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ASTM B279-13(2019)

Current Reaffirmation

Standard Test Method for Stiffness of Bare Soft Square and Rectangular Copper and Aluminum Wire for Magnet Wire Fabrication (Withdrawn 2004)

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1.1 This test method, known as the low-stress elongation (LSE) test, covers the procedure for determining the stiffness of bare soft square and rectangular copper and aluminum wire in terms of the permanent elongation resulting from the application of a tensile stress.

1.2 The SI values for the mass of the specimen are regarded as the standard. For all other properties, the inch-pound values are to be regarded as standard and the SI units may be approximate.

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.


3.1 This test method is designed as an inspection or acceptance test of new bare soft square and rectangular wire intended for subsequent fabrication into magnet wire.

Note 1: Since the applied unit stress and the time of application are constant for all wire sizes, the test enables comparisons of stiffness to be made between wires of the same or different size on the basis of the permanent elongation resulting from the application of a low unit stress.

SDO ASTM: ASTM International
Document Number B279
Publication Date Oct. 1, 2019
Language en - English
Page Count 2
Revision Level 13(2019)
Supercedes
Committee B01.02
Publish Date Document Id Type View
Sept. 1, 2013 B0279-13 Revision
April 1, 2004 B0279-04 Revision
Sept. 10, 1998 B0279-98 Revision
Oct. 1, 2019 B0279-13R19 Reaffirmation