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ASTM B 786/B786M : 2008 : R2018

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Standard Specification for 19 Wire Combination Unilay-Stranded Aluminum Conductors for Subsequent Insulation
Available format(s)

Hardcopy , PDF

Superseded date

20-10-2023

Language(s)

English

Published date

12-03-2018

CONTAINED IN VOL. 02.03, 2018 Defines bare combination unilay-strande conductors made from round wires of aluminum 1350 and 8000 series of aluminum alloys, for insulated conductors for electrical purposes.

1.1This specification covers bare combination unilay-stranded conductors made from round wires of aluminum 1350 and 8000 series of aluminum alloys, for insulated conductors for electrical purposes. Aluminum 1350 wires in tempers -H19 (extra hard), -H16 or -H26 (3/4hard), -H14 or -H24 (1/2hard), and -H142 or -H242 (1/2hard) and 8000 series aluminum alloys wires in tempers “0” and H1X or H2X are permitted. These conductors shall be constructed with a central core wire surrounded by two layers of helically laid wires, resulting in an outer diameter equal to the compressed-stranded equivalent conductors.

Note 1:For the purpose of this specification, combination unilay conductor is defined as follows: a central core wire surrounded by a layer of six helically laid wires of the same diameter as the core wire with a helically laid outer layer containing six smaller wires alternated between six wires of the same diameter as the wires in the layer underneath. Both layers have a common length and direction of lay (see Fig. 1).

FIG. 1 Cross Section of Conductor

 Cross Section of Conductor Cross Section of Conductor

1.1.1For the purpose of this specification, normal conductor classification (Class AA, A, B, C) is not applicable, as these conductors are intended for subsequent insulation. The descriptive term combination unilay-stranded shall be used in place of conductor classification (Note 2 and Note 3).

Note 2:Prior to 1975, aluminum 1350 was designated as EC aluminum.

Note 3:The aluminum and temper designations conform to ANSI Standard H35.1. Aluminum 1350 corresponds to Unified Numbering System A91350 in accordance with Practice E527. Unified Numbering System alloy designations for 8000 Series aluminum alloys in accordance with Practice E527 are listed in Table number 1 of Specification B800.

1.2The 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.

1.3This 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.

Committee
B 01
DevelopmentNote
Supersedes ASTM B 786. (10/2013)
DocumentType
Standard
Pages
6
ProductNote
Reconfirmed 2018
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy
Supersedes

ASTM B 800 : 2005 : R2021 Standard Specification for 8000 Series Aluminum Alloy Wire for Electrical Purposes—Annealed and Intermediate Tempers
ANSI H35.1/H35.1M : 2017 ALLOY AND TEMPER DESIGNATION SYSTEMS FOR ALUMINUM
ASTM E 29 : 2013 : R2019 Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
ASTM B 609/B609M : 2012 : R2016 Standard Specification for Aluminum 1350 Round Wire, Annealed and Intermediate Tempers, for Electrical Purposes
ASTM B 800 : 2005 : R2015 Standard Specification for 8000 Series Aluminum Alloy Wire for Electrical Purposes—Annealed and Intermediate Tempers
ASTM E 29 : 2002 Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
ASTM E 527 : 2023 Standard Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
ASTM E 527 : 2016 Standard Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
ASTM B 230/B230M : 2007 : R2016 Standard Specification for Aluminum 1350–H19 Wire for Electrical Purposes
ASTM E 527 : 2016 : REDLINE Standard Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
ASTM B 230/B230M : 2007 : R2021 Standard Specification for Aluminum 1350–H19 Wire for Electrical Purposes
ASTM B 193 : 2016 : REDLINE Standard Test Method for Resistivity of Electrical Conductor Materials
ASTM B 609/B609M : 2012 : R2021 Standard Specification for Aluminum 1350 Round Wire, Annealed and Intermediate Tempers, for Electrical Purposes
ASTM B 230/B230M : 2022 Standard Specification for Aluminum 1350–H19 Wire for Electrical Purposes
ASTM E 29 : 2022 Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

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