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ASTM D2520-13

Standard Test Methods for Complex Permittivity (Dielectric Constant) of Solid Electrical Insulating Materials at Microwave Frequencies and Temperatures to 1650<sup>o</sup>C

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ASTM D2520-13

Standard Test Methods for Complex Permittivity (Dielectric Constant) of Solid Electrical Insulating Materials at Microwave Frequencies and Temperatures to 1650<sup>o</sup>C

PUBLISH DATE 2013

PAGES 17

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1.1 These test methods cover the determination of relative (Note 1) complex permittivity (dielectric constant and dissipation factor) of nonmagnetic solid dielectric materials.

Note 1—The word “relative” is often omitted.

1.1.1 Test Method A is for specimens precisely formed to the inside dimension of a waveguide.

1.1.2 Test Method B is for specimens of specified geometry that occupy a very small portion of the space inside a resonant cavity.

1.1.3 Test Method C uses a resonant cavity with fewer restrictions on specimen size, geometry, and placement than Test Methods A and B.

1.2 Although these methods are used over the microwave frequency spectrum from around 0.5 to 50.0 GHz, each octave increase usually requires a different generator and a smaller test waveguide or resonant cavity.

1.3 Tests at elevated temperatures are made using special high-temperature waveguide and resonant cavities.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

4.1 Design calculations for such components as transmission lines, antennas, radomes, resonators, phase shifters, etc., require knowledge of values of complex permittivity at operating frequencies. The related microwave measurements substitute distributed field techniques for low-frequency lumped-circuit impedance techniques.

4.2 Further information on the significance of permittivity is contained in Test Methods D150.

4.3 These test methods are useful for specification acceptance, service evaluation, manufacturing control, and research and development of ceramics, glasses, and organic dielectric materials.


SDO	ASTM: ASTM International
Document Number	D2520
Publication Date	May 1, 2013
Language	en - English
Page Count	17
Revision Level	13
Supercedes
Committee	D09.12

Publish Date	Document Id	Type
April 1, 2021	D2520-21	Revision
May 1, 2013	D2520-13	Revision
May 10, 2001	D2520-95	Revision
May 10, 2001	D2520-01	Revision

