ASTM B236M-00(2006)

Standard Specification for Aluminum Bars for Electrical Purposes (Bus Bars) [Metric]

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 H35.1M. The equivalent Unified Numbering System designation is A91350 in accordance with Practice E 527. For Alloy 6101 bus conductors, refer to Specification B 317.Note 1
Prior to 1975, Aluminum 1350 was designated as EC aluminum.
1.3 This specification is the metric counterpart of Specification B 236.
1.4 For acceptance criteria for inclusion of new aluminum and aluminum alloys in this specification, see Annex A1.

General Information

• Status: Historical
• Publication Date: 30-Apr-2006
• ICS: 29.060.10 - Wires
• ICS: 77.150.10 - Aluminium products
• Technical Committee: B07 - Light Metals and Alloys
• Drafting Committee: B07.03 - Aluminum Alloy Wrought Products

Relations

• Replaced By: ASTM B236M-07 - Standard Specification for Aluminum Bars for Electrical Purposes (Bus Bars) [Metric]
• Effective Date: 01-Jun-2007

Standards Content (Sample)

Designation: B 236M – 00 (Reapproved 2006)
METRIC
Standard Specification for
Aluminum Bars for Electrical Purposes (Bus Bars) [Metric]
This standard is issued under the fixed designation B 236M; 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
Specified Thickness, mm Tensile Yield Strength,
1.1 This specification covers Aluminum 1350 bar for elec-
Temper Strength, min, (0.2 % offset)
tric conductors in the tempers shown in Table 1.
Over Through
min, MPa MPa
1.2 Aluminum and temper designations are in accordance
H12 3.20 25.00 85 55
with ANSI H35.1M. The equivalent Unified Numbering Sys-
H112 3.20 12.50 75 40
12.50 25.00 70 30
tem designation is A91350 in accordance with Practice E 527.
25.00 40.00 60 25
H111 All 60 25
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 1 MPa in
accordance with the rounding-off method of PracticeE29.
B
1.3 This specification is the metric counterpart of Specifi-
See Appendix X2.
cation B 236.
1.4 For acceptance criteria for inclusion of new aluminum
Aluminum-Base Alloys
and aluminum alloys in this specification, see Annex A1.
E55 PracticeforSamplingWroughtNonferrousMetalsand
2. Referenced Documents
Alloys for Determination of Chemical Composition
E 227 Test Method for Optical Emission Spectrometric
2.1 The following documents of the issue in effect on date
Analysis of Aluminum and Aluminum Alloys by the
of order acceptance form a part of this specification to the
Point-to-Plane Technique
extent referenced herein:
E 290 Test Methods for Bend Testing of Material for
2.2 ASTM Standards:
Ductility
B 193 Test Method for Resistivity of Electrical Conductor
E 527 Practice for Numbering Metals and Alloys (UNS)
Materials
E 607 Test Method for Atomic Emission Spectrometric
B 317/B 317M Specification forAluminum-Alloy Extruded
Analysis Aluminum Alloys by the Point to Plane Tech-
Bar, Rod, Tube, Pipe, and Structural Profiles for Electrical
nique Nitrogen Atmosphere
Purposes (Bus Conductor)
E 716 Practices for Sampling Aluminum and Aluminum
B 557M Test Methods for Tension Testing Wrought and
Alloys for Spectrochemical Analysis
Cast Aluminum- and Magnesium-Alloy Products [Metric]
E 1004 Practice for Determining Electrical Conductivity
B 660 Practices for Packaging/Packing of Aluminum and
Using the Electromagnetic (Eddy-Current) Method
Magnesium Products
E 1251 Test Method for Analysis of Aluminum and Alumi-
E29 Practice for Using Significant Digits in Test Data to
num Alloys by Atomic Emission Spectrometry
Determine Conformance with Specifications
2.3 ANSI Standards:
E34 Test Methods for ChemicalAnalysis ofAluminum and
H35.1M Alloy and Temper Designation Systems for Alu-
minum
H35.2M Dimensional Tolerances for Aluminum Mill Prod-
This specification is under the jurisdiction of ASTM Committee B07 on Light
ucts
Metals and Alloys and is the direct responsibility of Subcommittee B07.03 on
Aluminum Alloy Wrought Products. 2.4 Military Standard:
Current edition approved May 1, 2006. Published May 2006. Originally
approved in 1983. Last previous edition approved in 2000 as B 236M – 00.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Withdrawn.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
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B 236M – 00 (2006)
MIL-STD-129 Marking for Shipment and Storage 5.2 Bars in the H12 temper shall be furnished with a rolled
2.5 Federal Standard: mill finish; bars in the H111 temper, with an as-extruded mill
Fed. Std. No. 123 Marking for Shipment (Civil Agencies) finish; and bars in the H112 temper, with a rolled mill finish
except that the edges shall be as sawed.
3. Terminology
6. Responsibility for Quality Assurance
3.1 Definitions:
3.1.1 bus conductor—a rigid electric conductor of any cross
6.1 Responsibility for Inspection and Tests—Unless other-
section.
wise specified in the contract or purchase order, the producer is
3.1.2 bar—a solid product that is long in relation to cross
responsible for the performance of all inspection and test
section, which is square or rectangular (excluding plate and
requirements specified herein. Except as otherwise specified in
flattened wire) with sharp or rounded corners or edges, or is a
the contract or order, the producer may use his own or any
regular hexagon or octagon, and in which at least one perpen-
other suitable facilities for the performance of the inspection
dicular distance between parallel faces is over 10 mm.
and test requirements specified herein, unless disapproved by
3.1.2.1 extruded bar—bar brought to final dimensions by
the purchaser. The purchaser shall have the right to perform
extruding.
any of the inspections and tests set forth in this specification
3.1.2.2 rolled bar—bar brought to final dimensions by hot
where such inspections are deemed necessary to assure that
rolling.
material conforms to prescribed requirements.
3.1.2.3 sawed-plate bar—bar brought to final thickness by
6.2 Lot Definition—An inspection lot shall consist of an
hot or cold rolling and to final width by sawing (sawed edges).
identifiable quantity of material of the same aluminum desig-
3.2 Definitions of Terms Specific to This Standard:
