ASTM B233-97(2021)

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:B233 −97 (Reapproved 2021)
Standard Specification for
Aluminum 1350 Drawing Stock for Electrical Purposes
This standard is issued under the fixed designation B233; 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 E34 Test Methods for Chemical Analysis of Aluminum and
Aluminum-Base Alloys (Withdrawn 2017)
1.1 This specification covers aluminum 1350 drawing stock
E55 Practice for Sampling Wrought Nonferrous Metals and
0.375 in. (9.52 mm) to 1.000 in. (25.40 mm) in diameter, in the
Alloys for Determination of Chemical Composition
tempers shown in Table 1, for drawing into wire for electrical
E227 Test Method for Optical Emission Spectrometric
conductors (Explanatory Note 1 and Note 2).
Analysis of Aluminum and Aluminum Alloys by the
1.2 The SI values of density and resistivity are to be 3
Point-to-Plane Technique (Withdrawn 2002)
regarded as the standard. For all other properties the inch-
E527 Practice for Numbering Metals and Alloys in the
pound values are to be regarded as standard and the SI units
Unified Numbering System (UNS)
may be approximate.
2.3 ANSI Standard:
ANSI H35.1 Alloy and Temper Designation Systems for
NOTE 1—Prior to 1975, aluminum 1350 was designated as EC
aluminum. Aluminum
NOTE 2—The aluminum and temper designations conform to ANSI
2.4 National Bureau of Standards:
H35.1.Aluminum 1350 corresponds to unified numbering systemA91350
NBS Handbook 100Copper Wire Tables
in accordance with Practice E527.
1.3 This international standard was developed in accor-
3. Ordering Information
dance with internationally recognized principles on standard-
3.1 Orders for material under this specification shall include
ization established in the Decision on Principles for the
the following information:
Development of International Standards, Guides and Recom-
3.1.1 Quantity,
mendations issued by the World Trade Organization Technical
3.1.2 Diameter (see 11.1),
Barriers to Trade (TBT) Committee.
3.1.3 Temper (see Table 1 and Explanatory Note 1 and Note
2),
2. Referenced Documents
3.1.4 Whether joints are permitted (see 8.1),
2.1 The following documents of the issue in effect on date
3.1.5 Whether tests of joints are required and number of
of material purchase form a part of this specification to the
specimens (see 8.2),
extent referenced herein:
3.1.6 Coil size and weight (see 14.2),
2.2 ASTM Standards:
3.1.7 Whether wrapping of coils is required (see 14.3),
B193 Test Method for Resistivity of Electrical Conductor 3.1.8 Special marking on tags, if required (see 14.4), and
Materials
3.1.9 Whether inspection or witness of inspection and tests
B354 Terminology Relating to Uninsulated Metallic Electri- by purchaser’s representative is required prior to shipment (see
cal Conductors
Section 13).
B557 Test Methods for Tension Testing Wrought and Cast
4. Manufacture
Aluminum- and Magnesium-Alloy Products
B830 Specification for Uniform Test Methods and Fre-
4.1 Unless otherwise agreed upon at the time of placing the
quency
order, the manufacturer shall have the option of producing the
stock from either individually cast ingots or continuously cast
1 bars. Only one method of production shall be used on any
This specification is under the jurisdiction of ASTM Committee B01 on
Electrical Conductors and is the direct responsibility of Subcommittee B01.07 on
given order.
Conductors of Light Metals.
Current edition approved Oct. 1, 2021. Published October 2021. Originally
approved in 1948. Last previous edition approved in 2016 as B233 – 97 (2016). The last approved version of this historical standard is referenced on
DOI: 10.1520/B0233-97R21. www.astm.org.
2 4
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available fromAmerican 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.
