ASTM B624-07(2012)

Standard Specification for High-Strength, High-Conductivity Copper-Alloy Wire for Electronic Application

ABSTRACT
This specification covers high-strength, high conductivity round copper-alloy wire used for electronic hook-up wire. The wires shall conform to the required minimum breaking strength and elongation. Electrical resistance and diameter of the wire shall be measured. The finished material shall be free of defects that detract from the normal end use or longevity of the product. Joints necessary to processing shall be of such quality that all requirements are met.
SCOPE
1.1 This specification covers high-strength, high-conductivity round copper-alloy wire 0.00099 to 0.0720 in. [0.025 to 1.829 mm] in diameter, used for electronic hookup wire. The tensile strength of the wire is 60 ksi [414 MPa] minimum and the electrical conductivity at 20°C is 85 % IACS minimum.  
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 14-Oct-2012
• ICS: 29.060.10 - Wires
• Technical Committee: B01 - Electrical Conductors
• Drafting Committee: B01.04 - Conductors of Copper and Copper Alloys

Relations

• Replaces: ASTM B624-07 - Standard Specification for High-Strength, High-Conductivity Copper-Alloy Wire for Electronic Application
• Effective Date: 15-Oct-2012
• Replaced By: ASTM B624-07(2017) - Standard Specification for High-Strength, High-Conductivity Copper-Alloy Wire for Electronic Application
• Effective Date: 01-Sep-2017
• Referred By: ASTM B961-13(2019) - Standard Specification for Silver Coated Copper and Copper Alloy Stranded Conductors for Electronic Space Application
• Effective Date: 15-Oct-2012

