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ASTM D2442-75(2020)

(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 specification 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 standard. The values given in parentheses after SI units are provided for information only and are not considered standard.  
1.3 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.

General Information

Status
Published
Publication Date
31-Oct-2020
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

Refers
ASTM C242-20 - Standard Terminology of Ceramic Whitewares and Related Products
Effective Date
01-Feb-2020

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ASTM D2442-75(2020) - Standard Specification for Alumina Ceramics for Electrical and Electronic ApplicationsASTM D2442-75(2020) - Standard Specification for Alumina Ceramics for Electrical and Electronic Applications
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ASTM D2442-75(2020) - Standard Specification for Alumina Ceramics for Electrical and Electronic Applications
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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.
Designation:D2442 −75 (Reapproved 2020)
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
specification 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
Insulating Materials
standard. The values given in parentheses after SI units are
D618Practice for Conditioning Plastics for Testing
provided for information only and are not considered standard.
D1711Terminology Relating to Electrical Insulation
1.3 This international standard was developed in accor-
D1829Test Method for Electrical Resistance of Ceramic
dance with internationally recognized principles on standard-
3
Materials at Elevated Temperatures (Withdrawn 2001)
ization established in the Decision on Principles for the
D2149Test Method for Permittivity (Dielectric Constant)
Development of International Standards, Guides and Recom-
And Dissipation Factor Of Solid Dielectrics At Frequen-
mendations issued by the World Trade Organization Technical
cies To 10 MHz And Temperatures To 500°C
Barriers to Trade (TBT) Committee.
D2520Test Methods for Complex Permittivity (Dielectric
2. Referenced Documents
Constant) of Solid Electrical Insulating Materials at Mi-
2
2.1 ASTM Standards: crowave Frequencies and Temperatures to 1650°C
C20Test Methods forApparent Porosity, WaterAbsorption, E6Terminology Relating to Methods of Mechanical Testing
Apparent Specific Gravity, and Bulk Density of Burned
E12Terminology Relating to Density and Specific Gravity
3
Refractory Brick and Shapes by Boiling Water
of Solids, Liquids, and Gases (Withdrawn 1996)
C108Symbols for Heat Transmission
E122PracticeforCalculatingSampleSizetoEstimate,With
C242Terminology of Ceramic Whitewares and Related
Specified Precision, the Average for a Characteristic of a
Products
Lot or Process
C408Test Method for Thermal Conductivity of Whiteware
E165/E165MPractice for Liquid Penetrant Testing for Gen-
Ceramics
eral Industry
C573Methods for ChemicalAnalysis of Fireclay and High-
E228Test Method for Linear Thermal Expansion of Solid
3
Alumina Refractories (Withdrawn 1995)
Materials With a Push-Rod Dilatometer
C623Test Method for Young’s Modulus, Shear Modulus,
F19Test Method for Tension and Vacuum Testing Metal-
and Poisson’s Ratio for Glass and Glass-Ceramics by
lized Ceramic Seals
Resonance
F77Test Method for Apparent Density of Ceramics for
Electron Device and Semiconductor Application (With-
1
This specification is under the jurisdiction of Committee C21 on Electrical and
3
drawn 2001)
Electronic Insulating Materials.
Current edition approved Nov. 1, 2020. Published December 2020. Originally F109Terminology Relating to Surface Imperfections on
approved in 1965. Last previous edition approved in 2016 as D2442–75(2016).
Ceramics
DOI: 10.1520/D2442-75R20.
F134Test Methods for Determining Hermeticity of Electron
2
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 Devices with a Helium Mass Spectrometer Leak Detector
3
Standards volume information, refer to the standard’s Document Summary page on
(Withdrawn 1996)
the ASTM website.
F417Test Method for Flexural Strength (Modulus of Rup-
3
The last approved version of this historical standard is referenced on
3
www.astm.org. ture) of Electronic-Grade Ceramics (Withdrawn 2001)
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D2442−75 (2020)
TABLE 1 Electrical Requirements
2.2 Other Standards:
MIL-ST
...

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4.1 Using the procedures and apparatus in Sections 8 and 9 and the manufacturer's instructions, pressure-tight joints as strong as the pipe itself can be made between manufacturer-recommended combinations of pipe and fittings. See Specification F1055 for performance requirements of polyethylene electrofusion fittings.
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1.1 This practice describes procedures for making joints suitable for pressure service with polyethylene (PE) pipe and fittings by means of electrofusion joining techniques in, but not limited to, a field environment. Other suitable electrofusion joining procedures are available from various sources including fitting manufacturers. This standard does not purport to address all possible electrofusion joining procedures, or to preclude the use of qualified procedures developed by other parties that have been proven to produce reliable electrofusion joints. (Note 1)
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