ASTM B2-13
(Specification)Standard Specification for Medium-Hard-Drawn Copper Wire
Standard Specification for Medium-Hard-Drawn Copper Wire
ABSTRACT
This specification covers medium-hard-drawn round copper wire for electrical purposes. The material shall be copper of such quality and purity that the finished product shall have the properties and characteristics prescribed. Tensile test and electrical resistivity test shall be made to conform to the requirements specified.
SCOPE
1.1 This specification covers medium-hard-drawn round copper wire for electrical purposes (see Explanatory Note 1).
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.2.1 Exception—For density, resistivity and temperature, the values stated in SI units are to be regarded as standard.
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.
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Designation:B2 −13
Standard Specification for
1
Medium-Hard-Drawn Copper Wire
This standard is issued under the fixed designation B2; the number immediately following the designation indicates the year of original
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
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 3. Ordering Information
1.1 This specification covers medium-hard-drawn round
3.1 Orders for material under this specification shall include
copper wire for electrical purposes (see Explanatory Note 1). the following information:
3.1.1 Quantity of each size;
1.2 The values stated in inch-pound units are to be regarded
3.1.2 Wire size: diameter in inches (see 5.3 and Table 1);
as standard. The values given in parentheses are mathematical
3.1.3 Type of copper, if special (see Section 4);
conversions to SI units that are provided for information only
3.1.4 Package size (see 10.1);
and are not considered standard.
3.1.5 Special package marking, if required; and
1.2.1 Exception—For density, resistivity and temperature,
3.1.6 Place of inspection (Section 7).
the values stated in SI units are to be regarded as standard.
1.3 This standard does not purport to address all of the
4. Materials
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- 4.1 The material shall be copper of such quality and purity
that the finished product shall have the properties and charac-
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. teristics prescribed in this specification.
NOTE 1—Specification B49 defines copper suitable for use.
2. Referenced Documents
4.2 Copper bars of special qualities, forms, or types, as may
2.1 The following documents of the issue in effect at the
be agreed upon between the manufacturer and the purchaser,
time of reference form a part of this specification to the extent
and which will conform to the requirements prescribed in this
referenced herein:
specification, may also be used.
2
2.2 ASTM Standards:
B49 Specification for Copper Rod Drawing Stock for Elec-
5. General Requirements (see Section 8)
trical Purposes
5.1 Tensile Strength and Elongation—The wire shall con-
B193 Test Method for Resistivity of Electrical Conductor
form to the requirements as to tensile properties prescribed in
Materials
Table 1 (Explanatory Note 3 and Note 4). For wire whose
B258 Specification for Nominal Diameters and Cross-
nominal diameter is more than 0.001 in. (0.025 mm) greater
SectionalAreasofAWGSizesofSolidRoundWiresUsed
than a size listed in Table 1, but which is less than that of the
as Electrical Conductors
next larger size, the requirements of the next larger size shall
2.3 Other Documents:
apply.
NBS Handbook 100 Copper Wire Tables of the National
5.1.1 Tests on a specimen containing a joint shall show at
3
Bureau of Standards
least 95 % of the minimum tensile strength given in Table 1.
Elongation tests shall not be made on a specimen containing a
1 joint.
This specification is under the jurisdiction of ASTM Committee B01 on
Electrical Conductors and is the direct responsibility of Subcommittee B01.04 on
5.2 Resisitivity—Electrical resistivity at 20°C shall not ex-
Conductors of Copper and Copper Alloys.
ceed the following values (see Explanatory Note 5):
Current edition approved Oct. 1, 2013. Published October 2013. Originally
ε1
approved in 1912. Last previous edition approved in 2012 as B2 – 12 . DOI:
Nominal Diameter, in. Resistivity at 20°C,
10.1520/B0002-13. 2 2
Ω·lb/mile Ω·g/m
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
0.460 to 0.325 (11.684 to 8.255 mm), incl 896.15 0.15694
Standards volume information, refer to the standard’s Document Summary page on
Under 0.325 to 0.0403 (8.255 to 1.024 mm), incl 905.44 0.15857
the ASTM website.
