ASTM F105-72(2000)

Standard Specification for Type 58 Borosilicate Sealing Glass

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.

General Information

• Status: Historical
• Publication Date: 31-Dec-1994
• ICS: 21.140 - Seals, glands
• Technical Committee: C14 - Glass and Glass Products
• Drafting Committee: C14.04 - Physical and Mechanical Properties

Relations

• Replaces: ASTM F105-72(1995)e1 - Standard Specification for Type 58 Borosilicate Sealing Glass
• Effective Date: 01-Jan-1995
• Replaced By: ASTM F105-72(2005) - Standard Specification for Type 58 Borosilicate Sealing Glass
• Effective Date: 01-Sep-2005
• Referred By: ASTM F144-80(2019) - Standard Practice for Making Reference Glass-Metal Sandwich Seal and Testing for Expansion Characteristics by Polarimetric Methods
• Effective Date: 01-Jan-1995
• Referred By: ASTM F140-98(2020) - Standard Practice for Making Reference Glass-Metal Butt Seals and Testing for Expansion Characteristics by Polarimetric Methods
• Effective Date: 01-Jan-1995
• Referred By: ASTM F14-80(2019) - Standard Practice for Making and Testing Reference Glass-Metal Bead-Seal
• Effective Date: 01-Jan-1995

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: F 105 – 72 (Reapproved 2000)
Standard Specification for
Type 58 Borosilicate Sealing Glass
This standard is issued under the fixed designation F 105; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope Polarimetric Methods
1.1 This specification covers Type 58 borosilicate sealing
3. Ordering Information
glass for use in electronic applications.
3.1 Orders for material under this specification shall include
NOTE 1—This specification is primarily intended to consider glass as
the following information:
most generally used, that is, glass in its transparent form as normally
3.1.1 Form,
encountered in fabricating electronic devices. X1.3 refers to a sealing
3.1.2 Type of glass,
alloy that is compatible with this glass. Type 58 glass in other forms such
3.1.3 Dimensions,
as powdered, crushed, sintered, fibrous, etc., are excluded. The require-
3.1.4 Marking and packaging, and
ments of this specification, as applied to these forms, must be established
in the raw glass prior to its conversion.
3.1.5 Certification (if required).
2. Referenced Documents
4. Chemical Composition
2.1 ASTM Standards:
4.1 The typical chemical composition of this glass is as
C 336 Test Method for Annealing Point and Strain Point of
follows (Note 2):
Glass by Fiber Elongation
Weight %
C 338 Test Method for Softening Point of Glass
Major Constituents:
C 598 Test Method for Annealing Point and Strain Point of
Silica (SiO ) 65.0
Glass by Beam Bending
Alumina (Al O)7.5
2 3
Boron oxide (B O ) 18.0
D 150 Test Methods for ac Loss Characteristics and Permit- 2 3
Soda (Na O) 2.0
tivity (Dielectric Constant) of Solid Electrical Insulating
Potash (K O) 3.0
Materials
Barium oxide (BaO) 3.0
Minor Constituents:
D 257 Test Methods for dc Resistance or Conductance of
Lithium oxide (Li O) 0.6
Insulating Materials
Fluorine (F) 0.6, max
E 29 Practice for Using Significant Digits in Test Data to
Reducible oxides (Note 3) 0.05, max
Determine Conformance with Specification
NOTE 2—Major constituents may be adjusted to give the desired
E 228 Test Method for Linear Thermal Expansion of Solid
electricalandphysicalpropertiestotheglass.However,nochangeshallbe
Materials With a Vitreous Silica Dilatometer
made that alters any of these properties without due notification of, and
F 14 Practice for Making and Testing Reference Glass- approval by, the user.
NOTE 3—Total of arsenic trioxide (As O ), antimony trioxide (Sb O ),
Metal Bead-Seal
2 3 2 3
and lead oxide (PbO).
F 15 Specification for Iron-Nickel-Cobalt Sealing Alloy
F 140 Practice for Making Reference Glass-Metal Butt
5. Physical Requirements
Seals and Testing for Expansion Characteristics by Polari-
2 5.1 The material shall conform to the physical properties
metric Methods
prescribed in Table 1. For electrical properties see Table 2, and
F 144 Practice for Making Reference Glass-Metal Sand-
its Footnote A.
wich Seal and Testing for Expansion Characteristics by
6. Finish and Workmanship
6.1 The glass shall have a finish that ensures smooth, even
This specification is under the jurisdiction of ASTM Committee C14 on Glass
and Glass Products and is the direct responsibility of Subcommittee C14.04 on
surfaces and freedom from cracks, checks, bubbles, and other
Physical and Mechanical Properties.
flaws of a character detrimental to the strength or life of the
Current edition approved Nov. 10, 1995. Published January 1996. Originally
component or device for which its use is intended.
published as F 105 – 68 T. Last previous edition F 105 – 72 (1991).
Annual Book of ASTM Standards, Vol 15.02.
7. Test Methods
Annual Book of ASTM Standards, Vol 10.01.
Annual Book of ASTM Standards, Vol 14.02.
7.1 Softening Point—Test Method C 338.
Annual Book of ASTM Standards, Vol 10.04.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
F 105 – 72 (2000)
TABLE 1 Physical Requirements
A
Property ASTM Test Method Condition Value
Softening point C 338 see 7.1 715 6 10°C
Annealing point C 336 or C 598 see 7.2 480 6 10°C
Thermal expansion coefficient E 228 see 7.3 4.65 6 0.20 ppm/°C
0 to 300°C
Contraction coefficient E 228 see 7.4 5.8 6 0.20 ppm/°C
(annealing point minus 15 to 30°C)
A
Test methods and conditions are detailed in the appropriately referenced section of this specification.
A
TABLE 2 Electrical Properties
is optional. During this cooling schedule, determine the ther-
ASTM Test Condition, mal contraction curve and calculate the mean coefficient of
Property Typical Value
Method °C
linear thermal contraction between a point 15°C below the
Volume resistivity (dc) D 257 25 log R (V·cm)
annealing point and 30°C in accordance with Procedure B of
17.0
Test Method E 228.
250 log R (V·cm)
7.5 Bead Seal Test—The thermal contraction match be-
9.1
350 log R (V·cm)
tween the gla
...