ASTM-F269 › Standard Test Method for Sag of Tungsten Wire

ASTM-F269 - 1960 R19 EDITION - CURRENT
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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.

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Scope

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.

Keywords

creep testing; hydrogen atmosphere; sag properties; tungsten wire ;

To find similar documents by ASTM Volume:

02.04 (Nonferrous Metals--Nickel, Cobalt, Lead, Tin, Zinc, Cadmium, Precious, Reactive, Refractory Metals and Alloys; Materials for Thermostats, Electrical Heating and Resistance Contacts, and Connectors)

10.04 (Electronics; Declarable Substances in Materials; 3D Imaging Systems)

To find similar documents by classification:

29.060.10 (Wires Including electric rods, busbars, etc.)

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Document Number

ASTM-F269-60(2019)

Revision Level

1960 R19 EDITION

Status

Current

Modification Type

Reapproval

Publication Date

April 1, 2019

Document Type

Test Method

Page Count

2 pages

Committee Number

B10.04