1、Designation: B236 07 (Reapproved 2015)Standard Specification forAluminum Bars for Electrical Purposes (Bus Bars)1This standard is issued under the fixed designation B236; 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.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope*1.1 This specification covers Alumi
3、num 1350 bar for elec-tric conductors in the tempers shown in Table 1.1.2 Aluminum and temper designations are in accordancewith ANSI H35.1/H35.1(M). The equivalent Unified Number-ing System designation is A91350 in accordance with PracticeE527.NOTE 1For Alloy 6101 bus conductors, refer to Specifica
4、tion B317/B317M.NOTE 2Prior to 1975, Aluminum 1350 was designated as ECaluminum.1.3 Acomplete metric companion to Specification B236 hasbeen developedB236M; therefore, no metric equivalentsappear in this specification.1.4 For acceptance criteria for inclusion of new aluminumand aluminum alloys in th
5、is specification, see Annex A2.2. Referenced Documents2.1 The following documents of the issue in effect on dateof order acceptance form a part of this specification to theextent referenced herein:2.2 ASTM Standards:2B193 Test Method for Resistivity of Electrical ConductorMaterialsB317/B317M Specifi
6、cation for Aluminum-Alloy ExtrudedBar, Rod, Tube, Pipe, Structural Profiles, and Profiles forElectrical Purposes (Bus Conductor)B557 Test Methods for Tension Testing Wrought and CastAluminum- and Magnesium-Alloy ProductsB660 Practices for Packaging/Packing of Aluminum andMagnesium ProductsB666/B666M
7、 Practice for Identification Marking of Alumi-num and Magnesium ProductsB881 Terminology Relating to Aluminum- and Magnesium-Alloy ProductsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE34 Test Methods for Chemical Analysis of Aluminum andAluminum-
8、Base AlloysE55 Practice for Sampling Wrought Nonferrous Metals andAlloys for Determination of Chemical CompositionE290 Test Methods for Bend Testing of Material for Ductil-ityE527 Practice for Numbering Metals and Alloys in theUnified Numbering System (UNS)E607 Test Method for Atomic Emission Spectr
9、ometricAnalysis Aluminum Alloys by the Point to Plane Tech-nique Nitrogen Atmosphere (Withdrawn 2011)3E716 Practices for Sampling and Sample Preparation ofAluminum and Aluminum Alloys for Determination ofChemical Composition by Spectrochemical AnalysisE1004 Test Method for Determining Electrical Con
10、ductivityUsing the Electromagnetic (Eddy-Current) MethodE1251 Test Method for Analysis of Aluminum and Alumi-num Alloys by Spark Atomic Emission Spectrometry2.3 ANSI Standards:H35.1/H35.1(M) Alloy and Temper Designation Systems forAluminumH35.2 Dimensional Tolerances forAluminum Mill Products2.4 Mil
11、itary Standard:Available from StandardizationDocuments Order Desk, DODSSP, Bldg. 4, Section D, 700Robbins Ave., Philadelphia, PA 19111-5098, http:/www.dodssp.daps.mil.MIL-STD-129 Marking for Shipment and Storage2.5 Federal Standard:Fed. Std. No. 123 Marking for Shipment (Civil Agencies)3. Terminolog
12、y3.1 Definitions: Refer to Terminology B881 for definitionsof product terms used in this specification.1This specification is under the jurisdiction of ASTM Committee B07 on LightMetals and Alloys and is the direct responsibility of Subcommittee B07.03 onAluminum Alloy Wrought Products.Current editi
13、on approved Oct. 1, 2015. Published October 2015. Originallyapproved in 1948. Last previous edition approved in 2007 as B236 07. DOI:10.1520/B0236-07R15.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMSt
14、andards 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.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box
15、 C700, West Conshohocken, PA 19428-2959. United States13.2 Definitions of Terms Specific to This Standard:3.2.1 capable ofthe term capable of as used in thisspecification means that the test need not be performed by theproducer of the material. However, should testing by thepurchaser establish that
16、the material does not meet theserequirements, the material shall be subject to rejection.4. Ordering Information4.1 Orders for material to this specification shall include thefollowing information:4.1.1 This specification designation (which includes thenumber, the year, and the revision letter, if a
17、pplicable),4.1.2 Quantity in pieces or pounds,4.1.3 Temper (8.1),4.1.4 Edge contour (Section 12),4.1.5 Diameter for rounds; distance across flats for square-cornered squares, hexagons, or octagons; width and depth forsquare-cornered rectangles,4.1.6 Length (specific or stock) (Section 14),4.2 Additi
18、onally, orders for material to this specificationshall include the following information when required by thepurchaser:4.2.1 Whether inspection or witness of inspection and testsby the purchasers representative is required prior to materialshipment (16.1),4.2.2 Whether marking for identification is
