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ASTM D2442-75(2012)

(Specification)

Standard Specification for Alumina Ceramics for Electrical and Electronic Applications

Standard Specification for Alumina Ceramics for Electrical and Electronic Applications

SCOPE
1.1 This specification covers the requirements for fabricated alumina parts suitable for electronic and electrical applications and ceramic-to-metal seals as used in electron devices. This standard specifies limits and methods of test for electrical, mechanical, thermal, and general properties of the bodies used for these fabricated parts, regardless of part geometry.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

General Information

Status
Historical
Publication Date
31-Mar-2012
ICS
29.035.30 - Glass and ceramic insulating materials
81.060.20 - Ceramic products
Technical Committee
C21 - Ceramic Whitewares and Related Products
Drafting Committee
C21.03 - Methods for Whitewares and Environmental Concerns
Current Stage
Ref Project

Relations

Replaces
ASTM D2442-75(2007) - Standard Specification for Alumina Ceramics for Electrical and Electronic Applications
Effective Date
01-Apr-2012

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ASTM D2442-75(2012) - Standard Specification for Alumina Ceramics for Electrical and Electronic ApplicationsASTM D2442-75(2012) - Standard Specification for Alumina Ceramics for Electrical and Electronic Applications
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ASTM D2442-75(2012) - Standard Specification for Alumina Ceramics for Electrical and Electronic Applications
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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D2442 −75(Reapproved 2012)
Standard Specification for
Alumina Ceramics for Electrical and Electronic
1
Applications
This standard is issued under the fixed designation D2442; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope D116Test Methods for Vitrified Ceramic Materials for
Electrical Applications
1.1 Thisspecificationcoverstherequirementsforfabricated
D149Test Method for Dielectric Breakdown Voltage and
alumina parts suitable for electronic and electrical applications
DielectricStrengthofSolidElectricalInsulatingMaterials
and ceramic-to-metal seals as used in electron devices. This
at Commercial Power Frequencies
standard specifies limits and methods of test for electrical,
D150Test Methods forAC Loss Characteristics and Permit-
mechanical, thermal, and general properties of the bodies used
tivity (Dielectric Constant) of Solid Electrical Insulation
for these fabricated parts, regardless of part geometry.
D257Test Methods for DC Resistance or Conductance of
1.2 The values stated in SI units are to be regarded as the
Insulating Materials
standard. The values given in parentheses are for information
D618Practice for Conditioning Plastics for Testing
only.
D1711Terminology Relating to Electrical Insulation
D1829Test Method for Electrical Resistance of Ceramic
2. Referenced Documents
3
Materials at Elevated Temperatures (Withdrawn 2001)
2
2.1 ASTM Standards:
D2149Test Method for Permittivity (Dielectric Constant)
C20Test Methods forApparent Porosity, WaterAbsorption,
And Dissipation Factor Of Solid Dielectrics At Frequen-
Apparent Specific Gravity, and Bulk Density of Burned
cies To 10 MHz And Temperatures To 500°C
Refractory Brick and Shapes by Boiling Water
D2520Test Methods for Complex Permittivity (Dielectric
C108Symbols for Heat Transmission
Constant) of Solid Electrical Insulating Materials at Mi-
C242Terminology of Ceramic Whitewares and Related
crowave Frequencies and Temperatures to 1650°C (With-
3
Products
drawn 2010)
C408Test Method for Thermal Conductivity of Whiteware
E6Terminology Relating to Methods of Mechanical Testing
Ceramics
E12Terminology Relating to Density and Specific Gravity
3
C573Methods for ChemicalAnalysis of Fireclay and High-
of Solids, Liquids, and Gases (Withdrawn 1996)
3
Alumina Refractories (Withdrawn 1995)
E122PracticeforCalculatingSampleSizetoEstimate,With
C623Test Method for Young’s Modulus, Shear Modulus,
Specified Precision, the Average for a Characteristic of a
and Poisson’s Ratio for Glass and Glass-Ceramics by
Lot or Process
Resonance
E165Practice for Liquid Penetrant Examination for General
Industry
E228Test Method for Linear Thermal Expansion of Solid
1
This specification is under the jurisdiction of Committee C21 on Ceramic
Materials With a Push-Rod Dilatometer
Whitewares and Related Products and is the direct responsibility of Subcommittee
F19Test Method for Tension and Vacuum Testing Metal-
C21.03 on Methods for Whitewares and Environmental Concerns.
lized Ceramic Seals
This specification also includes material and suggestions provided by ASTM
Committee D09 on Electrical and Electronic Insulating Materials. F77Test Method for Apparent Density of Ceramics for
Current edition approved April 1, 2012. Published April 2012. Originally
Electron Device and Semiconductor Application (With-
approved in 1965. Last previous edition approved in 2007 as D2442–75(2007).
3
drawn 2001)
DOI: 10.1520/D2442-75R12.
2
F109Terminology Relating to Surface Imperfections on
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Ceramics
Standards volume information, refer to the standard’s Document Summary page on
F134Test Methods for Determining Hermeticity of Electron
the ASTM website.
3 Devices with a Helium Mass Spectrometer Leak Detector
The last approved version of this historical standard is referenced on
3
(Withdrawn 1996)
www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D2442−75 (2012)
TABLE 1 Electrical Requirements
F417Test Method for Flexural Strength (Modulus of Rup-
3
ture) of Electronic-Grade Ceramics (Withdrawn 2001) Property Type I Type II Type III Type IV
Dielectric constant,
2.2 Other Standards:
max 25°C:
MIL-STD-105 Sampling Procedures and Tables for Inspec-
at 1 MHz 8.8 9.6 9.8 10.1
4
tion by Attributes
at 10 GHz 8.7 9.6 9.8 10.1
Dissipation factor,
MIL-STD-883Test Methods and Procedures for Microelec-
5 max 25°C:
tronic
...

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