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This specification prescribes the 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 or rated strengths of such wires. All wire dimensions and properties shall be considered as occurring at the internationally standardized reference temperature and all calculations shall be rounded in the final value only.
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.
1.1 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
A111 Specification for Zinc-Coated (Galvanized) Iron Telephone and Telegraph Line Wire
A326 Specification for Zinc-Coated (Galvanized) High Tensile Steel Telephone and Telegraph Line Wire
B1 Specification for Hard-Drawn Copper Wire
B2 Specification for Medium-Hard-Drawn Copper Wire
B3 Specification for Soft or Annealed Copper Wire
B9 Specification for Bronze Trolley Wire
B33 Specification for Tin-Coated Soft or Annealed Copper Wire for Electrical Purposes
B47 Specification for Copper Trolley Wire
B105 Specification for Hard-Drawn Copper Alloy Wires for Electric Conductors
B189 Specification for Lead-Coated and Lead-Alloy-Coated Soft Copper Wire for Electrical Purposes
B193 Test Method for Resistivity of Electrical Conductor Materials
B227 Specification for Hard-Drawn Copper-Clad Steel Wire
B230/B230M Specification for Aluminum 1350H19 Wire for Electrical Purposes
B314 Specification for Aluminum 1350 Wire for Communication Cable
B396 Specification for Aluminum-Alloy 5005-H19 Wire for Electrical Purposes
B398/B398M Specification for Aluminum-Alloy 6201-T81 and 6201-T83 Wire for Electrical Purposes
B415 Specification for Hard-Drawn Aluminum-Clad Steel Wire
B609/B609M Specification for Aluminum 1350 Round Wire, Annealed and Intermediate Tempers, for Electrical Purposes
B800 Specification for 8000 Series Aluminum Alloy Wire for Electrical PurposesAnnealed and Intermediate Tempers
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
ICS Number Code 29.060.10 (Wires)
UNSPSC Code 26121500(Electrical wire)
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ASTM B258-14, Standard Specification for Standard Nominal Diameters and Cross-Sectional Areas of AWG Sizes of Solid Round Wires Used as Electrical Conductors, ASTM International, West Conshohocken, PA, 2014, www.astm.orgBack to Top