19、required (18.1),4.2.3 Whether Practices B660 applies and, if so, the levelsof preservation, packaging, and packing required (19.3), and4.2.4 Whether certification of the material by the producer isrequired (Section 20).5. Manufacture5.1 The products covered by this specification shall beproduced by
20、extruding or rolling, at the option of the producer,provided that the production method results in material thatmeets all requirements of this specification.5.2 Bars in the H12 temper shall be furnished with a rolledmill finish; bars in the H111 temper, with an as-extruded millfinish; and bars in th
21、e H112 temper, with a rolled mill finishexcept that the edges shall be as sawed.6. Responsibility for Quality Assurance6.1 Responsibility for Inspection and TestsUnless other-wise specified in the contract or purchase order, the producer isresponsible for the performance of all inspection and testre
22、quirements specified herein. Except as otherwise specified inthe contract or order, the producer may use his own or anyother suitable facilities for the performance of the inspectionand test requirements specified herein, unless disapproved bythe purchaser. The purchaser shall have the right to perf
23、ormany of the inspections and tests set forth in this specificationwhere such inspections are deemed necessary to assure thatmaterial conforms to prescribed requirements.6.2 Lot DefinitionAn inspection lot shall consist of anidentifiable quantity of material of the same aluminumdesignation, temper,
24、and thickness subjected to inspection atone time.7. Chemical Composition Requirements7.1 The material shall conform to the composition in Table2. Conformance shall be determined by the producer byanalyzing samples taken at the time the ingots or continuouslycast bars are poured, or samples taken fro
25、m the finished orsemifinished product. If the producer has determined thecomposition of the material during the course of manufacture,he shall not be required to sample and analyze the finishedproduct.NOTE 3It is standard practice in the United States aluminum industryto determine conformance to the
26、 composition limits prior to furtherprocessing of ingots into wrought products. Due to the continuous natureof the process, it is not practical to keep a specific ingot analysis identifiedwith a specific quantity of finished material.7.2 Number of SamplesThe number of samples taken fordetermination
27、of chemical composition shall be as follows:7.2.1 When samples are taken at the time the ingots arepoured, at least one sample shall be taken for each group ofingots poured simultaneously from the same source of moltenmetal.7.2.2 When samples are taken from the finished or semifin-ished product, a s
28、ample shall be taken to represent each 4000TABLE 1 Tensile Property LimitsA,BTemperSpecifiedThickness, in.TensileStrength,min, ksiYield Strength(0.2 % offset),min, ksiH12 0.1251.000 12.0 8.0H112 0.1250.499 11.0 6.00.5001.000 10.0 4.01.0013.000 9.0 3.5H111 All 8.5 3.5AFor purposes of determining conf
29、ormance with this specification, each value fortensile strength and yield strength shall be rounded to the nearest 0.1 ksi inaccordance with the rounding method of Practice E29.BSee Annex A1.TABLE 2 Chemical Composition LimitsAElement Composition, %Silicon, max 0.10Iron, max 0.40Copper, max 0.05Mang
30、anese, max 0.01Chromium, max 0.01Zinc, max 0.05Boron, max 0.05Gallium, max 0.03Vanadium + titanium, total, max 0.02Other elements, each,Bmax 0.03Other elements, total,B,Cmax 0.10Aluminum,Dmin 99.50AAnalysis shall be made for the elements for which limits are shown in this table.BOthers includes all
31、unlisted metallic elements. The producer may analyzesamples for trace elements not specified in the specification. However, suchanalysis is not required and may not cover all metallic Others elements. Shouldany analysis by the producer or the purchaser establish that an Others elementexceeds the lim
32、it of Each or that the aggregate of several Others elementsexceeds the limit of Total, the material shall be considered non-conforming.COther ElementsTotalshallbethesumofunspecifiedmetallicelements0.010 %or more, rounded to the second decimal before determining the sum.DThe aluminum content shall be
33、 calculated by subtracting from 100.00 % the sumof all metallic elements present in amounts of 0.010 % or more each, rounded tothe second decimal before determining the sum.B236 07 (2015)2lb, or fraction thereof, in the shipment, except that not morethan one sample shall be required per piece.7.3 Me
34、thods of SamplingSamples for determination ofchemical composition shall be taken in accordance with one ofthe following methods:7.3.1 Samples for chemical analysis shall be taken from thematerial by drilling, sawing, milling, turning, or clipping arepresentative piece or pieces to obtain a prepared
