1. 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.

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

C20 Test Methods for Apparent Porosity, Water Absorption, Apparent Specific Gravity, and Bulk Density of Burned Refractory Brick and Shapes by Boiling Water

C108 Symbols for Heat Transmission

C242 Terminology of Ceramic Whitewares and Related Products

C408 Test Method for Thermal Conductivity of Whiteware Ceramics

C573 Methods for Chemical Analysis of Fireclay and High-Alumina Refractories

C623 Test Method for Youngs Modulus, Shear Modulus, and Poissons Ratio for Glass and Glass-Ceramics by Resonance

D116 Test Methods for Vitrified Ceramic Materials for Electrical Applications

D149 Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials at Commercial Power Frequencies

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

D618 Practice for Conditioning Plastics for Testing

D1711 Terminology Relating to Electrical Insulation

D1829 Test Method for Electrical Resistance of Ceramic Materials at Elevated Temperatures

D2149 Test Method for Permittivity (Dielectric Constant) And Dissipation Factor Of Solid Dielectrics At Frequencies To 10 MHz And Temperatures To 500C

D2520 Test Methods for Complex Permittivity (Dielectric Constant) of Solid Electrical Insulating Materials at Microwave Frequencies and Temperatures to 1650C

E6 Terminology Relating to Methods of Mechanical Testing

E12 Terminology Relating to Density and Specific Gravity of Solids, Liquids, and Gases

E122 Practice for Calculating Sample Size to Estimate, With Specified Precision, the Average for a Characteristic of a Lot or Process

E165 Practice for Liquid Penetrant Examination for General Industry

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

F19 Test Method for Tension and Vacuum Testing Metallized Ceramic Seals

F77 Test Method for Apparent Density of Ceramics for Electron Device and Semiconductor Application

F109 Terminology Relating to Surface Imperfections on Ceramics

F134 Test Methods for Determining Hermeticity of Electron Devices with a Helium Mass Spectrometer Leak Detector

F417 Test Method for Flexural Strength (Modulus of Rupture) of Electronic-Grade Ceramics

Other Standards

Keywords

Alumina ceramics; Ceramic electrical/electronic devices/applications; Ceramic materials/applications--specifications; Deformation; Electronic materials/applications (ceramics)--specifications; Seals--electronic applications (specifications)

ICS Code

ICS Number Code 29.035.30 (Glass and ceramic insulating materials); 81.060.20 (Ceramic products)

DOI: 10.1520/D2442-75R12

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ASTM D2442