ASTM B400/B400M-23
(Specification)Standard Specification for Compact Round Concentric-Lay-Stranded Aluminum 1350 Conductors
Standard Specification for Compact Round Concentric-Lay-Stranded Aluminum 1350 Conductors
ABSTRACT
This specification covers aluminum1350-H19, 1350-H16 or -H26, 1350-H14 or -H24, and 1350-H142 or -H242 bare compact-round concentric-lay-stranded conductors made from round or shaped wires for use as uninsulated electric conductors or in covered or insulated electrical conductors. Joint shall be cold-pressure welded or electric-butt, cold-upset welded. The conductors shall conform to the required construction values of number of wires, nominal compact conductor diameter, nominal cross-sectional area and nominal DC resistance. Tests for the mechanical and electrical properties of wire composing the conductor shall be made before stranding and the conductors shall conform to the required values of breaking strength and rated strength.
SCOPE
1.1 This specification covers aluminum 1350-H19 (extra hard), 1350-H16 or -H26 (3/4 hard), 1350-H14 or -H24 (1/2 hard) and 1350-H142 or -H242 (1/2 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).
1.2 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 E527.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: B400/B400M − 23
Standard Specification for
Compact Round Concentric-Lay-Stranded Aluminum 1350
1
Conductors
This standard is issued under the fixed designation B400/B400M; 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 B231/B231M Specification for Concentric-Lay-Stranded
Aluminum 1350 Conductors
1.1 This specification covers aluminum 1350-H19 (extra
B263 Test Method for Determination of Cross-Sectional
3 1
hard), 1350-H16 or -H26 ( ⁄4 hard), 1350-H14 or -H24 ( ⁄2
Area of Stranded Conductors
1
hard) and 1350-H142 or -H242 ( ⁄2 hard) bare compact-round
B354 Terminology Relating to Uninsulated Metallic Electri-
concentric-lay-stranded conductors made from round or shaped
cal Conductors
wires for use as uninsulated electrical conductors or in covered
B609/B609M Specification for Aluminum 1350 Round
or insulated electrical conductors. These conductors shall be
Wire, Annealed and Intermediate Tempers, for Electrical
composed of a central core surrounded by one or more roller or
Purposes
die compacted layers of helically applied wires (Explanatory
E29 Practice for Using Significant Digits in Test Data to
Note 1 and Note 2).
Determine Conformance with Specifications
1.2 The values stated in either SI units or inch-pound units
E527 Practice for Numbering Metals and Alloys in the
are to be regarded separately as standard. The values stated in
Unified Numbering System (UNS)
each system may not be exact equivalents; therefore, each
2.2 Other Documents:
system shall be used independently of the other. Combining
ANSI H35.1/H35.1(M) Alloy and Temper Designation Sys-
3
values from the two systems may result in non-conformance
tems for Aluminum
with the standard.
NBS Handbook 100-Copper Wire Tables, of the National
4
Bureau of Standards
NOTE 1—Prior to 1975, aluminum 1350 was designated as EC
aluminum.
3. Classification
NOTE 2—The aluminum and temper designations conform to ANSI
Standard H35.1. Aluminum 1350 corresponds to Unified Numbering
3.1 For the purpose of this specification, conductors are
System A91350 in accordance with Practice E527.
classified as follows:
1.3 This international standard was developed in accor-
3.1.1 Class AA—For bare conductors usually used in over-
dance with internationally recognized principles on standard-
head lines.
ization established in the Decision on Principles for the
3.1.2 Class A—For conductors to be covered with weather-
Development of International Standards, Guides and Recom-
resistant materials, and for bare conductors where greater
mendations issued by the World Trade Organization Technical
flexibility than is afforded by Class AA is required. Conductors
Barriers to Trade (TBT) Committee.
indicated for further fabrication into tree wire or to be insulated
and laid helically with or around aluminum or ACSR
2. Referenced Documents
messengers, shall be regarded as Class A conductors with
2
respect to direction of lay only (see 6.4).
2.1 ASTM Standards:
3.1.3 Class B—For conductors to be insulated with various
B230/B230M Specification for Aluminum 1350–H19 Wire
materials such as rubber, paper, varnished cloth, and so forth,
for Electrical Purposes
and for the conductors indicated under Class A where greater
flexibility is required.
1
This specification is under the jurisdiction of ASTM Committee B01 on
4. Ordering Information
Electrical Conductors and is the direct responsibility of Subcommittee B01.07 on
Conductors of Light Metals.
4.1 Orders for material under this specification shall include
Current edition approved Oct. 1, 2023. Published October 2023. Originally
the following information:
approved in 1963. Last previous edition approved in 2019 as B400/B400M – 19.
DOI: 10.1520/B0400_B0400M-23.
2 3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM 4th Floor, New York, NY 10036, http://www.ansi.org.
4
Standards volume information, refer to the standard’s Document Summary page on Available from National Technical Information Service (NTIS), 5285 Port
the ASTM website. 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
1
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B400/B400M − 23
4.1.1 Quantity of each size an
...
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. 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: B400/B400M − 19 B400/B400M − 23
Standard Specification for
Compact Round Concentric-Lay-Stranded Aluminum 1350
1
Conductors
This standard is issued under the fixed designation B400/B400M; 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
3 1
1.1 This specification covers aluminum 1350-H19 (extra hard), 1350-H16 or -H26 ([n( ⁄4 ]hard), hard), 1350-H14 or -H24 ( ⁄2
1
hard) and 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).
1.2 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 E527.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
B230/B230M Specification for Aluminum 1350–H19 Wire for Electrical Purposes
B231/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
B609/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 in the Unified Numbering System (UNS)
1
This specification is under the jurisdiction of ASTM Committee B01 on Electrical Conductors and is the direct responsibility of Subcommittee B01.07 on Conductors
of Light Metals.
Current edition approved March 1, 2019Oct. 1, 2023. Published March 2019October 2023. Originally approved in 1963. Last previous edition approved in 20142019 as
B400/B400M – 14.B400/B400M – 19. DOI: 10.1520/B0400_B0400M-19.10.1520/B0400_B0400M-23.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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B400/B400M − 23
2.2 Other Documents:
3
ANSI H35.1/H35.1(M) Alloy and Temper Designation Systems for Aluminum
4
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:
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 or ACSR messengers, shall be regarded as Class A conductors with respect to direction of lay
only (see 6.36.4).
3.1.3 Class B—For conductors to be insulated with various materials such as rubber, paper, varnished cloth, and so forth, and for
the conductors indicated under Class A where greater flexibility is required.
4. Ordering Information
4.1 Orders for material under this specification shall include the following information:
4.1.1 Quantity of each size and class (Table 1),
4.1.2 Conductor size; circular-mil
...
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