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ASTM B913-05(2010)

(Test Method)

Standard Test Method for Evaluation of Crimped Electrical Connections to 16-Gauge and Smaller Diameter Stranded and Solid Conductors

Standard Test Method for Evaluation of Crimped Electrical Connections to 16-Gauge and Smaller Diameter Stranded and Solid Conductors

SIGNIFICANCE AND USE
This test method establishes the requirements for a standardized method of evaluating the performance of crimped-type electrical connections having solid or stranded conductors.
In order to achieve a successful crimped connection, the crimping tool must deform the material of the crimp barrel or barrel tab(s) around the conductor. As a consequence, the conductor surfaces are placed under compression by the crimp terminal and areas of contact are established between the conductor and the crimp barrel. These areas provide the desired electrical connection. A reliable crimped connection is one that is capable of maintaining the contact between the conductor and crimp barrel so that a stable electrical connection is maintained when it is exposed to the conditions it was designed to endure during its useful life.
Evaluation testing is designed to ensure that a particular design crimped connection system consisting of conductor and component and associated tooling is capable of achieving a reliable electrical and mechanical connection. After the evaluation is completed, if any change in the system parts is made, the system should be reevaluated using the same procedures.
After completion of the evaluation test, the tensile pull strength results may be used to develop acceptance requirements to be used in inspection of subsequent production lots of crimped connections. An example of such an acceptance requirement is shown in Appendix X1.
The aging test, 33 days exposure at 118°C, has been used in the telecommunications industry to simulate 40 years of service at a moderately elevated temperature of 50°C, an environment that components experience within large banks of telephone equipment. This environment is similar to that seen in a wide range of electronic systems operating indoors containing active components that dissipate power. The test is designed to reproduce the stress relaxation of copper alloys in such service and has been used extensively in evaluating w...
SCOPE
1.1 This test method establishes the requirements for a standardized method of evaluating the quality of crimped-type electrical connections to solid or stranded conductors. This test method applies to 16-gauge and smaller diameter copper wire, coated or uncoated.
1.2 This test method is applicable to connection systems intended for indoor use, or for use in environmentally protected enclosures. Additional testing may be required to assure satisfactory performance in applications where high humidity or corrosive environment, or both, may be present.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 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 become familiar with all hazards including those identified in the appropriate Material Safety Data Sheet (MSDS) for this product/material as provided by the manufacturer, to establish appropriate safety and health practices, and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
30-Sep-2010
ICS
29.120.20 - Connecting devices
Technical Committee
B02 - Nonferrous Metals and Alloys
Drafting Committee
B02.11 - Electrical Contact Test Methods
Current Stage
Ref Project

Relations

Replaces
ASTM B913-05 - Standard Test Method for Evaluation of Crimped Electrical Connections to 16-Gauge and Smaller Diameter Stranded and Solid Conductors
Effective Date
01-Oct-2010
Referred By
ASTM B942-21 - Standard Guide for Specification and Quality Assurance for the Electrical Contact Performance of Crimped Wire Terminations
Effective Date
01-Oct-2010

