ASTM B236/B236M-23
(Specification)Standard Specification for Aluminum Bars for Electrical Purposes (Bus Bars)
Standard Specification for Aluminum Bars for Electrical Purposes (Bus Bars)
ABSTRACT
This specification covers Aluminum 1350 bar for electric conductors in the tempers. The tempers are designated as H12, H112, and H111. The products covered by this specification shall be produced by extruding or rolling. Bars in the H12 temper shall be furnished with a rolled mill finish; bars in the H111 temper, with an as-extruded mill finish; and bars in the H112 temper, with a rolled mill finish except that the edges shall be as sawed. The bars shall be subjected to tension test to determine their tensile and yield strengths. Bars in the H12, and H111, and H112 tempers shall be capable of being bent flatwise at room temperature, through an angle of 90° around a pin or mandrel having a radius equal to the thickness of the specimen, without cracking or evidence of slivers or other imperfections. For a flatwise bend, the pin or mandrel shall be 90° from the working (extrusion or rolling) direction, and across the greater (width) dimension of the bar. The required 90° bend shall be in the working (extrusion or rolling) direction. Bars in the H12 and H111 tempers whose width-to-thickness ratios are not in excess of 12 and whose width is 100 mm or less, shall be capable of being bent at room temperature edgewise 90° around a mandrel without cracking or localized thinning to less than 90 % of the maximum thickness within the central 60° of the bend when measured along the outer edge of the bend. Electrical resistivity and conductivity shall be measured.
SCOPE
1.1 This specification covers Aluminum 1350 bar for electric conductors in the tempers shown in Table 1.
1.2 Aluminum and temper designations are in accordance with ANSI H35.1/H35.1(M). The equivalent Unified Numbering System designation is A91350 in accordance with Practice E527.
Note 1: For Alloy 6101 bus conductors, refer to Specification B317/B317M.
Note 2: Prior to 1975, Aluminum 1350 was designated as EC aluminum.
1.3 The values stated in either SI 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.
1.4 For acceptance criteria for inclusion of new aluminum and aluminum alloys in this specification, see Annex A2.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.6 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: B236/B236M − 23
Standard Specification for
1
Aluminum Bars for Electrical Purposes (Bus Bars)
This standard is issued under the fixed designation B236/B236M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
2
1. Scope* 2.2 ASTM Standards:
B193 Test Method for Resistivity of Electrical Conductor
1.1 This specification covers Aluminum 1350 bar for elec-
Materials
tric conductors in the tempers shown in Table 1.
B317/B317M Specification for Aluminum-Alloy Extruded
1.2 Aluminum and temper designations are in accordance
Bar, Rod, Tube, Pipe, Structural Profiles, and Profiles for
with ANSI H35.1/H35.1(M). The equivalent Unified Number-
Electrical Purposes (Bus Conductor)
ing System designation is A91350 in accordance with Practice
B557 Test Methods for Tension Testing Wrought and Cast
E527.
Aluminum- and Magnesium-Alloy Products
NOTE 1—For Alloy 6101 bus conductors, refer to Specification B317/
B557M Test Methods for Tension Testing Wrought and Cast
B317M.
Aluminum- and Magnesium-Alloy Products (Metric)
NOTE 2—Prior to 1975, Aluminum 1350 was designated as EC
B660 Practices for Packaging/Packing of Aluminum and
aluminum.
Magnesium Products
1.3 The values stated in either SI or inch-pound units are to
B666/B666M Practice for Identification Marking of Alumi-
be regarded separately as standard. The values stated in each
num and Magnesium Products
system may not be exact equivalents; therefore each system
B881 Terminology Relating to Aluminum- and Magnesium-
shall be used independently of the other. Combining values
Alloy Products
from the two systems may result in non-conformance with the
B985 Practice for Sampling Aluminum Ingots, Billets, Cast-
standard.
ings and Finished or Semi-Finished Wrought Aluminum
1.4 For acceptance criteria for inclusion of new aluminum
Products for Compositional Analysis
and aluminum alloys in this specification, see Annex A2.
E29 Practice for Using Significant Digits in Test Data to
1.5 This standard does not purport to address all of the
Determine Conformance with Specifications
safety concerns, if any, associated with its use. It is the
E290 Test Methods for Bend Testing of Material for Ductil-
responsibility of the user of this standard to establish appro-
ity
priate safety, health, and environmental practices and deter-
E527 Practice for Numbering Metals and Alloys in the
mine the applicability of regulatory limitations prior to use.