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:B624 −07 (Reapproved 2012)
Standard Specification for
High-Strength, High-Conductivity Copper-Alloy Wire for
Electronic Application
This standard is issued under the fixed designation B624; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 4. Materials and Manufacture
1.1 This specification covers high-strength, high-
4.1 The wire shall be copper alloy of such quality and purity
conductivity round copper-alloy wire 0.00099 to 0.0720 in. that the finished product shall have the properties and charac-
[0.025 to 1.829 mm] in diameter, used for electronic hookup teristics prescribed in this specification. Chemical analysis of a
wire. The tensile strength of the wire is 60 ksi [414 MPa] specific alloy is not a requirement of this specification unless
minimum and the electrical conductivity at 20°C is 85 % IACS definite agreement is reached between the manufacturer and
minimum. the purchaser in the placing of individual orders.
1.2 The values stated in inch-pound units are to be regarded
5. General Requirements
as the standard. The values given in parentheses are for
information only.
5.1 Tensile Properties—The minimum breaking strength
and elongation of the conductor shall be as prescribed in Table
1.3 This standard does not purport to address all of the
1. Breaking strengths of intermediate sizes may be calculated
safety concerns, if any, associated with its use. It is the
in accordance with Explanatory Note 1.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
5.2 Electrical Resistance—The electrical resistance of the
bility of regulatory limitations prior to use.
wire at a temperature of 20°C shall not exceed the values in
Table 1. Resistances of intermediate sizes may be calculated in
2. Referenced Documents
accordance with Explanatory Note 2.
2.1 ASTM Standards:
5.3 Diameter—The wire size shall be expressed as the
B193 Test Method for Resistivity of Electrical Conductor
diameter of the wire in decimal fractions of an inch to the
Materials
nearest 0.0001 in. [0.003 mm]. For diameters under 0.0100 in.
E8 Test Methods for Tension Testing of Metallic Materials
[0.254mm],thewireshallnotvaryfromthespecifieddiameter
by more than 60.0001 in. [0.003 mm]. For diameters 0.0100
3. Ordering Information
in. [0.254 mm] and over, the wire shall not vary from the
3.1 Orders for wire furnished to this specification shall specified diameter by more than 61 %, expressed to the
include the following information: nearest 0.0001 in. [0.003 mm].
3.1.1 Quantity (pounds or kilograms),
5.4 Joints—Joints necessary to processing shall be of such
3.1.2 Wire size (Table 1),
quality that all requirements of this specification are met.
3.1.3 Place of inspection (Section 7),
5.5 Finish—The finished material shall be free of defects
3.1.4 Package size (Section 9), and
that detract from the normal end use or longevity of the
3.1.5 Special marking, if required (Section 9).
product.Thematerialshallbesmooth,bright,clean,andfreeof
laps, slivers, seams, scratches, and other imperfections not
consistent with good commercial practice.
This specification is under the jurisdiction of ASTM Committee B01 on
Electrical Conductors and is the direct responsibility of Subcommittee B01.04 on
Conductors of Copper and Copper Alloys.
6. Test Method
Current edition approved Oct. 15, 2012. Published November 2012. Originally
6.1 Breaking Strength and Elongation —Conduct tension
approved in 1977. Last previous edition approved in 2007 as B624 – 07. DOI:
10.1520/B0624-07R12.
and elongation tests in accordance with Test Methods E8 and
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
with a rate of loading not to exceed 10 in./min [250 mm/min].
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
The breaking strength shall equal or exceed the value specified
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. in Table 1.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
B624−07 (2012)
TABLE 1 Tensile Properties and Resistance
Nominal Diameter Breaking Strength, min Elongation, Resistance, max, at 20°C
min, % in
10 in.
or 250
in. mm lbf N Ω/1000 ft Ω/km
mm
0.0720 1.829 239 1065 9 2.40 7.88
0.0641 1.628 190 844 9 3.03 9.94
0.0571 1.450 151 670 9 3.82 12.5
0.0508 1.290 119 530 9 4.82 15.8
0.0453 1.151 94.8 422 9 6.08 19.9
0.0403 1.024 75.0 334 9 7.66 25.1
0.0359 0.912 59.5 265 9 9.68 31.7
0.0320 0.813 47.3 210 9 12.1 39.9
0.0285 0.724 37.5 167 9 15.3 50.2
0.0253 0.643 29.6 132 9 19.5 63.7
0.0226 0.574 23.6 105 9 24.3 80.0
0.0201 0.511 18.7 83.1 9 30.8 101
0.0179 0.455 14.8 65.8 9 38.9 128
0.0159 0.404 11.7 52.0 9 49.5 161
0.0142 0.361 9.31 41.4 9 61.4 202
0.0126 0.320 7.33 32.6 9 78.1 257
0.0113 0.287 5.90 26.2 9 97.3 320
0.0100 0.254 4.62 20.6 8 124 408
0.0089 0.226 3.65 16.2 8 158 517
0.0080 0.203 2.94 13.1 8 195 643
0.0071 0.180 2.31 10.3 8 249 820
0.0063 0.160 1.81 8.1 8 317 1040
0.0056 0.142 1.43 6.3 8 403 1330
0.0050 0.127 1.13 5.0 7 508 1670
0.0045 0.114 0.91 4.0 7 630 2080
0.0040 0.102 0.72 3.2 7 802 2610
0.0035 0.089 0.54 2.4 7 1060 3450
0.0031 0.079 0.42 1.9 7 1360 4410
0.0028 0.071 0.34 1.5 6 1670 5490
0.0025 0.064 0.27 1.2 6 2120 6950
0.0022 0.056 0.21 0.9 6 2770 9080
0.0020 0.051 0.17 0.8 6 3380 11 100
A
0.00176 0.045 0.22 1.0 . 4430 14 500
A
0.00157 0.040 0.17 0.8 . 5650 18 500
A
0.00140 0.036 0.13 0.6 . 7220 23 700
A
0.00124 0.031 0.10 0.5 . 9390 30 800
...
A
0.00111 0.028 0.08 0.4 . 12 000 39 200
A
0.00099 0.025 0.06 0.3 . 15 400 50 500
A
These single ends will be hard temper.
6.2 Resistance—Measure resistance in accordance with Test themanufacturerandthepurchaseratthetimeofpurchase.The
Method B193. manufacturer shall afford the inspector representing the pur-
chaser all reasonable facilities to satisfy him that the material
6.3 Diameter—Make diameter measurements with a mi-
is being furnished in accordance with this specification (Ex-
crometer or equivalent caliper equipped with a vernier gradu-
planatory Note 3).
ated in 0.0001 in. or 0.003 mm. Gage each coil in three places,
7.1.1 Unless otherwise agreed upon between the manufac-
one near each end and one near the center. From each spool,
turer and the purchaser, conformance of the wire to the various
unreel approximately 12 ft [4 m] and gage the wire in six
requirementslistedinSection5shallbedeterminedonsamples
places between the second and twelfth foot from the end. The
taken from each lot of wire presented for acceptance.
average of the measurements obtained shall be considered the
wire size specified in 5.3. 7.1.2 The manufacturer, when requested befo
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