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ASTM B193-20

(Test Method)

Standard Test Method for Resistivity of Electrical Conductor Materials

Standard Test Method for Resistivity of Electrical Conductor Materials

ABSTRACT
This test method covers the determination of the electrical resistivity of metallic electrical conductor material. Weight resistivity accuracy may be adversely affected by possible inaccuracies in the assumed density of the conductor. The definition of resistivity and the equations for calculating volume resistivity and weight resistivity are given. Resistance shall be measured using an apparatus with a circuit configuration and instrumentation that has a resistance measurement capability of the prescribed accuracy. The test specimen requirements and the test procedure including: (1) determination of dimensions (such as length and cross-section), weight, and density, and (2) resistance measurement are detailed. The formula for calculating the corrected resistance, when the measurement is made at any temperature other than a reference temperature, is given. No statement of precision has been made and no work has been planned to develop such a statement. This test method has no bias because the value for resistivity is determined solely in terms of this test method.
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 Ω (10 μΩ) 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.

General Information

Status
Published
Publication Date
31-Oct-2020
ICS
29.050 - Superconductivity and conducting materials
Technical Committee
B01 - Electrical Conductors
Drafting Committee
B01.02 - Methods of Test and Sampling Procedure
Current Stage
Ref Project

Relations

Refers
ASTM B33-10(2020)e1 - Standard Specification for Tin-Coated Soft or Annealed Copper Wire for Electrical Purposes
Effective Date
01-Jan-2020

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Standards Content (Sample)

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.
Designation: B193 − 20
Standard Test Method for
1
Resistivity of Electrical Conductor Materials
This standard is issued under the fixed designation B193; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope Wire for Electrical Purposes
B47 Specification for Copper Trolley Wire
1.1 This test method covers the determination of the elec-
B105 Specification for Hard-Drawn CopperAlloy Wires for
trical resistivity of metallic electrical conductor material. It
Electric Conductors
provides for an accuracy of 60.30 % on test specimens having
B227 Specification for Hard-Drawn Copper-Clad Steel Wire
a resistance of 0.00001 Ω (10 µΩ) or more. Weight resistivity
B230 Specification forAluminum 1350–H19 Wire for Elec-
accuracy may be adversely affected by possible inaccuracies in
trical Purposes
the assumed density of the conductor.
B298 Specification for Silver-Coated Soft orAnnealed Cop-
1.2 This standard does not purport to address all of the
per Wire
safety concerns, if any, associated with its use. It is the
B355 SpecificationforNickel-CoatedSoftorAnnealedCop-
responsibility of the user of this standard to establish appro-
per Wire
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use. B396 Specification forAluminum-Alloy 5005-H19 Wire for
3
1.3 This international standard was developed in accor- Electrical Purposes (Withdrawn 2003)
dance with internationally recognized principles on standard-
B398 Specification for Aluminum-Alloy 6201-T81 Wire for
ization established in the Decision on Principles for the
Electrical Purposes [Metric](Discontinued 1999-Replaced
Development of International Standards, Guides and Recom-
by B 398/B398M) B0398_B0398M
mendations issued by the World Trade Organization Technical
B415 Specification for Hard-Drawn Aluminum-Clad Steel
Barriers to Trade (TBT) Committee.
Wire
B498/B498M Specification for Zinc-Coated (Galvanized)
2. Referenced Documents
Steel Core Wire for Use in Overhead Electrical Conduc-
2
2.1 ASTM Standards:
tors
A111 Specification for Zinc-Coated (Galvanized) “Iron”
B502 Specification for Aluminum-Clad Steel Core Wire for
Telephone and Telegraph Line Wire
Use in Overhead Electrical Aluminum Conductors
A326 Specification for Zinc-Coated (Galvanized) High Ten-
B566 Specification for Copper-Clad Aluminum Wire
sile Steel Telephone and Telegraph Line Wire (Withdrawn
B606 Specification for High-Strength Zinc-Coated (Galva-
3
1990)
nized) Steel Core Wire for Aluminum and Aluminum-
B1 Specification for Hard-Drawn Copper Wire
Alloy Conductors, Steel Reinforced
B2 Specification for Medium-Hard-Drawn Copper Wire
B609 Specification for Aluminum 1350 Round Wire, An-
B3 Specification for Soft or Annealed Copper Wire
nealed and Intermediate Tempers, for Electrical Purposes
B9 Specification for Bronze Trolley Wire
B800 Specification for 8000 Series Aluminum Alloy Wire
B33 Specification for Tin-Coated Soft or Annealed Copper
for Electrical Purposes—Annealed and Intermediate Tem-
pers
1
This test method is under the jurisdiction of ASTM Committee B01 on
B802 Specification for Zinc-5% Aluminum-Mischmetal
Electrical Conductors and is the direct responsibility of Subcommittee B01.02 on
Alloy-Coated Steel Core Wire forAluminum Conductors,
Methods of Test and Sampling Procedure.
Current edition approved Nov. 1, 2020. Published November 2020. Originally Steel Reinforced (ACSR)[Metric](Discontinued 1998-
approved in 1944. Last previous edition approved in 2019 as B193 – 19. DOI:
Replaced by B 802/B802M) B0802_B0802M
10.1520/B0193-20.
B803 Specification for High-Strength Zinc–5 % Aluminum-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Mischmetal Alloy-Coated Steel Core Wire for Use in
Standards volume information, refer to the standard’s Document Summary page on
Overhead Electrical Conductors
the ASTM website.
3 B941 Specification for Heat ResistantAluminum-Zirconium
The last approved version of this historical standard is referenced on
www.astm.org. Alloy Wire for Electrical Purposes
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
B193 − 20
B957 Specification for Extra-High-Stre
...

