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ASTM F269-60(2019)

Historical Reaffirmation

Standard Test Method for Sag of Tungsten Wire

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1.1 This test method covers a determination of the sag properties of tungsten wire 0.030 in. (0.76 mm) and over in diameter.

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, 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.


This test method covers a determination of the sag properties of tungsten wire. The specimen of tungsten wire to be tested for sag shall have a clean, bright surface and should have the required length. With the aid of external heat, the test specimen shall be bent into a hairpin-shape until it reached the required distance between the ends. The formed test specimen shall be of sufficient length so that when clamped in the fixture, the exposed lengths measured from the top of the apex will be of required distance.


SDO ASTM: ASTM International
Document Number F269
Publication Date April 1, 2019
Language en - English
Page Count 2
Revision Level 60(2019)
Supercedes
Committee B10.04
Publish Date Document Id Type View
Sept. 19, 1960 F0269-60R02 Revision
April 1, 2019 F0269-60R19 Reaffirmation
June 1, 2014 F0269-60R14 Reaffirmation
May 1, 2009 F0269-60R09 Reaffirmation
Sept. 19, 1960 F0269-60R96E01 Reaffirmation