SDO	Document	Title
ASTM	D2149	Standard Test Method for Permittivity (Dielectric Constant) and Dissipation Factor of Solid Dielectrics at Frequencies to 10 MHz and Temperatures to 500 °C
ASTM	A893/A893M	Standard Test Method for Complex Dielectric Constant of Nonmetallic Magnetic Materials at Microwave Frequencies
ASTM	A893	Standard Test Method for Complex Dielectric Constant of Nonmetallic Magnetic Materials at Microwave Frequencies
ASTM	D149	Standard Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials at Commercial Power Frequencies
BSI	BS EN 61234-1	Method of test for hydrolytic stability of electrical insulating materials. Method of test for hydrolytic stability of electrical insulating materials. Plastic films
ASTM	D150	Standard Test Methods for AC Loss Characteristics and Permittivity (Dielectric Constant) of Solid Electrical Insulation
BSI	BS EN 61338-1-3	Waveguide type dielectric resonators. General information and test conditions. Measurement method of complex relative permittivity for dielectric resonator materials at microwave frequency
ASTM	D3755	Standard Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials Under Direct-Voltage Stress
ASTM	D3426	Standard Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials Using Impulse Waves
IEC	IEC 61338-1-3	Waveguide type dielectric resonators - Part 1-3: General information and test conditions - Measurement method of complex relative permittivity for dielectric resonator materials at microwave frequency
ASTM	D5568	Standard Test Method for Measuring Relative Complex Permittivity and Relative Magnetic Permeability of Solid Materials at Microwave Frequencies Using Waveguide
ASTM	D7449/D7449M	Standard Test Method for Measuring Relative Complex Permittivity and Relative Magnetic Permeability of Solid Materials at Microwave Frequencies Using Coaxial Air Line
ASTM	D3151	Standard Test Method for Thermal Failure of Solid Electrical Insulating Materials Under Electric Stress (Withdrawn 2007)
BSI	BS A 315	Aerospace. Nuts, hexagonal, slotted (castellated), reduced height, normal across flats, with MJ threads, classifications: 450 MPa (at ambient temperature)/120anddeg;C, 450 MPa (at ambient temperature)/235anddeg;C, 600 MPa (at ambient temperature)/425anddeg;C, 900 MPa (at ambient temperature)/235anddeg;C, 900 MPa (at ambient temperature)/315anddeg;C, 900 MPa (at ambient temperature)/650anddeg;C, 1100 MPa (at ambient temperature)/235anddeg;C, 1100 MPa (at ambient temperature)/730anddeg;C and 1250 MPa (at ambient temperature)/60
ASTM	D3850	Standard Test Method for Rapid Thermal Degradation of Solid Electrical Insulating Materials By Thermogravimetric Method (TGA)
BSI	BS A 314	Aerospace. Nuts, hexagonal, plain, reduced height, normal across flats, with MJ threads, classifications: 450 MPa (at ambient temperature)/120 anddeg;C, 450 MPa (at ambient temperature)/235 anddeg;C, 600 MPa (at ambient temperature)/425 anddeg;C, 900 MPa (at ambient temperature)/235 anddeg;C, 900 MPa (at ambient temperature)/315 anddeg;C, 900 MPa (at ambient temperature)/650 anddeg;C, 1100 MPa (at ambient temperature)/235 anddeg;C, 1100 MPa (at ambient temperature)/730 anddeg;C and 1250 MPa (at ambient temperature)/ 600 anddeg;C.
ISO	ISO 9609	Aerospace - Nuts, hexagonal, plain, reduced height, normal across flats, with MJ threads, classifications: 450 MPa (at ambient temperature) /120 degrees C, 450 MPa (at ambient temperature) /235 degrees C, 600 MPa (at ambient temperature) /425 degrees C, 900 MPa (at ambient temperature) /235 degrees C, 900 MPa (at ambient temperature) /315 degrees C, 900 MPa (at ambient temperature) /650 degrees C, 1 100 MPa (at ambient temperature) /235 degrees C, 1 100 MPa (at ambient temperature) /730 degrees C and 1 250 MPa (at ambient temperature)/600 degrees C - Dimensions
ISO	ISO 9618	Aerospace - Nuts, hexagonal, slotted (castellated), reduced height, normal across flats, with MJ threads, classifications: 450 MPa (at ambient temperature)/120 degrees C, 450 MPa (at ambient temperature)/235 degrees C, 600 MPa (at ambient temperature)/425 degrees C, 900 MPa (at ambient temperature)/235 degrees C, 900 MPa (at ambient temperature)/315 degrees C, 900 MPa (at ambient temperature)/650 degrees C, 1 100 MPa (at ambient temperature)/235 degrees C, 1 100 MPa (at ambient temperature)/730 degrees C and 1 250 MPa (at ambient temperature)/600 degrees C - Dimensions
ASTM	D1389	Standard Test Method for Proof-Voltage Testing of Thin Solid Electrical Insulating Materials (Withdrawn 2014)
BSI	BS EN 60243-1	Electric strength of insulating materials. Test methods. Tests at power frequencies
ISO	ISO 8279	Aerospace - Nuts, hexagonal, plain, normal height, normal across flats, with MJ threads, classifications: 600 MPa (at ambient temperature)/120 degrees C, 600 MPa (at ambient temperature)/235 degrees C, 900 MPa (at ambient temperature)/425 degrees C, 1 100 MPa (at ambient temperature)/235 degrees C, 1 100 MPa (at ambient temperature)/315 degrees C, 1 100 MPa (at ambient temperature)/650 degrees C, 1 210 MPa (at ambient temperature)/730 degrees C, 1 250 MPa (at ambient temperature)/235 degrees C and 1 550 MPa (at ambient temperature)/600 degrees C - Dimensions
ISO	ISO 4147	Aerospace - Nuts, hexagonal, slotted (castellated), normal height, normal across flats, with MJ threads, classifications: 600 MPa (at ambient temperature)/120 degrees C, 600 MPa (at ambient temperature)/235 degrees C, 900 MPa (at ambient temperature)/425 degrees C, 1 100 MPa (at ambient temperature)/235 degrees C, 1 100 MPa (at ambient temperature)/315 degrees C, 1 100 MPa (at ambient temperature)/650 degrees C, 1 210 MPa (at ambient temperature)/730 degrees C, 1 250 MPa (at ambient temperature)/235 degrees C and 1 550 MPa (at ambient temperature)/600 degrees C - Dimensions
BSI	BS EN 60811-3-1	Insulating and sheathing materials of electric cables. Common test methods. Methods specific to PVC compounds. Pressure test at high temperature. Tests for resistance to cracking
JIS	JIS C 2116	Methods of test for electrical insulating materials based on mica
BSI	BS EN 61338-1-4	Waveguide type dielectric resonators. General information and test conditions. Measurement method of complex relative permittivity for dielectric resonator materials at millimetre-wave frequency

ASTM D2520-13

Standard Test Methods for Complex Permittivity (Dielectric Constant) of Solid Electrical Insulating Materials at Microwave Frequencies and Temperatures to 1650<sup>o</sup>C

ASTM D2520-13

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