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ASTM B913-05(2010) - Standard Test Method for Evaluation of Crimped Electrical Connections to 16-Gauge and Smaller Diameter Stranded and Solid ConductorsASTM B913-05(2010) - Standard Test Method for Evaluation of Crimped Electrical Connections to 16-Gauge and Smaller Diameter Stranded and Solid Conductors
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ASTM B913-05(2010) - Standard Test Method for Evaluation of Crimped Electrical Connections to 16-Gauge and Smaller Diameter Stranded and Solid Conductors
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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
Designation: B913 − 05(Reapproved 2010)
Standard Test Method for
Evaluation of Crimped Electrical Connections to 16-Gauge
1
and Smaller Diameter Stranded and Solid Conductors
This standard is issued under the fixed designation B913; 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.
1. Scope 3. Terminology
1.1 This test method establishes the requirements for a
3.1 Definitions—Many terms related to electrical contacts
standardized method of evaluating the quality of crimped-type
used in this test method are defined in Terminology B542.
electrical connections to solid or stranded conductors.This test
3.2 Definitions of Terms Specific to This Standard:
method applies to 16-gauge and smaller diameter copper wire,
3.2.1 crimp, v—to establish an electrical and mechanical
coated or uncoated.
attachmentbetweenthetwomembersbymechanicallydeform-
1.2 This test method is applicable to connection systems
ing one contact member around another. In most cases, one
intendedforindooruse,orforuseinenvironmentallyprotected
member is a wire or group of wires, the other is a hollow
enclosures. Additional testing may be required to assure
cylinder or partial cylinder that is deformed around the wires.
satisfactory performance in applications where high humidity
3.2.2 crimp barrel, crimp tab, n—the portion of the crimp
or corrosive environment, or both, may be present.
terminal that is deformed in the crimping operation.
1.3 The values stated in SI units are to be regarded as
3.2.3 crimped connection, n—a mechanical and electrical
standard. No other units of measurement are included in this
connection between a conductor and a component. The con-
standard.
nection is made by compressing (crimping) the component
1.4 This standard does not purport to address all of the
(crimp barrel) or tab(s) of the component about the conductor
safety concerns, if any, associated with its use. It is the
using a tool specifically designed for the purpose
responsibility of the user of this standard to become familiar
with all hazards including those identified in the appropriate
3.2.4 crimp terminal, n—an electrical component designed
Material Safety Data Sheet (MSDS) for this product/material to be electrically and mechanically attached to a wire by
as provided by the manufacturer, to establish appropriate
deforming a portion of the component in a crimping operation
safety and health practices, and determine the applicability of
toformanattachmenttothewire.Theotherendoftheterminal
regulatory limitations prior to use.
usually has a ring, fork, spade, tab, or related configuration
designed to attach to another connection such as a screw or
2. Referenced Documents
terminal block.
2
2.1 ASTM Standards:
B8 Specification for Concentric-Lay-Stranded Copper 4. Summary of Test Method
Conductors, Hard, Medium-Hard, or Soft
4.1 A test lot of test specimens of the crimp terminal
B258 Specification for Nominal Diameters and Cross-
crimpedtoashortlengthofwireisprepared.Thewireispulled
SectionalAreasofAWGSizesofSolidRoundWiresUsed
from a group of the specimens in a tensile pull and the force
as Electrical Conductors
compared to set requirements based on wire diameter. A
B542 Terminology Relating to Electrical Contacts and Their
separate group of specimens is subjected to an electrical test
Use
where resistance stability of the specimen is evaluated during
deflectionofthewireattheexitofthecrimpedconnection.The
1
This test method is under the jurisdiction of ASTM Committee B02 on
group is then aged for 33 days at 118°C and periodically
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
retested in the electrical test. The electrical test results are
B02.11 on Electrical Contact Test Methods.
compared to a standard value based on wire diameter.Atest lot
Current edition approved Oct. 1, 2010. Published October 2010. Originally
passes the evaluation if it passes both the mechanical pull test
approved in 2000. Last previous edition approved in 2005 as B913 – 05. DOI:
10.1520/B0913-05R10.
and the electrical test. In Method B, additional pull tests are
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
performed on subgroups of parts during and after the aging test
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
to provide information on progressive degradation in perfor-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. mance.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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1.3 The limitations of the test method are as follows:  
1.3.1 This test method shall not be considered to confirm a specific lifetime in application environments.  
1.3.2 The applicability of this test method is limited to pressure connection systems rated at or below 600 V d-c or a-c RMS.  
1.3.3 This test method is limited to temperature and water vapor exposure in addition to electrical current as required to measure connection resistance.  
1.3.4 This test method does not evaluate degradation which may occur in residential applications due to exposure of the electrical connection system to additional environmental constituents such as (but not limited to) the following examples:
1.3.4.1 Household chemicals (liquid or gaseous) such as ammonia, bleach, or other cleaning agents.
1.3.4.2 Chemicals as may occur due to normal hobby or professional activities such as photography, painting, sculpture, or similar activities.
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1.4 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 become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product...

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1.2 The MFG tests described in this guide are designed to accelerate corrosive degradation processes. These accelerations are designed such that the degradation occurs in a much shorter time period than that expected for such processes in the intended application environment of the device being tested. Application environments can vary continuously from benign to aggressively corrosive. Connectors and contacts within closed electronic cabinets may be affected by an environment of different severity than the environment on the outside of such cabinets. In general, indoor environments are different than outdoor environments. The MFG tests described herein, being discrete embodiments of specific corrosive conditions, cannot be representative of all possible application environments. It is the responsibility of the test specifier to assure the pertinence of a given test condition to the specifier's application condition.  
1.3 The MFG tests described herein are not designed to duplicate the actual intended application environment of the device under test. An extended bibliography that provides information which is useful to test specifiers to assist them in selecting appropriate test methods is included in this guide. The bibliography covers the scope from application condition characterization, single and multiple gas effects, and material and product effects to key application and test variables as well as discussions of atmospheric corrosion processes.  
1.4 The values stated in SI units are to be regarded as standard. No other uni...

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4.1 This procedure provides a method for defining the magnitude and direction of cross curvature, an inherent property in thermostat metal.
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Note 2: This standard includes means for calculating cross curvature for widths other than that of the specimen having the same radius of curvature.  
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 become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use.  
1.4 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.

  • Standard
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  • Standard
    3 pages
    English language
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