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.
Designation: B193 − 19 B193 − 20
Standard Test Method for
1
Resistivity of Electrical Conductor Materials
This standard is issued under the fixed designation B193; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
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 60.30 % on test specimens having a resistance of 0.00001 Ω (10 μΩ) 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
2
2.1 ASTM Standards:
A111 Specification for Zinc-Coated (Galvanized) “Iron” Telephone and Telegraph Line Wire
3
A326 Specification for Zinc-Coated (Galvanized) High Tensile Steel Telephone and Telegraph Line Wire (Withdrawn 1990)
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
B227 Specification for Hard-Drawn Copper-Clad Steel Wire
B230 Specification for Aluminum 1350–H19 Wire for Electrical Purposes
B298 Specification for Silver-Coated Soft or Annealed Copper Wire
B355 Specification for Nickel-Coated Soft or Annealed Copper Wire
3
B396 Specification for Aluminum-Alloy 5005-H19 Wire for Electrical Purposes (Withdrawn 2003)
B398 Specification for Aluminum-Alloy 6201-T81 Wire for Electrical Purposes [Metric](Discontinued 1999-Replaced by B
398/B398M) B0398_B0398M
1
This test method is under the jurisdiction of ASTM Committee B01 on Electrical Conductors and is the direct responsibility of Subcommittee B01.02 on Methods of
Test and Sampling Procedure.
Current edition approved Oct. 1, 2019Nov. 1, 2020. Published October 2019November 2020. Originally approved in 1944. Last previous edition approved in 20162019
as B193 – 16.B193 – 19. DOI: 10.1520/B0193-19.10.1520/B0193-20.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
The last approved version of this historical standard is referenced on www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
B193 − 20
B415 Specification for Hard-Drawn Aluminum-Clad Steel Wire
B498/B498M Specification for Zinc-Coated (Galvanized) Steel Core Wire for Use in Overhead Electrical Conductors
B502 Specification for Aluminum-Clad Steel Core Wire for Use in Overhead Electrical Aluminum Conductors
B566 Specification for Copper-Clad Aluminum Wire
B606 Specification for High-Strength Zinc-Coated (Galvanized) Steel Core Wire for Aluminum and Aluminum-Alloy
Conductors, Steel Reinforced
B609 Specification for Aluminum 1350 Round Wire, Annealed and Intermediate Tempers, for Electrical Purposes
B800 Specification for 8000 Series Aluminum Alloy Wire for Electrical Purposes—Annealed and Intermediate Tempers
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
B803 Specification for High-Strength Zinc–5 % Aluminum-Mischmetal Alloy-Coated Steel Core Wire fo
...

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SCOPE
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Sections  
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Hardness  
16  
Brinell  
17  
Rockwell  
18  
Portable  
19  
Impact  
20 to 30  
Keywords  
32  
1.3 Annexes covering details peculiar to certain products are appended to these test methods as follows:    
Annex  
Bar Products  
Annex A1  
Tubular Products  
Annex A2  
Fasteners  
Annex A3  
Round Wire Products  
Annex A4  
Significance of Notched-Bar Impact Testing  
Annex A5  
Converting Percentage Elongation of Round Specimens to
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Annex A6    
Testing Multi-Wire Strand  
Annex A7  
Rounding of Test Data  
Annex A8  
Methods for Testing Steel Reinforcing Bars  
Annex A9  
Procedure for Use and Control of Heat-cycle Simulation  
Annex A10  
1.4 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.  
1.5 When these test methods are referenced in a metric product specification, the yield and tensile values may be determined in inch-pound (ksi) units then converted into SI (MPa) units. The elongation determined in inch-pound gauge lengths of 2 in. or 8 in. may be report...

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ASTM
ASTM F3565-23(Practice)
Standard Practice for Electrofusion Joining Polyethylene (PE) Pipe and Fittings for Pressure Pipe Service

SIGNIFICANCE AND USE
4.1 Using the procedures and apparatus in Sections 8 and 9 and the manufacturer's instructions, pressure-tight joints as strong as the pipe itself can be made between manufacturer-recommended combinations of pipe and fittings. See Specification F1055 for performance requirements of polyethylene electrofusion fittings.
SCOPE
1.1 This practice describes procedures for making joints suitable for pressure service with polyethylene (PE) pipe and fittings by means of electrofusion joining techniques in, but not limited to, a field environment. Other suitable electrofusion joining procedures are available from various sources including fitting manufacturers. This standard does not purport to address all possible electrofusion joining procedures, or to preclude the use of qualified procedures developed by other parties that have been proven to produce reliable electrofusion joints. (Note 1)
Note 1: Reference to the manufacturer in this practice refers to the electrofusion fitting manufacturer.  
1.2 The parameters and procedure are applicable only to joining polyethylene pipe and fittings (Note 2) which are intended for PE fuel gas pipe per Specification D2513 and PE potable water, sewer and industrial pipe manufactured per Specification F714, Specification D3035, Specification F2619, and AWWA C901 and C906.
Note 2: Commercially available materials classified with a thermoplastic pipe material designation code beginning with PE 14, PE 23, PE 24, PE 27, PE 33, PE 34, PE 36, and PE 46, and PE 47 in accordance with Specification D3350 and Terminology F412 are generally acceptable for electrofusion joining using this practice. Consult with the pipe or fitting manufacturer for specific compatibility information.  
1.3 Parts that are within the dimensional tolerances given in present ASTM specifications are required to produce sound joints between polyethylene pipe and fittings when using the joining techniques described in this practice.  
1.4 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.  
1.5 The text of this practice references notes, footnotes, and appendices which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the practice.  
1.6 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.  
1.7 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.

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