ASTM B986-13e1

Standard Test Method for Determination of Tensile Strength by Mass Method for Stranded Conductors Intended for use in Electronic Application

SIGNIFICANCE AND USE
4.1 This test method is designed as an inspection or acceptance test of tensile strength for stranded metallic conductors.
SCOPE
1.1 This test method covers the procedure for determining the tensile strength by a mass method for uninsulated stranded electrical conductors intended for use in electronic application (Explanatory Note 1).  
1.1.1 The test method is intended for conductors that are one type of wire (non-composite). The wire type being plain, clad, or coated and stranded together to operate mechanically and electrically as a single conductor.  
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.  
1.3 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 and health practices and determine the applicability of regulatory limitations prior to use. Some specific hazards statements are given in Section 7 on Hazards.

General Information

• Status: Historical
• Publication Date: 31-Mar-2013
• ICS: 33.120.20 - Wires and symmetrical cables
• Technical Committee: B01 - Electrical Conductors
• Drafting Committee: B01.02 - Methods of Test and Sampling Procedure

Relations

• Replaces: ASTM B986-13 - Standard Test Method for Determination of Tensile Strength by Mass Method for Stranded Conductors Intended for use in Electronic Application
• Effective Date: 01-Apr-2013
• Replaced By: ASTM B986-13(2019) - Standard Test Method for Determination of Tensile Strength by Mass Method for Stranded Conductors Intended for use in Electronic Application
• Effective Date: 01-Oct-2019

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
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Designation: B986 − 13
Standard Test Method for
Determination of Tensile Strength by Mass Method for
Stranded Conductors Intended for use in Electronic
1
Application
This standard is issued under the fixed designation B986; 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 Department of Defense.
1
ε NOTE—The units for CM in Section 7.1 were editorially corrected in August 2013.
1. Scope E8/E8M Test Methods for Tension Testing of Metallic Ma-
terials
1.1 This test method covers the procedure for determining
the tensile strength by a mass method for uninsulated stranded
3. Terminology
electrical conductors intended for use in electronic application
3.1 Definitions:
(Explanatory Note 1).
3.1.1 For definitions of terms used in this test method, refer
1.1.1 Thetestmethodisintendedforconductorsthatareone
to Terminology B354.
type of wire (non-composite). The wire type being plain, clad,
or coated and stranded together to operate mechanically and
4. Significance and Use
electrically as a single conductor.
4.1 This test method is designed as an inspection or accep-
1.2 The values stated in inch-pound units are to be regarded
tance test of tensile strength for stranded metallic conductors.
as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only
5. Apparatus
and are not considered standard.
5.1 Tensile Testing Machine—Machines used for tension
1.3 This standard does not purport to address all of the
testing shall conform to the requirements of Practices E4.
safety concerns, if any, associated with its use. It is the
5.2 Balance, for measurement of mass, accurate to 0.1 %.
responsibility of the user of this standard to establish appro-
5.3 Steel Scale, for measurement of length, with smaller
priate safety and health practices and determine the applica-
1
divisions, not greater than ⁄32 in. (1 mm).
bility of regulatory limitations prior to use. Some specific
hazards statements are given in Section 7 on Hazards.
5.4 Jig, or equivalent equipment, for cutting the conductor
to length and at right angles to its axis.
2. Referenced Documents
2 6. Procedure
2.1 ASTM Standards:
B354 Terminology Relating to Uninsulated Metallic Electri- 6.1 Breaking Load:
cal Conductors 6.1.1 Conduct tensile test in accordance with Test Methods
B800 Specification for 8000 Series Aluminum Alloy Wire E8/E8M and with a rate of loading not to exceed 10 in./min
for Electrical Purposes—Annealed and Intermediate Tem- (250 mm/min.) (Explanatory Note 2 and Note 3).
pers
6.2 Specimen Mass/Unit Length:
E4 Practices for Force Verification of Testing Machines
6.2.1 Cut the test specimens, making sure that the ends are
at right angles to the axis of the conductor. The length of test
specimens shall be 2 ft (610 mm) minimum (Explanatory Note
1
This practice is under the jurisdiction of ASTM Committee B01 on Electrical
2).
Conductors and is the direct responsibility of Subcommittee B01.02 on Methods of
6.2.2 Measure the length of the specimen at room tempera-
Test and Sampling Procedure.
1
Current edition approved April 1, 2013. Published April 2013. DOI: 10.1520/ ture (see Note 1) to the nearest ⁄32 in. (1 mm) and measure the
B0986-13E01.
mass to within 60.1 % accuracy, converting to lb/1000 ft or
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
kg/km, if weighed in other units.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
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B986 − 13
NOTE 1—Correction for temperature variation need not be made, since
8. Precision and Bias
the error introduced in the length measurement by the temperature
variation is less than the required accuracy of the length measurement. 8.1 Precision and Bias—The precision and bias of this test
method for tensile strength are essentially as specified in Test
7. Calculation
Methods E8/E8M.
7.1 Calculate the tensile strength of the stranded conductor
as follows (Explanatory Note 1):
9. Keywords
TS 5 ~BL⁄ CM! 3 MF 3 @~100 1 k! ⁄ 100#
9.1 breaking loads; mass methods; metallic conductors;
where: tensile strength
2
TS = tensile strength of the stranded conductor, lb/in.
2
(N/mm ),
BL = breaking load measurement read directly from the
tensile tester, lb (N),
CM = mass of conductor per unit le
...