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ASTM B913 Test for Crimped Electrical Connections, Smaller Diameter Stranded and Solid Conductors

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ASTM B913: Standard Test Method for Evaluation of Crimped Electrical Connections to 16-Gauge and Smaller Diameter Stranded and Solid Conductors.


ASTM B913 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.

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.




Related Standard

ISO 1966 Crimped joints tensile test for aircraft electrical cables

ISO 1966: Crimped joints for aircraft electrical cables  


ISO 1966 describes the design requirements and tests for the crimping of insulated and non-insulated terminations to general purpose cables, with conductors of copper, copper alloy, aluminium or aluminium alloy, in locations in which the stabilized conductor temperature does not exceed the values specified for the relevant type, i. e. 105 °C, 190 °C or 260 °C. The type of cable with which the terminations are intended to be made has to be declared.

Crimp terminal, wire connector, electrical connector, cable lug, cable terminal, wire terminal etc., is widely use is various industry. The quality of a crimp joint depends on the strength of the joint as well as its electrical conductivity. Crimp joint testing can ensure the integrity of the final product. In general, wire connection lug testing can be broken into two categories; destructive pull testing and non-destructive pull testing. These tests both aim to determine a tensile force that the test wire can withstand. To meet the requirements of standard specifications, the tensile force that a wire can withstand must be greater than the minimum tensile strength defined by the standard.

ASTM B913 Test for Crimped Electrical Connections, Smaller Diameter Stranded and Solid ConductorsASTM B913 Test for Crimped Electrical Connections, Smaller Diameter Stranded and Solid Conductors


Related standard:

ASTM B913: Standard Test Method for Evaluation of Crimped Electrical Connections to 16-Gauge and Smaller Diameter Stranded and Solid Conductors.
ISO 1966: Crimped joints for aircraft electrical cables
ASTM F458: Standard Practice for Nondestructive Pull Testing of Wire Bonds1,2
EIA 364-08B: Crimp Tensile Strength Test Procedure for Electrical Connectors.
SAE/AS 7928: Terminal, Lug, Splice, and Crimp Copper Strength Specifications.


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