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ASTM F288-96(2019)
Standard Specification for Tungsten Wire for Electron Devices and Lamps
Translate name
STANDARD published on 1.4.2019
The information about the standard:
Designation standards: ASTM F288-96(2019)
Note: WITHDRAWN
Publication date standards: 1.4.2019
SKU: NS-945926
The number of pages: 5
Approximate weight : 15 g (0.03 lbs)
Country: American technical standard
Category: Technical standards ASTM
The category - similar standards:
Annotation of standard text ASTM F288-96(2019) :
Keywords:
electron devices, thoriated tungsten wire, tungsten wire, UNS R07005, UNS R07911, UNS R07912 ,, ICS Number Code 29.060.10 (Wires)
Additional information
| 1. Scope | ||||||||||||||
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1.1 This specification covers three types of drawn wire suitable for fabrication into parts for electron tubes, lamps, and other devices; and one type of rod for metal-to-glass sealing (grid wire is excepted): 1.1.1 Type 1A—Commercially pure nonsag wire (Note 2 and Note 3). 1.1.2 Type 1B—Commercially pure rod suitable for metal-to-glass sealing. 1.1.3 Type 2A—Thoriated filament wire containing 1 % thoria. 1.1.4 Type 2B—Thoriated filament wire containing 2 % thoria. 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 Types 1A and 1B are designated as UNS R07005. Type 2A is designated as UNS R07911. Type 2B is designated as UNS R07912. 1.4 The following precautionary caveat pertains only to the Chemical Analysis, Section 12 of this specification: 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. Note 1: A dimensional measurement method for testing nonsag
tungsten wire above 0.030 in. (0.76 mm) in diameter is provided in
Test Method F269.
Note 2: Acceptance of nonsag wire characteristics for
particular applications of size shall be by agreement between
producer and consumer based on either a flashed microstructure as
shown by photomicrographs, or on dimensional measurement limits
determined in accordance with Test Method F269.
1.5 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. |
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| 2. Referenced Documents | ||||||||||||||
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