ASTM B233 - 97(2012) Standard Specification for Aluminum 1350 Drawing Stock for Electrical Purposes

Abstract

This specification covers aluminium 1350 drawing stock for electrical purposes. The stock shall conform to the chemical composition requirements. The stock shall be uniform in quality and temper and shall be suitable for drawing into wire. The tensile strength tests and requirements for the respective tempers of stock are presented in details. The stock shall be furnished in continuous-length coils without joints, unless otherwise agreed upon between the manufacturer and purchaser. The electrical resistivity tests shall be made on full-section samples of the stock.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

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).

TABLE 1 Tensile Property Limits^A

Temper	Tensile Strength
Temper	ksi	MPa
1350-O	8.5???14.0	59???97
1350-H12 and -H22	12.0???17.0	83???117
1350-H14 and -H24	15.0???20.0^A	103???138
1350-H16 and -H26	17.0???22.0^A	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.

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.

TABLE 2 Chemical Requirements^A

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

Temper	Resistivity, ???? mm²/m, max	Equivalent Volume Conductivity, % 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

TABLE 4 Equivalent Resistivity Values at 20??C^A

Material	Volume Conductivity, % IACS	Resistivity Constants
		Volume
		????mm²/m	????cmil/ft	??????in.	??????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 (¹/₅₈ ????mm²/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.

TABLE 5 Diameter Tolerances

Specified Diameter, in. (mm)	Tolerance, in. (mm), Plus or Minus
Specified Diameter, in. (mm)	Deviation of Mean^A Diameter from Specified Diameter	Deviation at Any Point from Specified Diameter
0.375???0.500 (9.52???12.70) 0.501???1.00 (12.73???25.40)	0.020 (0.51) 0.025 (0.64)	0.030 (0.76) 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.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

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
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)

American National Standard

ANSIH35.1 Alloy and Temper Designation Systems for Aluminum

National Bureau of Standards

Handbook100 Copper Wire Tables

Keywords

aluminum; aluminum drawing stock; aluminum wire; drawing stock; wire;

ICS Code

ICS Number Code 77.150.10 (Aluminium products)

DOI: 10.1520/B0233-97R12

ASTM International is a member of CrossRef.

ASTM B233 (Electrical Standards and Magnetic Conductor Standards)

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