be free of all imperfections not consistent with good commercial practice.14. Sampling, Testing, and Conformance Criteria14.1 SamplingFour test specimens shall be obtained, one from each of four production units or in accordance withSpecification B830 (se
39、e Explanatory Note 2).14.2 Tensile strength, elongation, and resistivity:14.2.1 Test Methods:14.2.1.1 Tensile strength and elongation may be determined simultaneously. Obtain the tensile strength, using Test MethodsB557, by dividing the maximum load resisted by the tensile specimen, with the tensile
40、 stress to be expressed in kips (1000 lbf)per square inch (ksi). Elongation is the percent increase in length of the tensile specimen as measured between gage marksoriginally spaced 10 in. 254 mm apart on the specimen. Elongation measurements are not required for wire less than 0.0500 in.in diameter
41、. Should any part of the fracture take place outside the elongation gage lines, or if examination of the tensile specimenindicates a flaw, the values obtained may not be representative and a test on another section of the specimen may be run.14.2.1.2 Determine the electrical resistivity using Test M
42、ethod B193.14.2.2 Test ResultsA numerical average for the tensile strength, elongation, and resistivity of the four specimens shall becalculated and shall be considered the lot average.14.2.3 Conformance CriteriaTo be considered in conformance, the lot average test results shall meet the “average fo
43、r a lot”requirements of Tables 1 and 2, and the test results of each specimen shall meet the “individual tests” requirements of Tables 2and 4 unless otherwise specified.14.2.3.1 If the lot average results are in conformance, and all of the individual specimen results are in conformance, the lot shal
44、lbe considered in conformance.14.2.3.2 If the lot average result for one or more of the tested properties is not in conformance and one or more of the individualspecimen results is also not in conformance, the lot shall be considered not in conformance.14.2.3.3 If the lot average results are in conf
45、ormance, but one or more of the individual specimen results are not in conformance,the lot shall be considered in conformance except that the production unit or units represented by the nonconforming specimenor specimens shall be rejected.14.2.3.4 If the lot average results for one or more of the te
46、sted properties are not in conformance, but all the individual specimenresults are in conformance, then additional test specimens and tests shall be required as follows:(1) An additional six test specimens shall be obtained, one each from six production units other than the four originallysampled. T
47、est shall be run on the six additional specimens, and a numerical average of the ten tested specimens shall be calculatedand considered the lot average.(2) If the ten specimen lot average results are in conformance, and all ten of the individual specimen results are in conformance,the lot shall be c
48、onsidered in conformance.(3) If the ten specimen lot average results for one or more of the tested properties are not in conformance, or if one or moreof the ten individual specimen results are not in conformance, the lot shall be considered not in conformance.(4) In the event a lot is rejected in a
49、ccordance with 14.2.3.2 or (3), production units making up that lot may be individuallytested. Acceptance of individual production units from a rejected lot shall be dependent on the individual specimen test resultsmeeting the “average for a lot” requirements of Tables 2 and 4.14.3 Bending (brittleness)Specimens from any production unit may be tested, with the frequency of sampling and testing tobe agreed upon between the manufacturer and the purchaser.15. Inspection15.1 Unless other