3
5.3 Dimensions and Permissible Variations—Within the
Available from National Institute of Standards and Technology (NIST), 100
Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070, http://www.nist.gov. range of diameters included in Table 1 the wire shall not vary
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
B2−13
TABLE 1 Tensile Requirements
Diameter Area at 20°C Tensile Strength Elongation, min,
% in 10-in.
2 2
in. mm cmil in. mm psi MPa
(250 mm)
Min Max Min Max
0.4600 11.684 211 600 0.1662 107.0 42 000 49 000 290 340 3.8
0.4096 10.404 167 800 0.1318 85.0 43 000
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
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.
´1
Designation: B2 − 12 B2 − 13
Standard Specification for
1
Medium-Hard-Drawn Copper Wire
This standard is issued under the fixed designation B2; 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
ε NOTE—Footnote 3 was editorially updated in February 2013.
1. Scope
1.1 This specification covers medium-hard-drawn round copper wire for electrical purposes (see Explanatory Note 1).
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.2.1 Exception—The SI values of density and resistivityFor density, resistivity and temperature, the values stated in SI units
are to be regarded as standard.
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.
2. Referenced Documents
2.1 The following documents of the issue in effect on date of material purchase at the time of reference form a part of this
specification to the extent referenced herein:
2
2.2 ASTM Standards:
B5 Specification for High Conductivity Tough-Pitch Copper Refinery Shapes
B49 Specification for Copper Rod Drawing Stock for Electrical Purposes
B170 Specification for Oxygen-Free Electrolytic Copper—Refinery Shapes
B193 Test Method for Resistivity of Electrical Conductor Materials
B258 Specification for Nominal Diameters and Cross-Sectional Areas of AWG Sizes of Solid Round Wires Used as Electrical
Conductors
2.3 Other DocumentsDocuments::
3
NBS Handbook 100 Copper Wire Tables of the National Bureau of Standards
3. Ordering Information
3.1 Orders for material under this specification shouldshall include the following information:
3.1.1 Quantity of each size;
3.1.2 Wire size: diameter in inches (see 5.15.3 and Table 1);
3.1.3 Type of copper, if special (see Section 4);
3.1.4 Package size (see 11.110.1);
3.1.5 Special package marking, if required; and
3.1.6 Place of inspection (Section 107).
1
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.
Current edition approved Nov. 15, 2012Oct. 1, 2013. Published November 2012October 2013. Originally approved in 1912. Last previous edition approved in 20082012
ε1
as B2 – 08.B2 – 12 . DOI: 10.1520/B0002-12E01.10.1520/B0002-13.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from National Institute of Standards and Technology (NIST), 100 Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070, http://www.nist.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
B2 − 13
TABLE 1 Tensile Requirements
Diameter Area at 20°C Tensile Strength Elongation, min,
%in % in 10-in.
2 2
in. mm cmil in. mm psi MPa
(250 mm)
Min Max Min Max
0.4600 11.684 211 600 0.1662 107.0 42 000 49 000 290 340 3.8
0.4096 10.404 167 800 0.1318 85.0 43 000 50 000 295 345 3.6
0.3648 9.266 133 100 0.1045 67.4 44 000 51 000 305 350 3.2
0.3249 8.252 105 600 0.08291 53.5 45 000 52 000 310 360 3.0
0.2893 7.348 83 690 0.06573 42.4 46 000 53 000 315 365 2.8
0.2576 6.543 66 360 0.05212 33.6 47 000 54 000 325 370 2.5
0.2294 5.827 52 620 0.04133 26.7 48 000 55 000 330 380 2.2
0.2043 5.189 41 740 0.03278 21.2 48 330 55 330 335 380 1.9
0.1819 4.620 33 090 0.02599 16.8 48 660 55 660 335 385 1.7
0.1620 4.115 26 240 0.02061 13.3 49 000 56 000 340 385 1.5
0.1443 3.665 20 820 0.01635 10.5 49 330 56 330 340 390 1.4
0.1285 3.264 16 510 0.01297 8.37 49 660 56 660 340 390 1.3
0.1144 2.906 13 090 0.01028 6.63 50 000 57 000 345 395 1.3
0.1019 2.588 10 380 0.00816 5.26 50 330 57 330 345 395 1.2
0.0907 2.304 8 230 0.00646 4.17 50 660 57 600 350 400 1.2
0.0808 2.052 6 530
...
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