ASTM B193-20 - 1.11.2020
 
1. Scope

1.1?This test method covers the determination of the electrical resistivity of metallic electrical conductor material. It provides for an accuracy of ?0.30 % on test specimens having a resistance of 0.00001 ? (10 ??) or more. Weight resistivity accuracy may be adversely affected by possible inaccuracies in the assumed density of the conductor.

1.2?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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.3?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

 
2. Referenced Documents

B958-08

Standard Specification for Extra-High-Strength and Ultra-High-Strength Class A Zinc–5% Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Use in Overhead Electrical Conductors

B957-08

Standard Specification for Extra-High-Strength and Ultra-High-Strength Zinc-Coated (Galvanized) Steel Core Wire for Overhead Electrical Conductors

B803-08

Standard Specification for High-Strength Zinc-5% Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Use in Overhead Electrical Conductors

B802

Specification for Zinc-5% Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Aluminum Conductors, Steel Reinforced (ACSR)[Metric](Discontinued 1998-Replaced by B 802/B802M) B0802_B0802M

B800-05(2021)

Standard Specification for 8000 Series Aluminum Alloy Wire for Electrical Purposes—Annealed and Intermediate Tempers

B606-08

Standard Specification for High-Strength Zinc-Coated (Galvanized) Steel Core Wire for Aluminum and Aluminum-Alloy Conductors, Steel Reinforced

B566-04a(2025)

Standard Specification for Copper-Clad Aluminum Wire (Includes all amendments and changes 5/23/2025).

B498/B498M-22

Standard Specification for Zinc-Coated (Galvanized) Steel Core Wire for Use in Overhead Electrical Conductors

B415-16(2025)

Standard Specification for Hard-Drawn Aluminum-Clad Steel Wire

A111-99a(2026)

Standard Specification for Zinc-Coated (Galvanized) “Iron” Telephone and Telegraph Line Wire (Includes all amendments and changes 4/22/2026).

A326-67

Specification for Zinc-Coated (Galvanized) High Tensile Steel Telephone and Telegraph Line Wire (Withdrawn 1990)

B9-25

Standard Specification for Bronze Trolley Wire

B105-05

Standard Specification for Hard-Drawn Copper Alloy Wires for Electric Conductors

B298-12(2024)

Standard Specification for Silver-Coated Soft or Annealed Copper Wire

B355-11(2024)

Standard Specification for Nickel-Coated Soft or Annealed Copper Wire

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.