Unified Numbering System (UNS)
1.6 This international standard was developed in accor-
E716 Practices for Sampling and Sample Preparation of
dance with internationally recognized principles on standard-
Aluminum and Aluminum Alloys for Determination of
ization established in the Decision on Principles for the
Chemical Composition by Spark Atomic Emission Spec-
Development of International Standards, Guides and Recom-
trometry
mendations issued by the World Trade Organization Technical
E1004 Test Method for Determining Electrical Conductivity
Barriers to Trade (TBT) Committee.
Using the Electromagnetic (Eddy Current) Method
E1251 Test Method for Analysis of Aluminum and Alumi-
2. Referenced Documents
num Alloys by Spark Atomic Emission Spectrometry
2.1 The following documents of the issue in effect on date
E3061 Test Method for Analysis of Aluminum and Alumi-
of order acceptance form a part of this specification to the
num Alloys by Inductively Coupled Plasma Atomic Emis-
extent referenced herein:
sion Spectrometry (Performance Based Method)
1
This specification is under the jurisdiction of ASTM Committee B07 on Light
Metals and Alloys and is the direct responsibility of Subcommittee B07.03 on
2
Aluminum Alloy Wrought Products. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Dec. 1, 2023. Published January 2024. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1948. Last previous edition approved in 2015 as B236 – 07 (2015). Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/B0236_B0236M-23. the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
B236/B236M − 23
A,B
TABLE
...
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: B236 − 07 (Reapproved 2015) B236/B236M − 23
Standard Specification for
1
Aluminum Bars for Electrical Purposes (Bus Bars)
This standard is issued under the fixed designation B236;B236/B236M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope*
1.1 This specification covers Aluminum 1350 bar for electric conductors in the tempers shown in Table 1.
1.2 Aluminum and temper designations are in accordance with ANSI H35.1/H35.1(M). The equivalent Unified Numbering System
designation is A91350 in accordance with Practice E527.
NOTE 1—For Alloy 6101 bus conductors, refer to Specification B317/B317M.
NOTE 2—Prior to 1975, Aluminum 1350 was designated as EC aluminum.
1.3 A complete metric companion to SpecificationThe values stated in either SI or inch-pound units are to be B236 has been
developed—regarded separately as standard.B236M; therefore, no metric equivalents appear in this specification. 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.
1.4 For acceptance criteria for inclusion of new aluminum and aluminum alloys in this specification, see Annex A2.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.6 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
2.1 The following documents of the issue in effect on date of order acceptance form a part of this specification to the extent
referenced herein:
2
2.2 ASTM Standards:
B193 Test Method for Resistivity of Electrical Conductor Materials
1
This specification is under the jurisdiction of ASTM Committee B07 on Light Metals and Alloys and is the direct responsibility of Subcommittee B07.03 on Aluminum
Alloy Wrought Products.
Current edition approved Oct. 1, 2015Dec. 1, 2023. Published October 2015January 2024. Originally approved in 1948. Last previous edition approved in 20072015 as
B236 – 07.B236 – 07 (2015). DOI: 10.1520/B0236-07R15.10.1520/B0236_B0236M-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.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
B236/B236M − 23
A,B
TABLE 1 Tensile Property Limits
Tensile Yield Strength
Specified
H12 0.125–1.000 12.0 8.0
Temper Strength, (0.2 % offset),
Thickness, in.
min, ksi min, ksi
H112 0.125–0.499 11.0 6.0
0.500–1.000 10.0 4.0
1.001–3.000 9.0 3.5
H111 All 8.5 3.5
A,B
TABLE 1 Tensile Property Limits (US Customary [Metric SI])
US Customary [Metric SI]
Tensile Yield Strength Specified Thickness, mm Tensile Strength, min, Yield Strength, min
Specified
Strength, (0.2 % offset), (0.2 % Offset),
Temper
Thickness, in.
min, ksi min, ksi
Over Through MPa MPa
H12 0.125–1.000 12.0 8.0 3.20 25.00 85 55
H112 0.125–0.499 11.0 6.0 3.20 12.50 75 40
0.500–1.000 10.0 4.0 12.50 25.00 70 30
1.001–3.000 9.0 3.5 25.00 40.00 60 25
H111 All 8.5 3.5 All 60 25
A
For For purposes of determining conformance with this specification, each value for tensile strength and yield strength shall be rounded to the nearest 0.1 ksi [1 MPa]
in accordance with the rounding method of Practice E29.
B
See See Annex A1.
B317/B317M Specification for Aluminum-Alloy Extruded Bar, Rod, Tube, Pipe, Structural Profiles, and Profiles for Electrical
Purposes (Bus Conductor)
B557 Test Methods for Tension Testing Wrought and
...
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