ASTM-F140 Standard Practice for Making Reference Glass-Metal Butt Seals and Testing for Expansion Characteristics by Polarimetric Methods

ASTM-F140 - 1998 R20 EDITION - CURRENT
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Standard Practice for Making Reference Glass-Metal Butt Seals and Testing for Expansion Characteristics by Polarimetric Methods
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Scope

1.1 This 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 to determining the degree of mismatch of thermal expansion (or contraction). 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. It should not be attempted with glass-metal combinations having widely divergent thermal expansion (or contraction) properties.

Keywords

expansion mismatch; glass-metal seals

To find similar documents by ASTM Volume:

15.02 (Glass; Ceramic Whitewares)

To find similar documents by classification:

21.140 (Seals, glands Seals for pipe and hose assemblies, see 23.040.80)

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Document Number

ASTM-F0140-98R20

Revision Level

1998 R20 EDITION

Status

Current

Modification Type

Revision

Publication Date

Sept. 23, 2020

Document Type

Practice

Page Count

7 pages

Committee Number

C14.04