ASTM F105-72(2019)

Standard Specification for Type 58 Borosilicate Sealing Glass

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STANDARD published on 1.11.2019

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The information about the standard:

Designation standards: ASTM F105-72(2019)
Publication date standards: 1.11.2019
SKU: NS-975170
The number of pages: 3
Approximate weight : 9 g (0.02 lbs)
Country: American technical standard
Category: Technical standards ASTM

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Seals, glands

Annotation of standard text ASTM F105-72(2019) :

This specification covers type 58 borosilicate sealing glass for use in electronic applications. The glass material shall conform to the chemical composition requirements prescribed. The material shall conform to the physical and electrical properties prescribed. The glass shall have a finish that ensures smooth, even surfaces and freedom from cracks, checks, bubbles, and other flaws of a character detrimental to the strength or life of the component or device for which its use is intended. The softening point and annealing point shall be tested to meet the requirements prescribed. The thermal expansion coefficient of the glass material shall be determined using the required procedure. The contracting coefficient of the glass material shall be tested to meet the requirements prescribed. The thermal contraction match between the glass and a sealing alloy may be determined by preparing and testing an assembly to meet the requirements prescribed.

Keywords:

ICS Number Code 21.140 (Seals, glands)

Additional information

1. Scope

1.1 This specification covers Type 58 borosilicate sealing glass for use in electronic applications.

Note 1: This specification is primarily intended to consider glass as most generally used, that is, glass in its transparent form as normally encountered in fabricating electronic devices. X1.3 refers to a sealing alloy that is compatible with this glass. Type 58 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.

1.2 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.

2. Referenced Documents

F14-80(2019)	Standard Practice for Making and Testing Reference Glass-Metal Bead-Seal
F15-04(2022)	Standard Specification for Iron-Nickel-Cobalt Sealing Alloy
F140-98(2020)	Standard Practice for Making Reference Glass-Metal Butt Seals and Testing for Expansion Characteristics by Polarimetric Methods
F144-80(2019)	Standard Practice for Making Reference Glass-Metal Sandwich Seal and Testing for Expansion Characteristics by Polarimetric Methods
E228-22	Standard Test Method for Linear Thermal Expansion of Solid Materials With a Push-Rod Dilatometer
D150-22	Standard Test Methods for AC Loss Characteristics and Permittivity (Dielectric Constant) of Solid Electrical Insulation
D257-14(2021)e1	Standard Test Methods for DC Resistance or Conductance of Insulating Materials (Includes all amendments and changes 5/6/2021).
E29-22	Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
C336-71(2020)	Standard Test Method for Annealing Point and Strain Point of Glass by Fiber Elongation
C338-93(2019)	Standard Test Method for Softening Point of Glass
C598-93(2019)	Standard Test Method for Annealing Point and Strain Point of Glass by Beam Bending

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