ASTM F79 - 69(2010)

    Standard Specification for Type 101 Sealing Glass

    Active Standard ASTM F79 | Developed by Subcommittee: C14.04

    Book of Standards Volume: 15.02


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    ASTM F79

    Abstract

    This specification covers Type 101 sealing glass for use in electronic applications. The glass shall have a finish that ensures smooth, even surfaces and freedom from cracks, checks, bubbles, and other laws of a character detrimental to the strength or life of the component or device for which its use is intended. Different test methods shall be performed in order to determine the following properties of the sealing glass: softening point, annealing point, thermal expansion coefficient, contraction coefficient, and bead seal.

    This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

    1. Scope

    1.1 This specification covers Type 101 sealing glass for use in electronic applications.

    Note 1—This specification is primarily intended to consider glass as most generally used, this is, glass in its transparent form as normally encountered in fabricating electronic devices. X1.3 lists sealing metals and alloys that are compatible with this glass. Type 101 glass in other forms such as powdered, crushed, sintered, fibrous, etc. are excluded. The requirements of this specification, as applied to these forms, must be established in the raw glass prior to its conversion.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    C336 Test Method for Annealing Point and Strain Point of Glass by Fiber Elongation

    C338 Test Method for Softening Point of Glass

    C598 Test Method for Annealing Point and Strain Point of Glass by Beam Bending

    D150 Test Methods for AC Loss Characteristics and Permittivity (Dielectric Constant) of Solid Electrical Insulation

    D257 Test Methods for DC Resistance or Conductance of Insulating Materials

    E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

    E228 Test Method for Linear Thermal Expansion of Solid Materials With a Push-Rod Dilatometer

    F14 Practice for Making and Testing Reference Glass-Metal Bead-Seal

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

    F144 Practice for Making Reference Glass-Metal Sandwich Seal and Testing for Expansion Characteristics by Polarimetric Methods


    ICS Code

    ICS Number Code 21.140 (Seals, glands)

    UNSPSC Code

    UNSPSC Code


    DOI: 10.1520/F0079-69R10

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