Volume Resistivity

Volume resistivity is used to measure how strongly a material can oppose or resist the flow of electric current. Materials are categorized as having either high or low volume resistivity.

Materials such as Precision Ceramics Ultra-pure Alumina have the highest resistivity values at 1 x 10¹⁶ ohm-cm.

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Materials Ranked by Volume Resistivity

Precision Ceramics CeramAlox Ultra Pure has highest volume resistivity at 1 x 10¹⁶ ohm-cm with low dielectric loss. Macor has similar electrical performance to Alumina at room temperature. Higher purity Alumina materials will maintain their electrical properties at elevated temperatures.

Macor® – Machinable Glass Ceramic

1 x 10¹⁷ Ohm-cm
Macor is a hybrid glass-ceramic with the versatility of a high performance polymer, the machinability of a metal, and the performance of an advanced technical ceramic.
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Alumina (Al2O3) – CeramAlox™ Ultra Pure

1 x 10¹⁶ Ohm-cm
CeramaAlox Ultra Pure is a very high purity (99.95%) grade of Alumina (Aluminum Oxide) exhibiting an exceptional combination of mechanical and electrical properties.
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Shapal Hi M Soft™ - Machinable AlN

1 x 10¹⁵ Ohm-cm
Shapal Hi-M Soft is a hybrid type of machinable Aluminum Nitride (AlN) ceramic that offers high mechanical strength and thermal conductivity.
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Aluminum Nitride (AlN) – PCAN1000S

1 x 10¹⁴ Ohm-cm
Aluminum Nitride (AlN) is an excellent material to use if high thermal conductivity and electrical insulation properties and PCAN1000S offers the highest electrical resistivity from the AlN grades.
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Silicon Nitride (Si3N4) – CeramaSil-N™

1 x 10¹⁴ Ohm-cm
Silicon Nitride has the most versatile combination of mechanical, thermal, and electrical properties of any advanced ceramic material.
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Ceramic Material Comparison Chart

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Related Properties

Density

Density is the mass of a material per unit volume. The unit of measurement can be expressed in different ways and is referred us as g/cm3 but another measurement value is kg/m3.

Thermal Conductivity

Thermal conductivity measures how easily heat is transmitted through a material. There is a growing specialist market for advanced ceramics use in applications with high thermal conductivity requirements.

Flexural Strength

Flexural strength, also known as bending strength, modulus of rupture or transverse rupture strength, is defined as the maximum stress in a material just before it yields in a bending test

Volume Resistivity