ASTM B502 B502M-2010e1 Standard Specification for Aluminum-Clad Steel Core Wire for Use in Overhead Electrical Aluminum Conductors《用于高架铝电导线的铝-复合钢芯线材标准规格》.pdf
《ASTM B502 B502M-2010e1 Standard Specification for Aluminum-Clad Steel Core Wire for Use in Overhead Electrical Aluminum Conductors《用于高架铝电导线的铝-复合钢芯线材标准规格》.pdf》由会员分享,可在线阅读,更多相关《ASTM B502 B502M-2010e1 Standard Specification for Aluminum-Clad Steel Core Wire for Use in Overhead Electrical Aluminum Conductors《用于高架铝电导线的铝-复合钢芯线材标准规格》.pdf(4页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: B502/B502M 101Standard Specification forAluminum-Clad Steel Core Wire for Use in OverheadElectrical Aluminum Conductors1This standard is issued under the fixed designation B502/B502M; the number immediately following the designation indicates the yearof original adoption or, in the case
2、 of 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.1NOTEDesignation was corrected editorially in October 2013.1. Scope1.1 This specification covers round,
3、aluminum-clad steelcore wire with two designations of tensile strengths, AW2(Normal Strength) and AW3 (High Strength).1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard. The values stated ineach system may not be exact equivalents; therefore, eachsy
4、stem shall be used independently of the other. Combiningvalues from the two systems may result in non-conformancewith the standard.1.2.1 For conductor sizes designated by AWG, the require-ments in SI units have been numerically converted fromcorresponding values stated or derived in inch-pound units
5、. Forconductor sizes designated by SI units only, the requirementsare stated or derived in SI units.2. Referenced Documents2.1 The following documents of the issue in effect on dateof material purchase form a part of this specification to theextent referenced herein.2.2 ASTM Standards:2B193 Test Met
6、hod for Resistivity of Electrical ConductorMaterialsE8 Test Methods for Tension Testing of Metallic Materials3. Ordering Information3.1 Orders for material under this specification shall includethe following information:3.1.1 Quantity of each size,3.1.2 Wire size: diameter in inches (see 6.1),3.1.3
7、Core Wire Strength, AW2 (Normal Strength) or AW3(High Strength) (see Table 1 and Table 2),3.1.4 Package size: (see 17.1),3.1.5 Special packaging and package marking if required(see 16.1), and3.1.6 Place of inspection if other than place of manufacture(see 14.1).4. Materials and Manufacture4.1 The ba
8、se metal shall be steel produced by the open-hearth, electric-furnace, or basic-oxygen process and shall beof such composition that the finished clad wire shall have theproperties and characteristics prescribed in this specification.4.2 The aluminum used for cladding shall have a purity andquantity
9、sufficient to meet thickness and resistance require-ments of this specification (see 7.1 and 9.1).5. Tensile Properties5.1 RequirementsThe aluminum-clad steel core wire shallconform to the tensile requirements prescribed in Table 1 andTable 2. Purchasers of core intended for use in conductorconstruc
10、tions with annealed aluminum wires, such as ACSS/AW3, ACSS/TW/AW3 may request the stranded steel core becompliant only with ultimate tensile strength and may waivecompliance with the 1 % extension tensile requirement. Thisuse of the ultimate tensile requirement as an alternate to the 1% extension re
11、quirement shall be by agreement between thepurchaser and producer and shall be noted on product compli-ance documentation. In computing stress at 1 % extension andultimate tensile strength, the actual diameter of the finishedwire shall be used.5.2 Elongation TestThe elongation shall be determined by
12、an extensometer suitable for measuring elongation in 10.0 in.250 mm and equipped with a vernier or other instrumentreading to 0.001 in. 0.025 mm. It shall be attached to the testspecimen at a load equal to the initial tensile stress shown inTable 3 and Table 4. At this load the extensometer shall be
13、adjusted to the initial setting shown in Table 3 and Table 4.Upon application of further load, the tension shall be read at anextensometer reading of 1.0 % to determine conformance with1This specification is under the jurisdiction of ASTM Committee B01 onElectrical Conductors and is the direct respo
14、nsibility of Subcommittee B01.06 onComposite Conductors.Current edition approved April 1, 2010. Published May 2010. Originallyapproved in 1970. Last previous edition approved in 2007 as B502 02 (2007).DOI: 10.1520/B0502_B0502M-10E01.2For referenced ASTM standards, visit the ASTM website, www.astm.or
15、g, orcontact ASTM Customer Service at serviceastm.org. For 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 States1the requiremen
16、t in Table 1 and Table 2. Further elongation shallbe observed while applying a tension load to the specimen. Theelongation thus determined shall be not less than 1.5 % in 10.0in. 250 mm. A test in which the extensometer reading is lessthan 1.5 % shall be disregarded if the fracture occurs less than1
17、.0 in. 25 mm from either attachment. In this case, anotherspecimen from the same reel or coil shall be tested.5.3 The tension tests shall be made in accordance with TestMethods E8. The method for determining elongation is de-scribed in the Procedures Section of Test Methods E8.6. Dimensions and Perm
18、issible Variations6.1 The size shall be expressed by the wire diameter indecimals of an inch to the nearest 0.0001 in. 0.003 mm.6.2 Within the range of diameters included in Table 5 thewire shall not vary from the nominal diameter by more than theamounts shown in this table. In computing permissible
19、variations, diameters shall be rounded to the nearest 0.0001 in.0.003 mm.6.3 If accessible, one measurement shall be taken near eachend and one near the middle of the coil or reel. In the case ofreels, the center and one end may not be accessible and theprescribed measurement shall be taken along th
20、e length of theaccessible material. If any of the selected coils or reels fail toconform to the requirements as prescribed in 6.2, all coils orreels shall be measured in the manner specified.7. Thickness of Aluminum7.1 The aluminum thickness at any point shall be not lessthan 10 % of the nominal wir
21、e radius. Measurements shall beread to the nearest 0.001 in. 0.03 mm. In determining therequired or measured thickness, fractions of 0.0005 in. 0.013mm or less shall be dropped and for fractions of greater than0.0005 in. 0.013 mm, the next larger 0.001 in. 0.003 mmshall be used.7.2 Measurements shal
22、l be made by using suitable electricalindicating instruments operating on the permeameter principle,or by direct measurement. For referee purposes, direct mea-surement shall be used to determine aluminum thickness onspecimens taken from the ends of the coils.8. Density8.1 For the purpose of calculat
23、ing mass, cross sections, etc.,the density of the wire shall be taken as 0.2381 lb/in.3(6.590g/cm3) at 20C.9. Resistance9.1 The electrical resistance of the wire shall be determinedby resistance measurements and maximum allowable resis-tance shall be based on the nominal diameter of the wire andthe
24、resistivity value of 51.01 cmil/ft 0.08480 mm2/m at20C. Electrical resistance is calculated by the followingequations:Resistance /ft! 5 R/S (1)TABLE 1 Tensile Requirements for Normal Strength (AW2) ForACSR/AW2, ACSR/TW/AW2 and ACSS/AW2, ACSR/TW/AW2 TypeConductorsNominalDiameter,in. mmStress at 1.0 %
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