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ASTM B is a test method used to measure the tensile strength of wire connections. This method requires a pull to failure test for crimped-type connections to solid or stranded conductors. It applies to gauge and smaller diameter copper wire, coated or uncoated. This test method is designed in two parts: Method A and Method B. Prepare a lot of test specimens of the crimp terminal crimped to a short length of wire. For Method A, prepare 64 specimens, for Method B, prepare 94 specimens.

For both methods the wire should be pulled from a group of the specimens in a tensile pull and the force compared to set requirements based on wire diameter. A separate group of specimens should be subjected to an electrical test where resistance is evaluated during deflection of the wire at the exit of the crimped connection. Your electrical test results can be compared to a standard value based on wire diameter. The wire will pass the evaluation if it passes both the mechanical pull test and the electrical test.

In Method B, additional pull tests are performed on subgroups of parts during and after the aging test to provide information on progressive degradation in performance. A universal testing machine can be used to test for B By means of our testing expertise and modular product design, we will help find the testing solution that is right for you. Give one of our application engineers a call today for help with creating the best budget and testing plan according to ASTM B Forces up to 10 kN 2, lbf Low force tabletop systems Modular series of five frame options with adjustable test space Affordable testing option for tension, compression, bend, peel and much more.

Designed for working with environmental chambers Utilizes clip-on or adhesive markers to determine gage length Resolution of 1 micron. We'll only use this information to connect you to an application expert and it won't be shared with anyone else. Privacy Policy. We offer machines, apparatus, testers, tensile grips, test fixtures, clamps, holders, jigs, faces, jaws, extensometers, environmental and humidity chambers, furnaces, baths and custom solutions for unique applications.

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ASTM B913 Testing Crimped Wire Connections

Historical Version s - view previous versions of standard. Work Item s - proposed revisions of this standard. More B 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.

BS 970 230M07 PDF

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