1、Designation: B231/B231M 11 B231/B231M 12Standard Specification forConcentric-Lay-Stranded Aluminum 1350 Conductors1This standard is issued under the fixed designation B231/B231M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the
2、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.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This specification covers alu
3、minum 1350-H19 (extra hard), 1350-H16 or -H26 (34 hard), 1350-H14 or -H24 (12 hard), and1350-H142 or -H242 (12 hard), bare concentric-lay-stranded conductors constructed with a straight round central wire surroundedby one or more layers of helically layed wires. The conductors are for general use fo
4、r electrical purposes (Explanatory Note 1 andNote 2).1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in eachsystem may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values
5、 from thetwo systems may result in non-conformance with the standard.1.2.1 For density, resistivity and temperature, the values stated in SI units are to be regarded as standard.NOTE 1Prior to 1975, aluminum 1350 was designated as EC aluminum.NOTE 2The aluminum and temper designations conform to ANS
6、I Standard H35.1/H35.1M. Aluminum 1350 corresponds to Unified NumberingSystem A91350 in accordance with Practice E527.NOTE 3Sealed conductors that are intended to prevent longitudinal water propagation and are further covered/insulated are also permitted within theguidelines of this specification.2.
7、 Referenced Documents2.1 The following documents of the issue in effect on date of material purchase form a part of this specification to the extentreferenced herein:2.2 ASTM Standards:2B193 Test Method for Resistivity of Electrical Conductor MaterialsB230/B230M Specification for Aluminum 1350H19 Wi
8、re for Electrical PurposesB263 Test Method for Determination of Cross-Sectional Area of Stranded ConductorsB354 Terminology Relating to Uninsulated Metallic Electrical ConductorsB609/B609M Specification for Aluminum 1350 Round Wire, Annealed and Intermediate Tempers, for Electrical PurposesB682 Spec
9、ification for Metric Sizes of Electrical ConductorsE29 Practice for Using Significant Digits in Test Data to Determine Conformance with SpecificationsE527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)2.3 ANSI Documents:3ANSI H35.1 American National Standard Alloy and
10、 Temper Designation System for AluminumANSI H35.1M American National Standard Alloy and Temper Designation Systems for Aluminum Metric2.4 NIST Document:4NBS Handbook 100Copper Wire Tables2.5 Aluminum Association Document:5Publication 50, Code Words for Overhead Aluminum Electrical Conductors1 This s
11、pecification is under the jurisdiction of ASTM Committee B01 on Electrical Conductors and is the direct responsibility of Subcommittee B01.07 on Conductorsof Light Metals.Current edition approved April 1, 2011June 1, 2012. Published May 2011October 2012. Originally approved in 1948. Last previous ed
12、ition approved in 20042011 asB231/B231M 04.B231/B231M 11. DOI: 10.1520/B0231_B0231M-11.10.1520/B0231_B0231M-12.2 For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the
13、 standards Document Summary page on the ASTM website.3 Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036.4 Available from National Technical Information Service (NTIS), U.S. Department of Commerce, 5285 Port Royal Rd., Springfield, VA 22161.5
14、Available from the Aluminum Association, Inc., 900 19th Street, NW, Suite 300, Washington, DC 20006.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technicall
15、y 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 document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C7
