ASTM B236-00
(Specification)Standard Specification for Aluminum Bars for Electrical Purposes (Bus Bars)
Standard Specification for Aluminum Bars for Electrical Purposes (Bus Bars)
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. The equivalent Unified Numbering System designation is A91350 in accordance with Practice E527. Note 1-For Alloy 6101 bus conductors, refer to Specification B317. Note 2-Prior to 1975, Aluminum 1350 was designated as EC aluminum.
1.3 A complete metric companion to Specification B236 has been developed-B236M; therefore, no metric equivalents appear in this specification.
1.4 For acceptance criteria for inclusion of new aluminum and aluminum alloys in this specification, see Annex A2.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: B 236 – 00
Standard Specification for
Aluminum Bars for Electrical Purposes (Bus Bars)
This standard is issued under the fixed designation B 236; 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 (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
A,B
TABLE 1 Tensile Property Limits
1. Scope*
Tensile Yield Strength
1.1 This specification covers Aluminum 1350 bar for elec-
Specified
Temper Strength, (0.2 % offset),
Thickness, in.
tric conductors in the tempers shown in Table 1.
min, ksi min, ksi
1.2 Aluminum and temper designations are in accordance
H12 0.125–1.000 12.0 8.0
with ANSI H35.1. The equivalent Unified Numbering System
H112 0.125–0.499 11.0 6.0
0.500–1.000 10.0 4.0
designation is A91350 in accordance with Practice E 527.
1.001–3.000 9.0 3.5
H111 All 8.5 3.5
NOTE 1—For Alloy 6101 bus conductors, refer to Specification B 317.
A
NOTE 2—Prior to 1975, Aluminum 1350 was designated as EC alumi-
Forpurposesofdeterminingconformancewiththisspecification,eachvaluefor
num. tensile strength and yield strength shall be rounded to the nearest 0.1 ksi in
accordance with the rounding method of Practice E 29.
B
1.3 A complete metric companion to Specification B 236
See Annex A1.
hasbeendeveloped—B 236M;therefore,nometricequivalents
appear in this specification.
Analysis of Aluminum and Aluminum Alloys by the
1.4 For acceptance criteria for inclusion of new aluminum
Point-to-Plane Technique
and aluminum alloys in this specification, see Annex A2.
E 290 TestMethodforSemi-GuidedBendTestforDuctility
2. Referenced Documents
of Metallic Materials
E 527 Practice for Numbering Metals and Alloys (UNS)
2.1 The following documents of the issue in effect on date
E 607 Test Method for Optical Emission Spectrometric
of order acceptance form a part of this specification to the
Analysis of Aluminum and Aluminum Alloys by the
extent referenced herein:
Point-to-Plane Technique, Nitrogen Atmosphere
2.1 ASTM Standards:
E 716 Practices for Sampling Aluminum and Aluminum
B 193 Test Method for Resistivity of Electrical Conductor
Alloys for Spectrochemical Analysis
Materials
E 1004 Test Method for Electromagnetic (Eddy-Current)
B 557 Test Methods of Tension Testing Wrought and Cast
Measurements of Electrical Conductivity
Aluminum- and Magnesium-Alloy Products
E 1251 Test Method for Optical Emission Spectrometric
B 660 Practices for Packaging/Packing of Aluminum and
Analysis ofAluminum andAluminumAlloys by theArgon
Magnesium Products
Atmosphere, Point-to-Plane, Unipolar Self-Initiating Ca-
E 29 Practice for Using Significant Digits in Test Data to
pacitor Discharge
Determine Conformance with Specifications
2.2 ANSI Standards:
E 34 Test Methods for ChemicalAnalysis ofAluminum and
H35.1 Alloy and Temper Designation Systems for Alumi-
Aluminum-Base Alloys
num
E 55 PracticeforSamplingWroughtNonferrousMetalsand
H35.2 Dimensional Tolerances for Aluminum Mill Prod-
Alloys for Determination of Chemical Composition
ucts
E 227 Test Method for Optical Emission Spectrometric
2.1.3 Military Standard:
MIL-STD-129 Marking for Shipment and Storage
2.1.4 Federal Standard:
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
Wrought Aluminum Alloy Products.
Current edition approved May 10, 2000. Published August 2000. Originally Annual Book of ASTM Standards, Vol 03.01.
published as B 236–48T. Last previous edition B 236–95. Annual Book of ASTM Standards, Vol 01.01.
2 8
Annual Book of ASTM Standards, Vol 02.03. Annual Book of ASTM Standards, Vol 03.06.
3 9
Annual Book of ASTM Standards, Vol 02.02. Annual Book of ASTM Standards, Vol 03.03.
4 10
Annual Book of ASTM Standards, Vol 14.02. Available from Standardization Documents Order Desk, Bldg. 4 Section D,
Annual Book of ASTM Standards, Vol 03.05. 700 Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
*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.