35、sample ofnot less than 75 g. Sampling shall be in accordance withPractice E55.7.3.2 Sampling for spectrochemical analysis shall be inaccordance with Practices E716. Samples for other methods ofanalysis shall be taken by methods suitable for the form ofmaterial being analyzed and the type of analytic
36、al methodused.7.4 Methods of AnalysisThe determination of chemicalcomposition shall be made in accordance with suitable chemi-cal (Test Methods E34) or spectrochemical (Test MethodsE607 and E1251) methods. Other methods may be used onlywhen no published ASTM method is available. In case ofdispute, t
37、he methods of analysis shall be agreed upon betweenthe producer and purchaser.8. Tensile Properties8.1 LimitsThe bars shall conform to the requirements fortensile properties as specified in Table 1.8.2 Number of SpecimensOne tension test specimen shallbe taken from a random bar representing each 300
38、0 lb of bar,or fraction thereof, of the same temper, thickness, and width inthe shipment.8.3 Test MethodsThe tension test shall be made in accor-dance with Test Methods B557.9. Bend Properties9.1 Limits:9.1.1 Flatwise BendBars in the H12, and H111, and H112tempers shall be capable of being bent flat
39、wise at roomtemperature, through an angle of 90 around a pin or mandrelhaving a radius equal to the thickness of the specimen, withoutcracking or evidence of slivers or other imperfections. For aflatwise bend, the pin or mandrel shall be 90 from the working(extrusion or rolling) direction, and acros
40、s the greater (width)dimension of the bar. The required 90 bend shall be in theworking (extrusion or rolling) direction. This is a longitudinalbend as defined and shown in Test Methods E290, Fig. 1.9.1.2 Edgewise BendBars in the H12 and H111 temperswhose width-to-thickness ratios are not in excess o
41、f 12 andwhose width is 4 in. or less, shall be capable of being bent atroom temperature edgewise 90 around a mandrel having theradius shown in Table 3 without cracking or localized thinningto less than 90 % of the maximum thickness within the central60 of the bend when measured along the outer edge
42、of thebend. Bending requirements for bar wider than 4 in. shall be asagreed upon by the producer and the purchaser. For anedgewise bend, the pin or mandrel shall be 90 from theworking (extrusion or rolling) direction, and across the lesser(thckness) dimension of the bar. This is also a longitudinalb
43、end as defined and shown in Test Methods E290, Fig. 1.9.2 Test SpecimensBend test specimens shall be a fullsection of the material.9.3 Test MethodsBend tests shall be made in accordancewith Test Methods E290.10. Density10.1 The density of aluminum 1350 shall be taken as 0.097lb/in.311. Electrical Pr
44、operties11.1 LimitsThe resistivity of specimens selected shall notexceed 0.0283 mm2/m at 20C corresponding to a conduc-tivity not less than 61.0 % of the International AnnealedCopper Standard. To determine conformance with thisspecification, each value for electrical resistivity shall berounded to t
45、he nearest unit in the last right-hand place offigures, in accordance with the rounding method of PracticeE29.11.2 Number of SpecimensOne specimen shall be takenfrom a random bar representing each 3000 lb of bar, or fractionthereof, of the same temper and thickness in the inspection lot.11.3 Test Sp
46、ecimensSpecimens for determining resistivityor conductivity shall preferably be a full section of thematerial, but may be of any suitable size or shape appropriateto the instrument used in making the determination.11.4 Test MethodsElectrical resistivity or conductivityshall be determined in accordan
47、ce with Test Methods B193 orE1004, provided that, in case of dispute, the results secured byTest Method B193 shall be the basis for acceptance.12. Edge Contours12.1 Unless otherwise specified, bar shall be furnished withsquare corners. When specified, bar shall be furnished withrounded corners, roun
48、ded edges or full rounded edges, asshown in Table 19.1.11 for rolled bar and Table 19.3.4 forextruded bar or with corners and edges for sawed-plate bar asshown in Table 19.2.4, of ANSI H35.2.13. Dimensional Tolerances13.1 Bars ordered to this specification shall meet the re-quirements of ANSI H35.2.
49、 Table 4 lists the dimensionsinvolved and the applicable H35.2 table numbers.TABLE 3 Edgewise Bend RadiiSpecified Width, in. Mandrel Radius, in.0.500 and under120.5011.000 11.0011.500 1121.5012.000 22.0012.500 2122.5013.000 33.0013.500 3123.5014.000 4B236 07 (2015)314. Length14.1 When stock lengths are specified, short lengths perTable 5 may be furnished.15. General Quality15.1 The bars shall be supplied with as-sawed square ends.The edges of sawed plate bus bar shall be as sawed. Unlessotherwise specified, the bars shall be supplied