16、00, West Conshohocken, PA 19428-2959. United States13. Classification3.1 For the purpose of this specification, conductors are classified as follows (Explanatory Note 1 and Note 2):3.1.1 Class AAFor bare conductors usually used in overhead lines.3.1.2 Class AFor conductors to be covered with weather
17、-resistant materials, and for bare conductors where greater flexibilitythan is afforded by Class AA is required. Conductors intended for further fabrication into tree wire or to be insulated and laidhelically with or around aluminum or ACSR messengers, shall be regarded as Class A conductors with re
18、spect to direction of layonly (see 7.4).3.1.3 Class BFor conductors to be insulated with various materials such as rubber, paper, varnished cloth, and so forth, andfor the conductors indicated under Class A where greater flexibility is required.3.1.4 Classes C and DFor conductors where greater flexi
19、bility is required than is provided by Class B conductors.4. Ordering Information4.1 Orders for material under this specification shall include the following information:4.1.1 Quantity,4.1.2 Conductor size: square millimetres, if cross-sectional area is specified as a requirement (Section 8 and Tabl
20、es 1-4),4.1.2.1 Conductor size, number, and diameter of wires for Class B, C, or D conductors, if cross-sectional area is not specifiedas a requirement (see 8.2),4.1.3 Class (see 3.1),4.1.4 Temper (see 5.1),4.1.5 Details of special-purpose lays, when required (see 7.2 through 7.5),4.1.6 Special tens
21、ion tests if required (see 14.1 and 15.1),4.1.7 Package size and type (see 17.1 and Table 1 or Table 2),4.1.8 Special package marking, if required (Section 19),4.1.9 Heavy wood lagging, if required (see 18.2),4.1.10 Place of inspection (Section 17), and4.1.11 Method of cross-sectional area determina
22、tion if not optional (see 12.1).5. Requirements for Wires5.1 Aluminum wire employed in Classes AA and A conductors shall be 1350-H19, unless otherwise specified. The purchasershall designate the temper of conductors of Classes B, C, and D.5.1.1 For conductor tempers other than 1350-H19, when temper
23、designations are not more specific in the inquiry and purchaseorder, the manufacturer shall have the following options on manufacturing method:5.1.1.1 Strand the conductor from wires drawn to final temper;5.1.1.2 Strand the conductor from wires drawn to H19 temper and annealed to final temper prior
24、to stranding;5.1.1.3 Strand the conductor from 1350-H19 wires and anneal the stranded conductor to final temper.5.2 Before stranding, the aluminum wire used shall meet the requirements of Specifications B230/B230M or B609/B609M,whichever is applicable.5.3 All wires in the conductor shall be of the s
25、ame temper.6. Joints6.1 Only cold-pressure joints or electric-butt, cold-upset joints may be made in the six outer finished wires of (1) Class AAconductors composed of seven wires or (2) Class A conductors composed of seven wires used in overhead lines. In otherconductors, electric-butt welds, cold-
26、pressure welds, or electric-butt, cold-upset welds may be made in the finished wirescomposing conductors, but such welds shall not be closer than prescribed in Table 5 (Explanatory Note 3).7. Lay7.1 For Class AA conductors composed of seven wires or more, the preferred lay of a layer of wires is 13.
27、5 times the outsidediameter of that layer, but the lay shall be not less than 10 nor more than 16 times this diameter.7.2 For all other classes the lay of a layer of wires shall be not less than 8 nor more than 16 times the outside diameter of thatlayer, except that for conductors composed of 37 wir