B236–00
Fed. Std. No. 123 Marking for Shipment (Civil Agencies) 6. Responsibility for Quality Assurance
6.1 Responsibility for Inspection and Tests—Unless other-
3. Terminology
wise specified in the contract or purchase order, the producer is
responsible for the performance of all inspection and test
3.1 Definitions:
requirements specified herein. Except as otherwise specified in
3.1.1 bus conductor—a rigid electric conductor of any cross
the contract or order, the producer may use his own or any
section.
other suitable facilities for the performance of the inspection
3.1.2 bar—a solid product that is long in relation to cross
and test requirements specified herein, unless disapproved by
section, which is square or rectangular (excluding plate and
the purchaser. The purchaser shall have the right to perform
flattened wire) with sharp or rounded corners or edges, or is a
any of the inspections and tests set forth in this specification
regular hexagon or octagon, and in which at least one perpen-
where such inspections are deemed necessary to assure that
dicular distance between parallel faces is 0.375 in. or greater.
material conforms to prescribed requirements.
3.1.3 extruded bar—bar brought to final dimensions by
6.2 Lot Definition—An inspection lot shall consist of an
extruding.
identifiable quantity of material of the same aluminum desig-
3.1.4 rolled bar—bar brought to final dimensions by hot
nation, temper, and thickness subjected to inspection at one
rolling.
time.
3.1.5 sawed-plate bar—barbroughttofinalthicknessbyhot
or cold rolling and to final width by sawing (sawed edges).
7. Chemical Composition Requirements
3.2 Definitions of Terms Specific to This Standard:
7.1 The material shall conform to the composition in Table
3.2.1 capable of—the term capable of as used in this
2. Conformance shall be determined by the producer by
specification means that the test need not be performed by the
analyzing samples taken at the time the ingots or continuously
producer of the material. However, should testing by the
cast bars are poured, or samples taken from the finished or
purchaser establish that the material does not meet these
semifinished product. If the producer has determined the
requirements, the material shall be subject to rejection.
composition of the material during the course of manufacture,
he shall not be required to sample and analyze the finished
4. Ordering Information
product.
4.1 Orders for material to this specification shall include the
NOTE 3—It is standard practice in the United States aluminum industry
following information:
to determine conformance to the composition limits prior to further
4.1.1 This specification designation (which includes the
processing of ingots into wrought products. Due to the continuous nature
number, the year, and the revision letter, if applicable),
of the process, it is not practical to keep a specific ingot analysis identified
4.1.2 Quantity in pieces or pounds, with a specific quantity of finished material.
4.1.3 Temper (8.1),
7.2 Number of Samples—The number of samples taken for
4.1.4 Edge contour (Section 12),
determination of chemical composition shall be as follows:
4.1.5 Diameter for rounds; distance across flats for square-
7.2.1 When samples are taken at the time the ingots are
cornered squares, hexagons, or octagons; width and depth for
poured, at least one sample shall be taken for each group of
square-cornered rectangles,
ingots poured simultaneously from the same source of molten
4.1.6 Length (specific or stock) (Section 14),
metal.
4.2 Additionally, orders for material to this specification
A
TABLE 2 Chemical Composition Limits
shall include the following information when required by the
purchaser: Element Composition, %
4.2.1 Whether inspection or witness of inspection and tests
Silicon, max 0.10
Iron, max 0.40
by the purchaser’s representative is required prior to material
Copper, max 0.05
shipment (16.1),
Manganese, max 0.01
4.2.2 Whether marking for identification is required (18.1), Chromium, max 0.01
Zinc, max 0.05
4.2.3 Whether Practices B 660 applies and, if so, the levels
Boron, max 0.05
of preservation, packaging, and packing required (19.3), and
Gallium, max 0.03
Vanadium + titanium, total, max 0.02
4.2.4 Whethercertificationofthematerialbytheproduceris
B
Other elements, each, max 0.03
required (Section 20).
B,C
Other elements, total, max 0.10
D
Aluminum, min 99.50
5. Manufacture A
Analysisshallbemadefortheelementsforwhichlimitsareshowninthistable.
B
Others includes all unlisted metallic elements. The producer may analyze
5.1 The products covered by this specification shall be
samples for trace elements not specified in the specification. However, such
produced by extruding or rolling, at the option of the producer,
analysis is not required and may not cover all metallic Others elements. Should
any analysis by the producer or the purchaser establish that an Others element
provided that the production method results in material that
exceeds the limit of Each or that the aggregate of several Others elements
meets all requirements of this specification.
exceeds the limit of Total, the material shall be considered non-conforming.
