ASTM B682-01(2009)e1

Standard Specification for Standard Metric Sizes of Electrical Conductors

ABSTRACT
This specification prescribes the recommended standard metric sizes of solid round electrical conductors. The standard diameters of metric sizes of wires are preferred numbers calculated in accordance with the conventional mathematical principles. The standard metric size of stranded conductors and equivalent cross-sectional areas shall be designated.
SCOPE
1.1 This specification covers and prescribes the recommended standard metric sizes of solid round electrical conductors.  
1.2 This specification prescribes the recommended standard metric size designations of stranded electrical conductors (see Explanatory Note 1).
Note 1: Physical properties, construction requirements, and manufacturing tolerances for specific products should be included in individual product specifications developed in accordance with appropriate sizes in this specification.  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3.1 Exceptions — For conductor sizes designated by AWG or kcmil, the requirements in SI units have been numerically converted from corresponding values, stated or derived, in inch-pound units. For conductor sizes designated by SI units only, the requirements are stated or derived in SI units. Rounded values appear in Table 1. (A) The inch diameters, square inch areas, and circular mil areas are rounded values calculated from the metric diameters.

General Information

• Status: Historical
• Publication Date: 31-Mar-2009
• ICS: 29.050 - Superconductivity and conducting materials
• Technical Committee: B01 - Electrical Conductors
• Drafting Committee: B01.02 - Methods of Test and Sampling Procedure

Relations

• Replaces: ASTM B682-01(2009) - Standard Specification for Standard Metric Sizes of Electrical Conductors
• Effective Date: 01-Apr-2009
• Replaced By: ASTM B682-01(2016) - Standard Specification for Standard Metric Sizes of Electrical Conductors
• Effective Date: 01-Oct-2016
• Referred By: ASTM B231/B231M-16(2021) - Standard Specification for Concentric-Lay-Stranded Aluminum 1350 Conductors
• Effective Date: 01-Apr-2009
• Referred By: ASTM B524/B524M-23 - Standard Specification for Concentric-Lay-Stranded Aluminum Conductors, Aluminum-Alloy Reinforced (ACAR, 1350/6201)
• Effective Date: 01-Apr-2009
• Referred By: ASTM B609/B609M-12(2021) - Standard Specification for Aluminum 1350 Round Wire, Annealed and Intermediate Tempers, for Electrical Purposes
• Effective Date: 01-Apr-2009
• Referred By: ASTM B399/B399M-23 - Standard Specification for Concentric-Lay-Stranded Aluminum-Alloy 6201-T81 and 6201-T83 Conductors
• Effective Date: 01-Apr-2009

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
´1
Designation:B682 −01(Reapproved 2009)
Standard Specification for
Standard Metric Sizes of Electrical Conductors
This standard is issued under the fixed designation B682; 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.
ε NOTE— Editorial changes were made in Tables 1 and 2 in November 2015.
1. Scope IEC228 NominalCross-SectionalAreasandCompositionof
Conductors of Insulated Cables
1.1 This specification covers and prescribes the recom-
2.3 ISO Standards:
mended standard metric sizes of solid round electrical conduc-
tors. ISO R388 Metric Series for Basic Thickness of Sheet and
Diameters of Wire
1.2 This specification prescribes the recommended standard
metric size designations of stranded electrical conductors (see
3. Standard Reference Temperature
Explanatory Note 1).
3.1 Forthepurposeofthisspecification,allwiredimensions
NOTE 1—Physical properties, construction requirements, and manufac-
and properties shall be considered as occurring at the interna-
turing tolerances for specific products should be included in individual
tionally standardized reference temperature of 20°C.
product specifications developed in accordance with appropriate sizes in
this specification.
4. Preferred Numbers
1.3 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this
4.1 The diameters in Table 1 and preferred cross-sectional
standard.
areas in Table 2 are rounded preferred numbers from R
1.3.1 Exceptions — For conductor sizes designated by
(Renard) series in accordance with ISO R388.
AWG or kcmil, the requirements in SI units have been
NOTE 2—The use of preferred numbers has many advantages and the
numerically converted from corresponding values, stated or
values selected do not vary significantly from the calculated numbers of
derived,ininch-poundunits.Forconductorsizesdesignatedby
the series used. The preferred and second preference size designations,
SI units only, the requirements are stated or derived in SI units. using a Renard series of numbers, provides a schedule of interrelated sizes
for aluminum and copper conductors.