28、es or more, this requirement shall apply only to the two outer layers. The layof the layers other than the two outer layers shall be at the option of the manufacturer, unless otherwise agreed upon.7.2.1 For conductors to be used in covered or insulated wires or cables, the lay length of the wires sh
29、all not be less than 8 normore than 16 times the outer diameter of the finished conductor. For conductors of 37 wires or more, this requirement shall applyto the wires in the outer two layers. The lay of the layers other than the outer two layers shall be at the option of the manufacturer,unless oth
30、erwise agreed upon.7.3 Other lays for special purposes shall be furnished by special agreement between the manufacturer and the purchaser(Explanatory Note 4).B231/B231M 122TABLE 1 Construction Requirements and Recommended Reel Sizes and Shipping Lengths of Aluminum Conductors, Concentric-Lay-Strande
31、d, Class AA, and Class ANOTE 1Metric values listed represent a soft conversion and as such they may not be the same as those masses which are calculated from the basicmetric density.Conductor Size Required Construction Mass Rated Strength Recommended Package SizesAcmilsBorAWGmm2 CodeWordsC ClassNumb
32、erofWiresDiameter of Wire Per1000 ft,lbPer km,kg kips kNReelDesignationDNominalLengthof EachPiece,ftBNominalMassof EachLength,lbBin. mm3 500 000 1773 Bluebonnet A 127 0.1660 4.22 3345 4977 58.7 261 RMT 90.45 2840 95303 000 000 1520 Trillium A 127 0.1537 3.90 2840 4226 50.3 223 RMT 90.45 3350 95302 7
33、50 000 1393 Bitterroot A 91 0.1738 4.42 2602 3872 46.1 205 RMT 90.45 3490 91002 500 000 1267 Lupine A 91 0.1657 4.21 2365 3519 41.9 186 RMT 90.45 3840 91002 250 000 1140 Sagebrush A 91 0.1572 3.99 2128 3166 37.7 167 RMT 90.45 4270 91002 000 000 1013 Cowslip A 91 0.1482 3.77 1873 2787 34.2 153 RMT 90
34、.45 4850 91001 750 000 886.7 Jessamine AA 61 0.1694 4.30 1641 2442 29.7 132 RMT 90.45 5940 97601 590 000 805.7 Coreopsis AA 61 0.1614 4.10 1489 2216 27.0 120 RMT 90.45RM 68.3865403270976048801 510 500 765.4 Gladiolus AA, A 61 0.1574 4.00 1417 2108 25.6 114 RMT 90.45RM 68.3868803440976048801 431 000
35、725.1 Carnation AA, A 61 0.1532 3.89 1342 1997 24.3 108 RMT 90.45RM 68.3872703635976048801 351 000 694.8 Columbine AA, A 61 0.1488 3.78 1266 1884 23.4 104 RMT 90.45RM 68.3876903845976048801 351 000 684.6 Columbine AA, A 61 0.1488 3.78 1266 1884 23.4 104 RMT 90.45RM 68.3876903845976048801 272 000 644
36、.5 Narcissus AA, A 61 0.1444 3.67 1192 1774 22.0 98.1 RMT 90.45RM 68.3881704085976048801 192 500 604.2 Hawthorn AA, A 61 0.1398 3.55 1117 1662 21.1 93.5 RMT 90.45RM 68.3893404360976048801 113 000 564.0 Marigold AA, A 61 0.1351 3.43 1044 1553 19.7 87.3 RMT 90.45RM 68.3893404670976048801 033 500 523.7
37、 Bluebell AA 37 0.1671 4.25 968.4 1441 17.7 78.8 RMT 84.45RM 66.32NR 48.287630381519107400370018501 033 500 523.7 Larkspur A 61 0.1302 3.31 969.2 1442 18.3 81.3 RMT 90.45RM 68.3810 0605030976048801 000 000 506.7 Hawkweed AA 37 0.1644 4.18 937.3 1395 17.2 76.2 RMT 84.45RM 66.32NR 48.28788039401970740
38、0370018501 000 000 506.7 Camellia A 61 0.1280 3.25 936.8 1394 17.7 78.3 RMT 90.45RM 68.3810 400520097604880954 000 483.4 Magnolia AA 37 0.1606 4.08 894.5 1331 16.4 72.6 RMT 84.45RM 66.32NR 48.28826041302065740037001850954 000 483.4 Goldenrod A 61 0.1251 3.18 894.8 1331 16.9 75.0 RMT 90.45RM 68.3810
39、900545097604880900 000 456.0 Cockscomb AA 37 0.1560 3.96 844.0 1256 16.4 68.4 RMT 84.45RM 66.32NR 48.28876043902190740037001850900 000 456.0 Snapdragon A 61 0.1215 3.09 844.0 1256 15.9 70.8 RMT 90.45RM 68.3811 550577597604880795 00 402.8 Arbutus AA 37 0.1466 3.72 745.3 1109 13.9 61.8 RMT 84.45RM 66.
