ASTM B233-97(2016)

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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: B233 − 97 (Reapproved 2012) B233 − 97 (Reapproved 2016)
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
1.1 This specification covers aluminum 1350 drawing stock 0.375 in. (9.52 mm) to 1.000 in. (25.40 mm) in diameter, in the
tempers shown in Table 1, for drawing into wire for electrical conductors (Explanatory Note 1 and Note 2).
1.2 The SI values of density and resistivity are to be regarded as the standard. For all other properties the inch-pound values
are to be regarded as standard and the SI units may be approximate.
NOTE 1—Prior to 1975, aluminum 1350 was designated as EC aluminum.
NOTE 2—The aluminum and temper designations conform to ANSI H35.1. Aluminum 1350 corresponds to unified numbering system A91350 in
accordance with Practice E527.
2. Referenced Documents
2.1 The following documents of the issue in effect on date of material purchase form a part of this specification to the extent
referenced herein:
2.2 ASTM Standards:
B193 Test Method for Resistivity of Electrical Conductor Materials
B354 Terminology Relating to Uninsulated Metallic Electrical Conductors
B557 Test Methods for Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products
B830 Specification for Uniform Test Methods and Frequency
E34 Test Methods for Chemical Analysis of Aluminum and Aluminum-Base Alloys
E55 Practice for Sampling Wrought Nonferrous Metals and Alloys for Determination of Chemical Composition
E227 Test Method for Optical Emission Spectrometric Analysis of Aluminum and Aluminum Alloys by the Point-to-Plane
Technique (Withdrawn 2002)
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
2.3 American National Standard:
ANSI H35.1 Alloy and Temper Designation Systems for Aluminum
2.4 National Bureau of Standards:
NBS Handbook 100 Copper Wire Tables
3. Ordering Information
3.1 Orders for material under this specification shall include the following information:
3.1.1 Quantity,
3.1.2 Diameter (see 11.1),
3.1.3 Temper (see Table 1 and Explanatory Note 1 and Note 2),
3.1.4 Whether joints are permitted (see 8.1),
3.1.5 Whether tests of joints are required and number of specimens (see 8.2),
This specification is under the jurisdiction of ASTM Committee B01 on Electrical Conductors and is the direct responsibility of Subcommittee B01.07 on Conductors
of Light Metals.
Current edition approved Oct. 15, 2012Oct. 1, 2016. Published November 2012October 2016. Originally approved in 1948. Last previous edition approved in 20072012
as B233 – 97 (2007).(2012). DOI: 10.1520/B0233-97R12.10.1520/B0233-97R16.
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B233 − 97 (2016)
A
TABLE 1 Tensile Property Limits
Tensile Strength
Temper
ksi MPa
1350-O 8.5–14.0 59–97
1350-H12 and -H22 12.0–17.0 83–117
A
1350-H14 and -H24 15.0–20.0 103–138
A
1350-H16 and -H26 17.0–22.0 117–152
A
Applicable to stock sizes through 0.500-in. (12.70-mm) diameter. The values to
apply for larger sizes in these tempers shall be negotiated at time of inquiry.
A
TABLE 2 Chemical Requirements
Element Composition, %
Silicon, max 0.10
Iron, max 0.40
Copper, max 0.05
Manganese, max 0.01
Chromium, max 0.01
Zinc, max 0.05
Boron, max 0.05
Gallium, max 0.03
Vanadium plus titanium, total, max 0.02
Other elements, each, max 0.03
Other elements, total, max 0.10
Aluminum, min 99.50
A
Analysis shall regularly be made only for the elements specified in this table. If,
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
these elements are not present in amounts in excess of the specified limits.
TABLE 3 Electrical Resistivity Limits
Equivalent Volume
Resistivity, Ω·
Temper Conductivity,
mm /m, max
% IACS, min
1350-O 0.027899 61.8
1350-H12 and -H22 0.028035 61.5
1350-H14 and -H24 0.028080 61.4
1350-H16 and -H26 0.028126 61.3
A
TABLE 4 Equivalent Resistivity Values at 20°C
Resistivity Constants
Volume
Material Conductivity, Volume
% IACS 2
Ω·mm /m Ω·cmil/ft μΩ·in. μΩ·cm
Copper 100 0.017241 10.371 0.67879 1.7241
Aluminum 61.3 0.028126 16.919 1.1073 2.8126
61.4 0.028080 16.891 1.1055 2.8080
61.5 0.028035 16.864 1.1037 2.8035
61.8 0.027899 16.782 1.0984 2.7899
A
The equivalent resistivity values for 100 % IACS conductivity were each
computed from the fundamental IEC value ( ⁄58 Ω·mm /m) using conversion factors
each accurate to at least seven significant figures. Corresponding values for other
conductivities (aluminum) were derived from these by multiplying by the reciprocal
of the conductivity ratios accurate to at least seven significant figures.
3.1.6 Coil size and weight (see 14.2),
3.1.7 Whether wrapping of coils is required (see 14.3),
3.1.8 Special marking on tags, if required (see 14.4), and
3.1.9 Whether inspection or witness of inspection and tests by purchaser’s representative is required prior to shipment (see
Section 13).
4. Manufacture
4.1 Unless otherwise agreed upon at the time of placing the order, the manufacturer shall have the option of producing the stock
from either individually cast ingots or continuously cast bars. Only one method of production shall be used on any given order.
B233 − 97 (2016)
TABLE 5 Diameter Tolerances
Tolerance, in. (mm), Plus or Minus
A
Specified Diameter, in.
Deviation of Mean Deviation at Any
Diameter from
(mm) Point from
Specified Diameter
Specified Diameter
0.375–0.500 (9.52–12.70) 0.020 (0.51) 0.030 (0.76)
0.501–1.00 (12.73–25.40) 0.025 (0.64) 0.035 (0.89)
A
For this specification, mean diameter is the average of the maximum diameter
and the minimum diameter measured in the same transverse plane along the
length.
4.2 Unless otherwise specified, the manufacturer shall have the option of supplying stock in the H2X temper when H1X is
specified, and of supplying stock in the H1X temper when H2X is specified. Only one temper shall be supplied in any given order
(see Explanatory Note 3 and ANSI H35.1).
5. Chemical Composition
5.1 The stock shall conform to the requirements of Table 2 as to chemical composition. Conformance shall be determined by
the manufacturer by analyzing samples taken at the time the ingots or continuously cast bars are poured, or samples taken from
the finished or semifinished product. If the manufacturer has determined the chemical composition of the material during the course
of manufacture, he shall not be required to sample and analyze the finished product.
5.2 Number of Samples—The number of samples taken for determination of chemical composition shall be as follows:
5.2.1 When samples are taken at the time the ingots are poured, at least one sample shall be taken to represent each group of
ingots poured simultaneously from the same source of molten metal.
5.2.2 When samples are taken at the time continuously cast bars are poured, at least one sample shall be taken to represent the
continuously cast length poured from each furnace load of molten metal.
5.2.3 When samples are taken from the finished or semifinished product, a sample shall be taken to represent each 5000 lb (2300
kg) or fraction thereof of material in the shipment, except that no more than one sample shall be required per continuous unjointed
coil.
5.3 Methods of Sampling—Samples for determination of chemical composition shall be taken in accordance with one of the
following methods:
5.3.1 Samples for chemical analysis shall be taken from the material by drilling, sawing, milling, turning, or clipping a
representative piece or pieces to obtain a weight of prepared sample not less than 75 g. Sampling shall be in accordance with
Practice E55.
5.3.2 Samples for spectrochemical and other methods of a
...