Rounded values appear in Table 1.
NOTE 3—Should sizes be needed either larger or smaller than those
listed in Table 1 or Table 2, the respective R series may be expanded
2. Referenced Documents
upward or downward.
2.1 ASTM Standards:
E29 Practice for Using Significant Digits in Test Data to
5. Standard Rules for Rounding
Determine Conformance with Specifications
5.1 All calculations for dimensions and properties, other
F205 Test Method for Measuring Diameter of Fine Wire by
than as provided in Section 4, shall be rounded in the final
Weighing
values only, in accordance with the rounding method of
2.2 IEC Standards:
Practice E29.
IEC 182 Basic Dimensions of Winding Wires
6. Standard Round-Wire Diameters (Note 2)
6.1 The standard diameters of metric sizes of wires are
This specification is under the jurisdiction of ASTM Committee B01 on
preferred numbers calculated in accordance with the conven-
Electrical Conductorsand is the direct responsibility of Subcommittee B01.02 on
tional mathematical principles of an R series of 20 numbers
Methods of Test and Sampling Procedure.
Current edition approved April 1, 2009. Published May 2009. Originally from 1 to 10 with multiples and submultiples of 10.
approved in 1981. Last previous edition approved in 2001 as B682 – 01. DOI:
6.2 The wire diameters shall be expressed to no more than
10.1520/B0682-01R09E01.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or three significant figures plus zeros.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
6.3 For wire diameters 0.050 mm and over, diameters shall
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. be expressed to three decimal places.
International Electrotechnical Commission and International Organization for
6.4 For wire diameters less than 0.050 mm, diameters shall
Standardization documents are available from the American National Standards
Institute (ANSI), 11 West 42nd St., 13th Floor, New York, NY 10036. be expressed to four decimal places.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
´1
B682−01 (2009)
TABLE 1 Standard Metric Diameters and Cross-Sectional Areas of Solid Round Wires at 20°C
Diameter Cross-Sectional Area
A 2 2, A A A
mm (R 20 Series) in. mm in. kcmil cmil
18.0 0.7087 254.5 0.3944 502.2
16.0 0.6299 201.1 0.3116 396.8
14.0 0.5518 153.9 0.2386 303.8
12.5 0.4921 122.7 0.1902 242.2
11.2 0.4409 98.52 0.1527 194.4
10.0 0.3937 78.54 0.1217 155.0
9.00 0.3543 63.62 0.09861 125.6
8.00 0.3150 50.27 0.07791 99.2
7.10 0.2795 39.59 0.06137 78.14
6.30 0.2480 31.17 0.04832 61.52
5.60 0.2205 24.63 0.03818 48.61
5.00 0.1969 19.63 0.03043 38.75
4.50 0.1772 15.90 0.02465 31.39
4.00 0.1575 12.57 0.01948 24.80
3.55 0.1398 9.898 0.01534 19.53
3.15 0.1240 7.793 0.01208 15.38
2.80 0.1102 6.158 0.00954 12.15
2.50 0.0984 4.909 0.00761 9.69
2.24 0.0882 3.941 0.00611 7.78
2.00 0.0787 3.142 0.00487 6.20
1.80 0.0709 2.545 0.00394 5.02
1.60 0.0630 2.011 0.00312 3.97
1.40 0.0551 1.539 0.00239 3.04
1.25 0.0492 1.227 0.00190 2.42
1.12 0.0441 0.985 0.00153 1.94
1.00 0.0394 0.785 0.00122 1.55
0.900 0.0354 0.636 0.000986 1.26
0.800 0.0315 0.503 0.000779 0.992
0.710 0.0280 0.396 0.000614 0.781
0.630 0.0248 0.312 0.000483 0.615
0.560 0.0220 0.246 0.000382 0.486
0.500 0.0197 0.196 0.000304 0.388
0.450 0.0177 0.159 0.000247 0.314
0.400 0.0157 0.126 0.000195 0.248
0.355 0.0140 0.0990 0.000153 0.195
0.315 0.0124 0.0779 0.000121 154
0.280 0.0010 0.0616 0.0000954 122
0.250 0.0098 0.0491 0.0000761 96.9
0.224 0.0088 0.0394 0.0000611 77.8
0.200 0.0079 0.0314 0.0000487 62.0
0.180 0.0071 0.0254 0.0000394 50.2
