ASTM B258-01

Standard Specification for Standard Nominal Diameters and Cross-Sectional Areas of AWG Sizes of Solid Round Wires Used as Electrical Conductors

SCOPE
1.1 This specification prescribes standard nominal diameters and cross-sectional areas of American Wire Gage (AWG) sizes of solid round wires, used as electrical conductors, and gives equations and rules for the calculation of standard nominal mass and lengths, resistances, and breaking strengths of such wires (Explanatory Note 1).
1.2 The values stated in inch-pound or SI units are to be regarded separately as standard. Each system shall be used independently of the other. Combining values of the two systems may result in nonconformance with the specification. For conductor sizes designated by AWG or kcmil sizes, the requirements in SI units have been numerically converted from the 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.
1.2.1 For density, resistivity and temperature, the values stated in SI units are to be regarded as standard.

General Information

• Status: Historical
• Publication Date: 09-Apr-2002
• ICS: 29.060.10 - Wires
• Technical Committee: B01 - Electrical Conductors
• Drafting Committee: B01.02 - Methods of Test and Sampling Procedure

Relations

• Replaces: ASTM B258-96 - Standard Specification for Standard Nominal Diameters and Cross-Sectional Areas of AWG Sizes of Solid Round Wires Used as Electrical Conductors
• Effective Date: 10-Apr-2002
• Replaced By: ASTM B258-02 - Standard Specification for Standard Nominal Diameters and Cross-Sectional Areas of AWG Sizes of Solid Round Wires Used as Electrical Conductors
• Effective Date: 10-Apr-2002
• Referred By: ASTM B520-12(2017) - Standard Specification for Tin-Coated, Copper-Clad Steel Wire for Electronic Application
• Effective Date: 10-Apr-2002
• Referred By: ASTM B355-11(2016) - Standard Specification for Nickel-Coated Soft or Annealed Copper Wire
• Effective Date: 10-Apr-2002
• Referred By: ASTM B566-04a(2021) - Standard Specification for Copper-Clad Aluminum Wire
• Effective Date: 10-Apr-2002
• Referred By: ASTM B910/B910M-07(2018) - Standard Specification for Annealed Copper-Clad Steel Wire
• Effective Date: 10-Apr-2002
• Referred By: ASTM B961-13(2019) - Standard Specification for Silver Coated Copper and Copper Alloy Stranded Conductors for Electronic Space Application
• Effective Date: 10-Apr-2002
• Referred By: ASTM B913-21 - Standard Test Method for Evaluation of Crimped Electrical Connections to 16-Gauge and Smaller Diameter Stranded and Solid Conductors
• Effective Date: 10-Apr-2002
• Referred By: ASTM B1001-17 - Standard Specification for Copper Electrode Wire Used for Welding Seams of Steel Cans
• Effective Date: 10-Apr-2002
• Referred By: ASTM B869-07(2018) - Standard Specification for Copper-Clad Steel Electrical Conductor for CATV Drop Wire
• Effective Date: 10-Apr-2002
• Referred By: ASTM B227-15(2019) - Standard Specification for Hard-Drawn Copper-Clad Steel Wire
• Effective Date: 10-Apr-2002
• Referred By: ASTM B189-05(2021) - Standard Specification for Lead-Coated and Lead-Alloy-Coated Soft Copper Wire for Electrical Purposes
• Effective Date: 10-Apr-2002
• Referred By: ASTM B501-10(2019) - Standard Specification for Silver-Coated, Copper-Clad Steel Wire for Electronic Application
• Effective Date: 10-Apr-2002
• Referred By: ASTM B452-22 - Standard Specification for Copper-Clad Steel Wire for Electronic Application
• Effective Date: 10-Apr-2002
• Referred By: ASTM B965-09(2018) - Standard Specification for High Performance Tin-Coated Annealed Copper Wire Intended for Electrical and Electronic Application for Solderability
• Effective Date: 10-Apr-2002