40、32NR 48.28992049602480740037001850795 000 402.8 Lilac A 61 0.1142 2.90 745.7 1110 14.3 63.8 RMT 90.45RM 68.3813 080654097604880750 000 380.0 Petunia AA 37 0.1424 3.62 703.2 1046 13.1 58.6 RMT 84.45RM 66.32NR 48.2810 51052552630740037001850750 000 380.0 Cattail A 61 0.1109 2.82 703.2 1046 13.5 60.3 R
41、MT 90.45RM 68.3813 860693097604880715 500 362.6 Violet AA 37 0.1391 3.53 671 998.5 12.8 56.7 RTM 84.45RM 66.32NR 48.2811 02055102755740037001850715 500 362.6 Nasturtium A 61 0.1083 2.75 671 998.5 13.1 58.4 RMT 90.45RM 68.3814 530726597604880700 000 354.7 Verbena AA 37 0.1375 3.49 655.7 975.7 12.5 55
42、.4 RMT 84.45RM 66.32NR 48.2811 26056302815740037001850700 000 354.7 Flag A 61 0.1071 2.72 655.8 975.8 12.9 57.1 RMT 90.45RM 68.3814 850742597604880650 000 329.4 Heuchera AA 37 0.1326 3.37 609.8 907.4 11.6 51.7 RMT 84.45RM 66.32NR 48.2812 13060653035740037001850B231/B231M 123TABLE 1 ContinuedConducto
43、r Size Required Construction Mass Rated Strength Recommended Package SizesAcmilsBorAWGmm2 CodeWordsC ClassNumberofWiresDiameter of Wire Per1000 ft,lbPer km,kg kips kNReelDesignationDNominalLengthof EachPiece,ftBNominalMassof EachLength,lbBin. mm636 000 322.3 Orchid AA, A 37 0.1311 3.33 596.0 886.9 1
44、1.4 50.4 RMT 84.45RM 66.32NR 48.2812 40062003100740037001850600 000 304.0 Meadowsweet AA, A 37 0.1273 3.23 562.0 836.3 10.7 47.5 RMT 84.45RM 66.32NR 48.2813 14065703285740037001850556 500 282.0 Dahlia AA 19 0.1711 4.35 521.4 775.8 9.75 43.3 RM 66.32NR 48.28NR 42.28727036352425380019001265556 500 282
45、.0 Mistletoe A 37 0.1226 3.12 521.3 775.7 9.94 44.3 RMT 84.45RM 66.32NR 48.2814 17070853545740037001850500 000 253.3 Zinnia AA 19 0.1622 4.12 468.5 697.1 8.76 38.9 RM 66.32NR 48.28NR 42.28810040502700380019001265500 000 253.3 Hyacinth A 37 0.1162 2.95 468.3 696.8 9.11 40.5 RMT 84.45RM 66.32NR 48.281
46、5 76078803940740037001850477 000 241.7 Cosmos AA 19 0.1584 4.02 446.8 664.8 8.36 37.0 RM 66.32NR 48.28NR 42.28849042452830380019001265477 000 241.7 Syringa A 37 0.1135 2.88 446.8 664.8 8.69 38.6 RMT 84.45RM 66.32NR 48.2816 53082654135740037001850450 000 228.0 Goldentuft AA 19 0.1539 3.91 421.8 627.6
47、 7.89 35.0 RM 66.32NR 48.28NR 42.28900045003000380019001265397 500 201.4 Canna AA, A 19 0.1447 3.67 372.9 554.9 7.11 31.6 RM 66.32NR 48.28NR 42.2810 18050903395380019001265350 000 177.3 Daffodil A 19 0.1357 3.45 327.9 487.9 6.39 28.4 RM 66.32NR 48.28NR 42.2811 56057803855380019001265336 400 170.5 Tu
48、lip A 19 0.1331 3.38 315.5 469.5 6.15 27.3 RM 66.32NR 48.28NR 42.2812 03060154010380019001265300 000 152.0 Peony A 19 0.1257 3.19 281.4 418.3 5.48 24.3 RM 66.32NR 48.28NR 42.2813 49067454495380019001265266 800 135.2 Daisy AA 7 0.1953 4.96 250.2 372.3 4.83 21.4 NR 42.28NR 36.22559027951400700266 800
49、135.2 Laurel A 19 0.1185 3.01 250.1 372.2 4.97 22.1 RM 66.32NR 48.28NR 42.2815 17075855055380019001265250 000 126.7 Sneezewort AA 7 0.1890 4.80 234.4 348.8 4.52 20.1 NR 42.28NR 36.22597029851400700250 000 126.7 Valerian A 19 0.1147 2.91 234.3 348.6 4.66 20.7 RM 66.32NR 48.28NR 42.2816 190809553953800190012654/0 107.2 Oxlip AA, A 7 0.1739 4.42 198.4 295.2 3.83 17.0 NR 42.28NR 36.227050352514007003/0 85.0 Phlox AA, A 7 0.1548 3.93 157.2 233.9 3.04 13.5 NR 42.28NR 36.228890444514007002/0 67.4 Aster AA, A 7 0.1379 3.50 124.8 185.7 2.51 11.1 NR 42.28NR 36.2211 210560