0.160 0.0063 0.0201 0.0000312 39.7
0.140 0.0055 0.0154 0.0000239 30.4
0.125 0.0049 0.0123 0.0000190 24.2
0.112 0.0044 0.00985 0.0000153 19.4
0.100 0.0039 0.00785 0.0000122 15.5
0.090 0.0035 0.00636 0.00000986 12.6
0.080 0.0031 0.00503 0.00000779 9.92
0.071 0.0028 0.00396 0.00000614 7.81
0.063 0.0025 0.00312 0.00000483 6.15
0.056 0.0022 0.00246 0.00000382 4.86
0.050 0.0020 0.00196 0.00000304 3.88
0.045 0.00177 0.00159 0.00000247 3.14
0.040 0.00157 0.00126 0.00000195 2.48
0.036 0.00142 0.00102 0.00000158 2.01
0.032 0.00126 0.000804 0.00000125 1.59
0.028 0.00110 0.000616 0.000000954 1.22
0.025 0.00098 0.000491 0.000000761 0.969
0.022 0.00088 0.000394 0.000000611 0.778
´1
B682−01 (2009)
TABLE1 Continued
Diameter Cross-Sectional Area
A 2 2, A A A
mm (R 20 Series) in. mm in. kcmil cmil
0.0200 0.00079 0.000314 0.000000487 0.620
0.0180 0.00071 0.000254 0.000000394 0.502
0.0160 0.00063 0.000201 0.000000312 0.397
0.0140 0.00055 0.000154 0.000000239 0.304
0.0125 0.00049 0.000123 0.000000190 0.242
0.0112 0.00044
...

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: B682 − 01 (Reapproved 2009) B682 − 01 (Reapproved 2009)
Standard Specification for
Standard Metric Sizes of Electrical Conductors
This standard is issued under the fixed designation B682; 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.
ε NOTE— Editorial changes were made in Tables 1 and 2 in November 2015.
1. Scope
1.1 This specification covers and prescribes the recommended standard metric sizes of solid round electrical conductors.
1.2 This specification prescribes the recommended standard metric size designations of stranded electrical conductors (see
Explanatory Note 1).
NOTE 1—Physical properties, construction requirements, and manufacturing tolerances for specific products should be included in individual product
specifications developed in accordance with appropriate sizes in this specification.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3.1 Exceptions — For conductor sizes designated by AWG or kcmil, the requirements in SI units have been numerically
converted from corresponding values, stated or derived, in inch-pound units. For conductor sizes designated by SI units only, the
requirements are stated or derived in SI units. Rounded values appear in Table 1.
2. Referenced Documents
2.1 ASTM Standards:
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
F205 Test Method for Measuring Diameter of Fine Wire by Weighing
2.2 IEC Standards:
IEC 182 Basic Dimensions of Winding Wires
IEC 228 Nominal Cross-Sectional Areas and Composition of Conductors of Insulated Cables
2.3 ISO Standards:
ISO R388 Metric Series for Basic Thickness of Sheet and Diameters of Wire
3. Standard Reference Temperature
3.1 For the purpose of this specification, all wire dimensions and properties shall be considered as occurring at the
internationally standardized reference temperature of 20°C.
4. Preferred Numbers
4.1 The diameters in Table 1 and preferred cross-sectional areas in Table 2 are rounded preferred numbers from R (Renard)
series in accordance with ISO R388.
NOTE 2—The use of preferred numbers has many advantages and the values selected do not vary significantly from the calculated numbers of the series
used. The preferred and second preference size designations, using a Renard series of numbers, provides a schedule of interrelated sizes for aluminum
and copper conductors.
NOTE 3—Should sizes be needed either larger or smaller than those listed in Table 1 or Table 2, the respective R series may be expanded upward or
downward.