nation, temper, and thickness subjected to inspection at one
3.2.1 capable of—The term capable of as used in this
time.
specification means that the test need not be performed by the
producer of the material. However, should testing by the
7. Chemical Composition Requirements
purchaser establish that the material does not meet these
7.1 The material shall conform to the composition in Table
requirements, the material shall be subject to rejection.
2. Conformance shall be determined by the producer by
analyzing samples taken at the time the ingots or continuously
4. Ordering Information
cast bars are poured, or samples taken from the finished or
4.1 Orders for material to this specification shall include the
semifinished product. If the producer has determined the
following information:
composition of the material during the course of manufacture,
4.1.1 This specification designation (which includes the
he shall not be required to sample and analyze the finished
number, the year, and the revision letter, if applicable),
product.
4.1.2 Quantity in pieces or kilograms,
NOTE 3—It is standard practice in the United States aluminum industry
4.1.3 Temper (8.1),
to determine conformance to the composition limits prior to further
4.1.4 Edge contour (Section 12),
processing of ingots into wrought products. Due to the continuous nature
4.1.5 Diameter for rounds; distance across flats for square-
of the process, it is not practical to keep a specific ingot analysis identified
cornered squares, hexagons, or octagons; width and depth for
with a specific quantity of finished material.
square-cornered rectangles,
4.1.6 Length (specific or stock) (Section 14),
A
4.2 Additionally, orders for material to this specification
TABLE 2 Chemical Requirements
shall include the following information when required by the
Element Composition, %
purchaser:
Silicon, max 0.10
4.2.1 Whether inspection or witness of inspection and tests
Iron, max 0.40
Copper, max 0.05
by the purchaser’s representative is required prior to material
Manganese, max 0.01
shipment (16.1),
Chromium, max 0.01
4.2.2 Whether marking for identification is required (18.1),
Zinc, max 0.05
Boron, max 0.05
4.2.3 Whether Practices B 660 applies and, if so, the levels
Gallium, max 0.03
of preservation, packaging, and packing required (19.3), and
Vanadium + titanium, total, max 0.02
B
4.2.4 Whethercertificationofthematerialbytheproduceris
Other elements, each, max 0.03
BC
Other elements, total, max 0.10
required (Section 20).
D
Aluminum, min 99.50
A
Analysisshallbemadefortheelementsforwhichlimitsareshowninthistable.
5. Manufacture
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
analysis is not required and may not cover all metallic Others elements. Should
produced by extruding or rolling, at the option of the producer,
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
Other Elements—Total shall be the sum of unspecified metallic elements
0.010 % or more, rounded to the second decimal before determining the sum.
D
The aluminum content shall be calculated by subtracting from 100.00 % the
Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,
sumofallmetallicelementspresentinamountsof0.010 %ormoreeach,rounded
Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098. to the second decimal before determining the sum.
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B 236M – 00 (2006)
TABLE 3 Edgewise Bend Radii
7.2 Number of Samples—The number of samples taken for
determination of chemical composition shall be as follows: Specified Width, mm
Mandrel Radius, mm
7.2.1 When samples are taken at the time the ingots are
Over Through
poured, at least one sample shall be taken for each group of
... 12.50 12.5
ingots poured simultaneously from the same source of molten 12.50 25.00 25
25.00 40.00 40
metal.
40.00 50.00 50
7.2.2 When samples are taken from the finished or semifin-
50.00 65.00 65
ished product, a sample shall be taken to represent each 2000 65.00 75.00 75
75.00 90.00 90
kg or fraction thereof, in the shipment, except that not more
90.00 100.00 100
than one sample shall be required per piece.
7.3 Methods of Sampling—Samples for determination of
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 ofAluminum 1350 shall be taken as 2705
not less than 75 g. Sampling shall be in accordance with
kg/m .
PracticeE55.
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 0.0283 V·mm /m at 20°C corresponding to a conduc-
material being analyzed and the type of analytical method
tivity not less than 61.0 % of the International Annealed
used.
Copper Standard. To determine conformance with this speci-
7.4 Methods of Analysis—The determination of chemical
fication, each value for electrical resistivity shall be rounded to
composition shall be made in accordance with suitable chemi-
the nearest unit in the last right-hand place of figures, in
cal (Test Methods E34), or spectrochemical (Test Methods
accordance with the rounding method of PracticeE29.
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
fromarandombarrepresentingeach1500kgofbar,orfraction
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
8. Tensile Properties
or conductivity shall preferably be a full section of the
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 1500 kg 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 Methods 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 557M.
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 H35.2M.
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-
quirements of ANSI H35.2M. Table 4 lists the dimensions
whose width-to-thickness ratios are not in excess of 12 and
involved and the applicable H35.2M table numbers.
whose width is 100 mm or less, shall be capable of being bent
at room temperature edgewise 90° around a mandrel having a
14. Length
radius shown in Table 3 without cracking or localized thinning
14.1 When stock lengths are specified, short lengths per
to less than 90 % of the maximum thickness within the central
60° of the bend when measured along the outer edge of the Table 5 may be furnished.
bend. Bending requirements for bar wider than 100 mm shall
15. General Quality
be as agreed upon by the producer
...