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Electrical Properties Testing

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Electrical Properties Testing

The electrical properties of a material are the response behavior of the material when an electric field is applied, and it mainly includes conductivity, dielectric, ferroelectricity and piezoelectricity. Electrical testing helps determine the effectiveness of materials and components in electric fields. Careful measurement of these dielectric properties is critical to the performance and safety of modern electronic, satellite, and aerospace systems. As a professional reliability third-party testing organization, T,C&A Lab can provide Electrical Properties Testing service according to ISO, ASTM standards and industry requirements. Welcome to contact our experts for consultation.

Our testing scope includes but are not limited to

Our testing items

The general indicators to test electrical performance are as follows:

  • Dielectric strength

Dielectric strength is a measure of the electrical strength of a material as an insulator. It is defined as the maximum voltage per unit thickness when the sample is broken down, expressed as volts per unit thickness. The greater the dielectric strength of a substance, the better its quality as an insulator.

  • Dielectric constant

Dielectric constant, used to measure the performance of insulators in storing electrical energy. It is the ratio between the capacitance of two metal plates with insulating material as medium and the capacitance of the same two plates with air as medium or vacuum.

  • Dielectric loss

Dielectric loss refers to the phenomenon that the dielectric itself is heated due to the consumption of part of the electric energy in the alternating electric field, which is one of the indicators of the quality of insulating materials.

  • Volume resistivity

Volume resistivity, which is the impedance per unit volume of the material to the current, is used to characterize the electrical properties of the material. In general, the higher the volume resistivity, the more efficient the material is used as an electrical insulation component.

  • Coefficient of surface resistance

The ratio of the direct current electric field intensity in the surface layer of the insulating material to the linear current density, that is, the surface resistance per unit area; the unit is Ω/sq.

  • Arc resistance

The ability of a plastic material to resist deterioration caused by a high voltage arc, usually expressed by the time (the unit is seconds) it takes for a standard arc flame to carbonize the surface of the material to conduct electricity and then the arc disappears.

Standards we test to

  • ASTM B794, ASTM B193, ASTM D150, ASTM D149, ASTM D257, ASTM D495, ASTM D2520, ASTM D924, ASTM D877
  • IEC 60250, IEC 243-1, IEC 60243, IEC 60093, IEC 60093
  • ISO 1325, ISO 13931, ISO 21178, ISO 14309,

In addition, the experts in our Electrical Properties Testing Laboratory also provide a variety of custom services as your needs and requirements. Let's discuss the custom services with our experts for free.

Instruments and data

Electrical Properties Testing
Electrical Properties Testing Service

Note: the service is for research use only and not intended for any clinical use.


T,C& A LAB is an independent lab providing quality or custom testing, characterization and analysis of a variety of materials. Our engaged experts are ready to help you.

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