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: B 258 – 01
Standard Specification for
Standard Nominal Diameters and Cross-Sectional Areas of
AWG Sizes of Solid Round Wires Used as Electrical
1
Conductors
This standard is issued under the fixed designation B 258; 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 (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
4
1. Scope for Electrical Conductors
B 189 Specification for Lead-Coated and Lead-Alloy-
1.1 This specification prescribes standard nominal diam-
4
Coated Soft Copper Wire for Electrical Purposes
eters and cross-sectional areas of American Wire Gage (AWG)
B 227 Specification for Hard-Drawn Copper-Clad Steel
sizes of solid round wires, used as electrical conductors, and
4
Wire
gives equations and rules for the calculation of standard
B 230/B 230M Specification for Aluminum 1350-H19 Wire
nominal mass and lengths, resistances, and breaking strengths
4
for Electrical Purposes
of such wires (Explanatory Note 1).
B 314 Specification for Aluminum 1350 Wire for Commu-
1.2 The values stated in inch-pound or SI units are to be
5
nication Cable
regarded separately as standard. Each system shall be used
B 396 Specification for Aluminum-Alloy 5005-H19 Wire
independently of the other. Combining values of the two
4
for Electrical Purposes
systems may result in nonconformance with the specification.
B 398/B 398M Specification for Aluminum-Alloy 6201-
For conductor sizes designated by AWG or kcmil sizes, the
4
T81 Wire for Electrical Purposes
requirements in SI units have been numerically converted from
B 415 Specification for Hard-Drawn Aluminum-Clad Steel
the corresponding values stated or derived, in inch-pound units.
4
Wire
For conductor sizes designated by SI units only, the require-
B 609/B 609M Specification for Aluminum 1350 Round
ments are stated or derived in SI units.
Wire, Annealed and Intermediate Tempers, for Electrical
1.2.1 For density, resistivity and temperature, the values
4
Purposes
stated in SI units are to be regarded as standard.
B 800 Specification for 8000 Series Aluminum Alloy Wire
2. Referenced Documents
for Electrical Purposes—Annealed and Intermediate Tem-
4
pers
2.1 ASTM Standards:
E 29 Practice for Using Significant Digits in Test Data to
A 111 Specification for Zinc-Coated (Galvanized) “Iron”
6
2
Determine Conformance with Specifications
Telephone and Telegraph Line Wire
F 205 Test Method for Measuring Diameter of Fine Wire by
A 326 Specification for Zinc-Coated (Galvanized) High
7
3
Weighing
Tensile Steel Telephone and Telegraph Line Wire
4
B 1 Specification for Hard-Drawn Copper Wire
3. Standard Reference Temperature
4
B 2 Specification for Medium-Hard-Drawn Copper Wire
4
3.1 For the purpose of this specification, all wire dimensions
B 3 Specification for Soft or Annealed Copper Wire
4 and properties shall be considered as occurring at the interna-
B 9 Specification for Bronze Trolley Wire
tionally standardized reference temperature of 20°C (68°F).
B 33 Specification for Tinned Soft or Annealed Copper
4
Wire for Electrical Purposes
4. Standard Rules for Rounding
4
B 47 Specification for Copper Trolley Wire
4.1 All calculations for the standard nominal dimensions
B 105 Specification for Hard-Drawn Copper Alloy Wires
and properties of solid round wires shall be rounded in the final
value only, in accordance with rounding method of Practice
1
This specification is under the jurisdiction of ASTM Committee B01 on
E 29.
Electrical Conductors and is the direct responsibility of Subcommittee B01.02 on
Methods of Test and Sampling Procedure.
Current edition approved Nov. 10, 2001. Published January 2002. Originally
published as B 258 – 51 T. Last previous edition B 258 – 96.
2 5
Annual Book of ASTM Standards, Vol 01.06. Discontinued, see 1994 Annual Book of ASTM Standards, Vol 02.03.
3 6
Discontinued, see 1990 Annual Book of ASTM Standards, Vol 01.06. Annual Book of ASTM Standards, Vol 14.02.
4 7
Annual Book of ASTM Standards, Vol 02.03. Annual Book of ASTM Standards, Vol 10.04.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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B 258
5. Standard Nominal Diameters Standard nominal cross-sectional areas in circular mils and
square inches have been calculated in accordance with the
5.1 Standard nominal diameters of AWG sizes of solid
foregoing rules and are given in Table 1 for convenient
round wires shall be calculated in accordance with the conven-
reference.
tional mathematical law of the American Wire Gage (see
Explanatory Note 1) and
...