Silicon Carbide vs. Hafnia

Silicon carbide belongs to the non-oxide engineering ceramics classification, while hafnia belongs to the oxide-based engineering ceramics. There are 10 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is silicon carbide and the bottom bar is hafnia.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm³		3.0 to 3.2
Density, g/cm³		9.7

Elastic (Young's, Tensile) Modulus, GPa		370 to 490
Elastic (Young's, Tensile) Modulus, GPa		57

Electrical Resistivity Order of Magnitude, 10^x Ω-m		0.94 to 3.3
Electrical Resistivity Order of Magnitude, 10^x Ω-m		9.0

Maximum Temperature: Mechanical, °C		500 to 1590
Maximum Temperature: Mechanical, °C		2800

Specific Heat Capacity, J/kg-K		670 to 1180
Specific Heat Capacity, J/kg-K		120

Stiffness to Weight: Axial, points		69 to 84
Stiffness to Weight: Axial, points		3.3

Stiffness to Weight: Bending, points		79 to 82
Stiffness to Weight: Bending, points		13

Thermal Conductivity, W/m-K		120 to 170
Thermal Conductivity, W/m-K		1.1

Thermal Diffusivity, mm²/s		38 to 79
Thermal Diffusivity, mm²/s		0.95

Thermal Expansion, µm/m-K		4.0 to 4.5
Thermal Expansion, µm/m-K		6.0

Silicon Carbide vs. Hafnia

Material Properties

Find Materials

Table of Contents