This specification is under the jurisdiction of ASTM Committee B01 on Electrical Conductorsand is the direct responsibility of Subcommittee B01.02 on Methods of
Test and Sampling Procedure.
Current edition approved April 1, 2009. Published May 2009. Originally approved in 1981. Last previous edition approved in 2001 as B682 – 01. DOI:
10.1520/B0682-01R09.10.1520/B0682-01R09E01.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’sstandard’s Document Summary page on the ASTM website.
International Electrotechnical Commission and International Organization for Standardization documents are available from the American National Standards Institute
(ANSI), 11 West 42nd St., 13th Floor, New York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
´1
B682 − 01 (2009)
TABLE 1 Standard Metric Diameters and Cross-Sectional Areas of Solid Round Wires at 20°C
Diameter Cross-Sectional Area
A 2 2A A
mm (R 20 Series) in. mm in. kcmil
18.0 0.708 7 254.5 0.394 4 502.2
16.0 0.629 9 201.1 0.311 6 396.8
14.0 0.551 8 153.9 0.238 6 303.8
12.5 0.492 1 122.7 0.190 2 242.2
11.2 0.440 9 98.52 0.152 7 194.4
10.0 0.393 7 78.54 0.121 7 155.0
9.00 0.354 3 63.62 0.098 61 125.6
8.00 0.315 0 50.27 0.077 91 99.2
7.10 0.279 5 39.59 0.061 37 78.14
6.30 0.248 0 31.17 0.048 32 61.52
5.60 0.220 5 24.63 0.038 18 48.61
5.00 0.196 9 19.63 0.030 43 38.75
4.50 0.177 2 15.90 0.024 65 31.39
4.00 0.157 5 12.57 0.019 48 24.80
3.55 0.139 8 9.898 0.015 34 19.53
3.15 0.124 0 7.793 0.012 08 15.38
2.80 0.110 2 6.158 0.009 54 12.15
2.50 0.098 4 4.909 0.007 61 9.69
2.24 0.088 2 3.941 0.006 11 7.78
2.00 0.078 7 3.142 0.004 87 6.20
1.80 0.070 9 2.545 0.003 94 5.02
1.60 0.063 0 2.011 0.003 12 3.97
1.40 0.055 1 1.539 0.002 39 3.04
1.25 0.049 2 1.227 0.001 90 2.42
1.12 0.044 1 0.985 0.001 53 1.94
1.00 0.039 4 0.785 0.001 22 1.55
0.900 0.035 4 0.636 0.000 986 1.26
0.800 0.031 5 0.503 0.000 779 0.992
0.710 0.028 0 0.396 0.000 614 0.781
0.630 0.024 8 0.312 0.000 483 0.615
0.560 0.022 0 0.246 0.000 382 0.486
0.500 0.019 7 0.196 0.000 304 0.388
0.450 0.017 7 0.159 0.000 247 0.314
0.400 0.015 7 0.126 0.000 195 0.248
0.355 0.014 0 0.099 0 0.000 153 0.195
A
cmil
0.315 0.012 4 0.077 9 0.000 121 154
0.280 0.001 0 0.061 6 0.000 095 4 122
0.250 0.009 8 0.049 1 0.000 076 1 96.9
0.224 0.008 8 0.039 4 0.000 061 1 77.8
0.200 0.007 9 0.031 4 0.000 048 7 62.0
0.180 0.007 1 0.025 4 0.000 039 4 50.2
0.160 0.006 3 0.020 1 0.000 031 2 39.7
0.140 0.005 5 0.015 4 0.000 023 9 30.4
0.125 0.004 9 0.012 3 0.000 019 0 24.2
0.112 0.004 4 0.009 85 0.000 015 3 19.4
0.100 0.003 9 0.007 85 0.000 012 2 15.5
0.090 0.003 5 0.006 36 0.000 009 86 12.6
0.080 0.003 1 0.005 03 0.000 007 79 9.92
0.071 0.002 8 0.003 96 0.000 006 14 7.81
