ASTM B3-12

ASTM B3-12 - 15.11.2012

1. Scope

1.1 This specification covers drawn and annealed or soft round bare 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.

2. Referenced Documents

B49-20	Standard Specification for Copper Rod for Electrical Purposes
B193-25	Standard Test Method for Resistivity of Electrical Conductor Materials
B258-18(2026)	Standard Specification for Standard Nominal Diameters and Cross-Sectional Areas of AWG Sizes of Solid Round Wires Used as Electrical Conductors
NBS Handbook 100	Copper Wire Tables Available from National Institute of Standards and Technology (NIST), 100 Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070, http://www.nist.gov.