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ASTM F144-80(2000)

Historical Reaffirmation

Standard Practice for Making Reference Glass-Metal Sandwich Seal and Testing for Expansion Characteristics by Polarimetric Methods

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1.1 This practice covers the preparation and testing of a reference glass-metal sandwich seal for determining stress in the glass or for determining the degree of thermal expansion (or contraction) mismatch between the glass and metal. Tests are in accordance with Method F218 (Section 2).

1.2 This practice applies to all glass and metal (or alloy) combinations normally sealed together in the production of electronic components.

1.3 The practical limit of the test in deriving mismatch is approximately 300 ppm, above which the glass is likely to fracture.

1.4 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


SDO ASTM: ASTM International
Document Number F144
Publication Date Jan. 1, 2000
Language en - English
Page Count 6
Revision Level 80(2000)
Supercedes
Committee C14.04
Publish Date Document Id Type View
Nov. 1, 2019 F0144-80R19 Reaffirmation
May 1, 2015 F0144-80R15 Reaffirmation
April 1, 2010 F0144-80R10 Reaffirmation
Sept. 1, 2005 F0144-80R05 Reaffirmation
Jan. 1, 2000 F0144-80R00 Reaffirmation
Jan. 1, 2000 F0144-80R95E01 Reaffirmation