0.063 0.002 5 0.003 12 0.000 004 83 6.15
0.056 0.002 2 0.002 46 0.000 003 82 4.86
0.050 0.002 0 0.001 96 0.000 003 04 3.88
0.045 0.001 77 0.001 59 0.000 002 47 3.14
0.040 0.001 57 0.001 26 0.000 001 95 2.48
0.036 0.001 42 0.001 02 0.000 001 58 2.01
0.032 0.001 26 0.000 804 0.000 001 25 1.59
0.028 0.001 10 0.000 616 0.000 000 954 1.22
0.025 0.000 98 0.000 491 0.000 000 761 0.969
0.022 0.000 88 0.000 394 0.000 000 611 0.778
´1
B682 − 01 (2009)
TABLE 1 Continued
Diameter Cross-Sectional Area
A 2 2A A
mm (R 20 Series) in. mm in. kcmil
0.020 0 0.000 79 0.000 314 0.000 000 487 0.620
0.018 0 0.000 71 0.000 254 0.000 000 394 0.502
0.016 0 0.000 63 0.000 201 0.000 000 312 0.397
0.014 0 0.000 55 0.000 154 0.000 000 239 0.304
0.012 5 0.000 49 0.000 123 0.000 000 190 0.242
0.011 2 0.000 44 0.000 099 0.000 000 153 0.194
0.010 0 0.000 39 0.000 079 0.000 000 122 0.155
TABLE 1 Standard Metric Diameters and Cross-Sectional Areas of Solid Round Wires at 20°C
Diameter Cross-Sectional Area
A 2 2, A A A
mm (R 20 Series) in. mm in. kcmil cmil
18.0 0.7087 254.5 0.3944 502.2
16.0 0.6299 201.1 0.3116 396.8
14.0 0.5518 153.9 0.2386 303.8
12.5 0.4921 122.7 0.1902 242.2
11.2 0.4409 98.52 0.1527 194.4
10.0 0.3937 78.54 0.1217 155.0
9.00 0.3543 63.62 0.09861 125.6
8.00 0.3150 50.27 0.07791 99.2
7.10 0.2795 39.59 0.06137 78.14
6.30 0.2480 31.17 0.04832 61.52
5.60 0.2205 24.63 0.03818 48.61
5.00 0.1969 19.63 0.03043 38.75
4.50 0.1772 15.90 0.02465 31.39
4.00 0.1575 12.57 0.01948 24.80
3.55 0.1398 9.898 0.01534 19.53
3.15 0.1240 7.793 0.01208 15.38
2.80 0.1102 6.158 0.00954 12.15
2.50 0.0984 4.909 0.00761 9.69
2.24 0.0882 3.941 0.00611 7.78
2.00 0.0787 3.142 0.00487 6.20
1.80 0.0709 2.545 0.00394 5.02
1.60 0.0630 2.011 0.00312 3.97
1.40 0.0551 1.539 0.00239 3.04
1.25 0.0492 1.227 0.00190 2.42
1.12 0.0441 0.985 0.00153 1.94
1.00 0.0394 0.785 0.00122 1.55
0.900 0.0354 0.636 0.000986 1.26
0.800 0.0315 0.503 0.000779 0.992
0.710 0.0280 0.396 0.000614 0.781
0.630 0.0248 0.312 0.000483 0.615
0.560 0.0220 0.246 0.000382 0.486
0.500 0.0197 0.196 0.000304 0.388
0.450 0.0177 0.159 0.000247 0.314
0.400 0.0157 0.126 0.000195 0.248
0.355 0.0140 0.0990 0.000153 0.195
0.315 0.0124 0.0779 0.000121 154
0.280 0.0010 0.0616 0.0000954 122
0.250 0.0098 0.0491 0.0000761 96.9
0.224 0.0088 0.0394 0.0000611 77.8
0.200 0.0079 0.0314 0.0000487 62.0
0.180 0.0071 0.0254 0.0000394 50.2
0.160 0.0063 0.0201 0.0000312 39.7
0.140 0.0055 0.0154 0.0000239 30.4
0.125 0.0049 0.0123 0.0000190 24.2
0.112 0.0044 0.00985 0.0000153 19.4
0.100 0.0039 0.00785 0.0000122 15.5
0.090 0.0035 0.00636 0.00000986 12.6
´1
B682 − 01 (2009)
TABLE 1 Continued
Diameter Cross-Sectional Area
A 2 2, A A A
mm (R 20 Series) in. mm in. kcmil cmil
0.080 0.
...