ASTM B941-2016 Standard Specification for Heat Resistant Aluminum-Zirconium Alloy Wire for Electrical Purposes《电气用耐热铝锆合金丝的标准规格》.pdf
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1、Designation: B941 16Standard Specification forHeat Resistant Aluminum-Zirconium Alloy Wire for ElectricalPurposes1This standard is issued under the fixed designation B941; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of
2、 last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers heat resistant aluminum-zirconium alloy round wire for electrical purposes. There is afamil
3、y of aluminum-zirconium alloys that are used for heat-resistance (that is, resist annealing), which differ by zirconiumcontent, tensile strength, electrical conductivity, and maximumuse temperature. This standard covers one currently commer-cially applicable alloy from this family.1.2 The values sta
4、ted 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 to address all of thesafety concerns, if any, associated with its us
5、e. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 The following documents of the issue in effect on thedate of material purchase form a part
6、of this specification to theextent referenced herein.2.2 ASTM Standards:2B193 Test Method for Resistivity of Electrical ConductorMaterialsB557 Test Methods for Tension Testing Wrought and CastAluminum- and Magnesium-Alloy ProductsB830 Specification for Uniform Test Methods and Fre-quency3. Terminolo
7、gy3.1 Definitions of Terms Specific to This Standard:3.1.1 lota group of production units, up to 30 000 1b 15000 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 (Explanator
8、y Notes 1 and 2).3.1.2 production unita coil, reel, spool, or other packageof wire that represents a single usable length.3.1.3 samplethe production unit(s) from which a testspecimen(s) has been removed, and which is considered tohave properties representative of the lot.3.1.4 specimena length of wi
9、re removed for test purposes.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 11.2),4.1.3 Special tension test, if required (see 6.1, 6.2 and 7.1),4.1.4 Frequency of bending test (
10、see 8.1 and 14.7),4.1.5 Special jointing procedures, if permitted (see 12.1),4.1.6 Place of inspection (see 16.2),4.1.7 Package size and type (see 17.1),4.1.8 Special package marking, if required (see 17.4).5. Materials and Manufacture5.1 The aluminum wire shall be made from drawing stock.The rod sh
11、all have properties such that once drawn into wire,the wire properties set forth in Table 1 are met.5.2 The wire shall be aluminum-zirconium alloy of suchquality and purity that the finished product shall have theproperties and characteristics prescribed in this specification,including tensile, elon
12、gation, heat resistance properties, bend-ing properties, and electrical resistivity. Chemical analysis of aspecific alloy is not a requirement of this specification unlessdefinite agreement is reached between the manufacturer andthe purchaser on individual orders.6. Tensile Properties6.1 Tensile Str
13、ength and ElongationThe wire shall con-form to the tensile strength and elongation requirements setforth in Table 1 (Explanatory Note 3).1This specification is under the jurisdiction of ASTM Committee B01 onElectrical Conductors and is the direct responsibility of Subcommittee B01.07 onConductors of
14、 Light Metals.Current edition approved April 1, 2016. Published May 2016. Originallyapproved in 2010. Last previous edition approved in 2010 as B941 10. DOI:10.1520/B0941-16.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For
15、Annual Book of ASTMStandards volume information, 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 When requested by the purchaser, tension tests shall bemade of specim
16、ens of wire containing joints made in thedrawing stock or in the wire prior to final drawing. Such testsshall indicate tensile strengths not less than 90 % of the valuesfor individual tests shown in Section 6.1.7. Heat Resistance7.1 Heat resistance tests (see section 14.4) shall indicatestrengths no
17、t less than 90 % of the values for individual testsshown in Table 1. For the smallest size group, heat resistancevalues shall not be less than 90 % of the minimum strengthspecification. (Explanatory Note 5).8. Wrap Test8.1 The wire shall be free of brittleness as evidenced by itsability to be coiled
18、 or looped at least six times around its owndiameter in a close helix, with or without a mandrel (seesection 14.7). No fracture shall occur. Slight surface checksshall not constitute cause for rejection.9. Resistivity9.1 Electrical resistivity, determined on samples of drawnwire selected and tested
19、in accordance with Test Method B193,shall not exceed 17.28 .cmil/ft (0.02873 .mm2/m) at 20C(68F) (Explanatory Note 4).9.2 Equivalent conductivity; the wire shall meet or exceed60.0 % IACS at 20C (68F).9.3 When resistance measurements are made at tempera-tures other than 20C (68F), corrections shall
20、be based on atemperature coefficient of resistance of 0.0040/C (0.0022/F)(see Table 2).10. Density10.1 For the purpose of calculating mass, cross-section, andso forth, the density of aluminum-zirconium alloy shall betaken as 2700 kg/m30.0970 Ib/in.3 at 20C 68F.11. Diameter11.1 The diameter of the wi
21、re shall be specified in inches tothe nearest 0.0001 in. or the diameter of the wire shall bespecified in millimeters to the nearest 0.001 mm for wires lessthan 1.000 mm in diameter, and to the nearest 0.01 mm forwires 1.00 mm in diameter and larger.11.2 The actual wire diameter shall not vary from
22、thespecified diameter by more than the values shown in Table 3.12. Joints12.1 Unless otherwise specified at the time of placing theorder, wire shall be supplied in one continuous length of reel,coil, or spool. Joints may be made in the drawing stock or wireprior to final drawing by electric-butt wel
23、ding, cold-pressurewelding, or by electric-butt, cold-upset welding.12.2 If agreed upon between the manufacturer and thepurchaser, joints may be made during the final drawing or inTABLE 1 Tensile Strength and Elongation RequirementsDiameter Tensile Strength HeatResistanceElongationin 10 in.(250 mm)i
24、n. (mm) min ksi min (MPa) (%) min (%)0.050-0.128 (1.25-3.25) 24.0 (165) 90 % ofMinimum2%0.128-0.154 (3.25-3.91) 23.5 (162) 90 % 2 %0.154-0.185 (3.91-4.70) 23.0 (159) 90 % 2 % 0.185 ( 4.70) 22.5 (155) 90 % 2 %TABLE 2 Temperature Correction Factors for ElectricalResistanceResistance Temperature (C) Mu
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