Standard Practice for Making Reference Glass-Metal Butt Seals and Testing for Expansion Characteristics by Polarimetric Methods

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-09-2020

Publisher

American Society for Testing and Materials

1.1This practice covers the preparation and testing of reference glass-metal butt seals of two general configurations, one applicable to determining stress in the glass and the other applicable to determining the degree of mismatch of thermal expansion (or contraction). Tests are in accordance with Test Method F218, Subsection 1.1.

1.2This practice applies to all glass and metal (or alloy) combinations normally sealed together in the production of electronic components. It should not be attempted with glass-metal combinations having widely divergent thermal expansion (or contraction) properties.

1.3This 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.

Committee	C 14
DocumentType	Standard Practice
Pages	7
PublisherName	American Society for Testing and Materials
Status	Current
Supersedes	ASTM F 140 : 1998 : R2013

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ASTM F 30 : 1996	Standard Specification for Iron-Nickel Sealing Alloys
ASTM F 15 : 2004 : R2022	Standard Specification for Iron-Nickel-Cobalt Sealing Alloy
ASTM F 31 : 2021	Standard Specification for Nickel-Chromium-Iron Sealing Alloys
ASTM F 31 : 2016	Standard Specification for Nickel-Chromium-Iron Sealing Alloys
ASTM F 47 : 1994	Test Method for Crystalographic Perfection of Silicon by Preferential Etch Techniques (Withdrawn 1998)