Standards volume information, refer to the standard’s Document Summary page on Available from National Technical Information Service (NTIS), 5301 Shawnee
the ASTM website. Rd., Alexandria, VA 22312, http://www.ntis.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
B233−97 (2021)
A
TABLE 1 Tensile Property Limits TABLE 5 Diameter Tolerances
Tensile Strength
Tolerance, in. (mm), Plus or Minus
Temper
A
Specified Diameter, Deviation of Mean Deviation at Any
ksi MPa
Diameter from
in. (mm) Point from
1350-O 8.5–14.0 59–97
Specified Diameter
Specified Diameter
1350-H12 and -H22 12.0–17.0 83–117
0.375–0.500 (9.52–12.70) 0.020 (0.51) 0.030 (0.76)
A
1350-H14 and -H24 15.0–20.0 103–138
0.501–1.00 (12.73–25.40) 0.025 (0.64) 0.035 (0.89)
A
1350-H16 and -H26 17.0–22.0 117–152
A
For this specification, mean diameter is the average of the maximum diameter
A
Applicable to stock sizes through 0.500-in. (12.70-mm) diameter. The values to
and the minimum diameter measured in the same transverse plane along the
apply for larger sizes in these tempers shall be negotiated at time of inquiry.
length.
A
TABLE 2 Chemical Requirements
by the manufacturer by analyzing samples taken at the time the
Element Composition, %
ingots or continuously cast bars are poured, or samples taken
Silicon, max 0.10
from the finished or semifinished product. If the manufacturer
Iron, max 0.40
Copper, max 0.05
has determined the chemical composition of the material
Manganese, max 0.01
during the course of manufacture, he shall not be required to
Chromium, max 0.01
sample and analyze the finished product.
Zinc, max 0.05
Boron, max 0.05
5.2 Number of Samples—The number of samples taken for
Gallium, max 0.03
determination of chemical composition shall be as follows:
Vanadium plus titanium, total, max 0.02
Other elements, each, max 0.03
5.2.1 When samples are taken at the time the ingots are
Other elements, total, max 0.10
poured, at least one sample shall be taken to represent each
Aluminum, min 99.50
groupofingotspouredsimultaneouslyfromthesamesourceof
A
Analysis shall regularly be made only for the elements specified in this table. If,
molten metal.
however, the presence of other elements is suspected or indicated in amounts
greater than the specified limits, further analysis shall be made to determine that
5.2.2 When samples are taken at the time continuously cast
these elements are not present in amounts in excess of the specified limits.
bars are poured, at least one sample shall be taken to represent
the continuously cast length poured from each furnace load of
molten metal.
TABLE 3 Electrical Resistivity Limits
5.2.3 When samples are taken from the finished or semifin-
Equivalent Volume
Resistivity,
ishedproduct,asampleshallbetakentorepresenteach5000 lb
Temper Conductivity,
Ω·mm /m, max
% IACS, min (2300 kg) or fraction thereof of material in the shipment,
1350-O 0.027899 61.8 except that no more than one sample shall be required per
1350-H12 and -H22 0.028035 61.5
continuous unjointed coil.
1350-H14 and -H24 0.028080 61.4
1350-H16 and -H26 0.028126 61.3
5.3 Methods of Sampling—Samples for determination of
chemical composition shall be taken in accordance with one of
the following methods:
A
TABLE 4 Equivalent Resistivity Values at 20°C
5.3.1 Samples for chemical analysis shall be taken from the
Resistivity Constants
Volume
material by drilling, sawing, milling, turning, or clipping a
Material Conductivity, Volume
representative piece or pieces to obtain a weight of prepared
% IACS 2
Ω·mm /m Ω·cmil/ft µΩ·in. µΩ·cm
sample not less than 75 g. Sampling shall be in accordance
Copper 100 0.017241 10.371 0.67879 1.7241
with Practice E55.
5.3.2 Samples for spectrochemical and other methods of
Aluminum 61.3 0.028126 16.919 1.1073 2.8126
61.4 0.028080 16.891 1.1055 2.8080
analysis shall be suitable for the form of material being
61.5 0.028035 16.864 1.1037 2.8035
analyzed and the type of analytical method used.
61.8 0.027899 16.782 1.0984 2.7899
A
5.4 Methods of Analysis—The determination of chemical
The equivalent resistivity values for 100 % IACS conductivity were each com-
1 2
puted from the fundamental IEC value ( ⁄58Ω·mm /m) using conversion factors
composition shall be made in accordance with suitable chemi-
each accurate to at least seven significant figures. Corresponding values for other
cal (Test Methods E34), spectrochemical (Test Method E227),
conductivities (aluminum) were derived from these by multiplying by the reciprocal
or other methods.
of the conductivity ratios accurate to at least seven significant figures.
6. Workmanship
6.1 The stock shall be uniform in quality and temper and
4.2 Unles
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