ASTM B400-08

This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it 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 version
of the standard as published by ASTM is to be considered the official document.
Designation:B 400–94 Designation: B400 – 08
Standard Specification for
Compact Round Concentric-Lay-Stranded Aluminum 1350
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Conductors
This standard is issued under the fixed designation B400; the number immediately following the designation indicates the year of
original adoption or, in the case 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.
1. Scope
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1.1 This specification covers aluminum 1350-H19 (extra hard), 1350-H16 or -H26 ([n ]hard), 1350-H14 or -H24 ( ⁄2 hard) and
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1350-H142 or -H242 ( ⁄2 hard) bare compact-round concentric-lay-stranded conductors made from round or shaped wires for use
as uninsulated electrical conductors or in covered or insulated electrical conductors. These conductors shall be composed of a
central core surrounded by one or more roller or die compacted layers of helically applied wires (Explanatory Note 1 and Note
2).
1.2The SI values of density and resistivity are to be regarded as standard. For all other properties the inch-pound values are to
be regarded as standard and the SI units may be approximate.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in non-conformance with the standard.
NOTE 1—Prior to 1975, aluminum 1350 was designated as EC aluminum.
NOTE 2—The aluminum and temper designations conform to ANSI Standard H35.1. Aluminum 1350 corresponds to Unified Numbering System
A91350 in accordance with Practice E 527E527.
2. Referenced Documents
2.1The following documents of the issue in effect on date of material purchase form a part of this specification to the extent
referenced herein.
2.2ASTM Standards:
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2.1 ASTM Standards:
B230230/B230M Specification for Aluminum 1350-H191350H19 Wire for Electrical Purposes
B231231/B231M Specification for Concentric-Lay-Stranded Aluminum 1350 Conductors
B263 Test Method for Determination of Cross-Sectional Area of Stranded Conductors
B354 Terminology Relating to Uninsulated Metallic Electrical Conductors
B609609/B609M Specification for Aluminum 1350 Round Wire, Annealed and Intermediate Tempers, for Electrical Purposes
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E527 Practice for Numbering Metals and Alloys (UNS)
2.3 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
2.2 Other Documents:
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ANSI H35.1 ANSI H35.1/H35.1(M) Alloy and Temper Designation Systems for Aluminum
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NBS Handbook 100-Copper Wire Tables, of the National Bureau of Standards
3. Classification
3.1 For the purpose of this specification, conductors are classified as follows:
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ThisspecificationisunderthejurisdictionofASTMCommitteeB-1B01onElectricalConductorsandisthedirectresponsibilityofSubcommitteeB01.07onConductors
of Light Metals.
Current edition approved Dec. 15, 1994. Published February 1995. Originally published as B 400–63 T. Last previous edition B 400–92.
Current edition approved Sept. 1, 2008. Published October 2008. Originally approved in 1963. Last previous edition approved in 2004 as B400 – 04. DOI:
10.1520/B0400-08.
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For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
, Vol 02.03.volume information, refer to the standard’s Document Summary page on the ASTM website.
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Annual Book of ASTM Standards, Vol 14.02.
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Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
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Annual Book of ASTM Standards, Vol 01.01.
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Available from National Technical Information Service (NTIS), 5285 Port Royal Rd., Springfield, VA 22161, http://www.ntis.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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B400 – 08
3.1.1 Class AA—For bare conductors usually used in overhead lines.
3.1.2 Class A—For conductors to be covered with weather-resistant materials, and for bare conductors where greater flexibility
than is afforded by Class AA is required. Conductors indicated for further fabrication into tree wire or to be insulated and laid
helically with or around aluminum orACSR messengers, shall be regarded
...