C
5.2 Bars in the H12 temper shall be furnished with a rolled Other Elements—Total shall be the sum of unspecified metallic elements
0.010 % or more, rounded to the second decimal before determining the sum.
mill finish; bars in the H111 temper, with an as-extruded mill
D
The aluminum content shall be calculated by subtracting from 100.00 % the
finish; and bars in the H112 temper, with a rolled mill finish
sumofallmetallicelementspresentinamountsof0.010 %ormoreeach,rounded
except that the edges shall be as sawed. to the second decimal before determining the sum.
B236–00
7.2.2 When samples are taken from the finished or semifin- 60° of the bend when measured along the outer edge of the
ished product, a sample shall be taken to represent each 4000 bend. Bending requirements for bar wider than 4 in. shall be as
lb, or fraction thereof, in the shipment, except that not more agreed upon by the producer and the purchaser.
than one sample shall be required per piece. 9.2 Test Specimens—Bend test specimens shall be a full
7.3 Methods of Sampling—Samples for determination of section of the material.
chemical composition shall be taken in accordance with one of 9.3 Test Methods—Bend tests shall be made in accordance
the following methods: with Test Method E 290.
7.3.1 Samples for chemical analysis shall be taken from the
material by drilling, sawing, milling, turning, or clipping a
10. Density
representative piece or pieces to obtain a prepared sample of
10.1 The density of aluminum 1350 shall be taken as
not less than 75 g. Sampling shall be in accordance with
0.097% lb/in.
Practice E 55.
7.3.2 Sampling for spectrochemical analysis shall be in
11. Electrical Properties
accordancewithPracticesE 716.Samplesforothermethodsof
11.1 Limits—The resistivity of specimens selected shall not
analysis shall be taken by methods suitable for the form of
exceed 15.6 V·lb /ft at 20°C corresponding to a conductivity
material being analyzed and the type of analytical method
not less than 61.0 % of the International Annealed Copper
used.
Standard. To determine conformance with this specification,
7.4 Methods of Analysis—The determination of chemical
each value for electrical resistivity shall be rounded to the
composition shall be made in accordance with suitable chemi-
nearest unit in the last right-hand place of figures, in accor-
cal (Test Methods E 34), or spectrochemical (Test Methods
dance with the rounding method of Practice E 29.
E 227, E 607, and E 1251), methods. Other methods may be
11.2 Number of Specimens—One specimen shall be taken
used only when no published ASTM method is available. In
from a random bar representing each 3000 lb of bar, or fraction
case of dispute, the methods of analysis shall be agreed upon
thereof, of the same temper and thickness in the inspection lot.
between the producer and purchaser.
11.3 Test Specimens—Specimens for determining resistivity
or conductivity shall preferably be a full section of the
8. Tensile Properties
material, but may be of any suitable size or shape appropriate
8.1 Limits—The bars shall conform to the requirements for
to the instrument used in making the determination.
tensile properties as specified in Table 1.
11.4 Test Methods—Electrical resistivity or conductivity
8.2 Number of Specimens—One tension test specimen shall
shall be determined in accordance with Test Methods B 193 or
be taken from a random bar representing each 3000 lb of bar,
E 1004, provided that, in case of dispute, the results secured by
or fraction thereof, of the same temper, thickness, and width in
Test Method B 193 shall be the basis for acceptance.
the shipment.
8.3 Test Methods—The tension test shall be made in accor-
12. Edge Contours
dance with Test Methods B 557.
12.1 Unless otherwise specified, bar shall be furnished with
9. Bend Properties square corners. When specified, bar shall be furnished with
rounded corners, rounded edges or full rounded edges, as
9.1 Limits:
shown in Table 19.1.11 for rolled bar and Table 19.3.4 for
9.1.1 Flatwise Bend—Bars in the H12, and H111, and H112
extruded bar or with corners and edges for sawed-plate bar as
tempers shall be capable of being bent flatwise at room
shown in Table 19.2.4, of ANSI H35.2.
temperature, through an angle of 90° around a pin or mandrel
having a radius equal to the thickness of the specimen, without
13. Dimensional Tolerances
cracking or evidence of slivers or other imperfections.
9.1.2 Edgewise Bend—Bars in the H12 and H111 tempers
13.1 Bars ordered to this specification shall meet the re-
whose width-to-thickness ratios are not in excess of 12 and quirements of ANSI H35.2. Table 4 lists the dimensions
whose width is 4 in. or less, shall be capable of being bent at
involved and the applicable H35.2 table numbers.
room temperature edgewise 90° around a mandrel having the
radius shown in Table 3 without cracking or localized thinning
14. Length
to less than 90 % of the maximum thickness within the central
14.1 When stock lengths are specified, short lengths per
Table 5 may be furnished.
TABLE 3 Edgewise Bend Radii
15. General Quality
Specified Width, in. Mandrel Radius, in.
0.500 and under ⁄2 15.1 The bars shal
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.