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Yttria vs. Boron Carbide

Yttria belongs to the oxide-based engineering ceramics classification, while boron carbide belongs to the non-oxide engineering ceramics. There are 10 material properties with values for both materials. Properties with values for just one material (12, 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 yttria and the bottom bar is boron carbide.

Metric UnitsUS Customary Units

Material Properties

Compressive (Crushing) Strength, MPa 390
1710 to 2200
Density, g/cm3 5.0
2.1 to 2.7
Elastic (Young's, Tensile) Modulus, GPa 120
240 to 460
Maximum Temperature: Mechanical, °C 2000
1000 to 2500
Specific Heat Capacity, J/kg-K 440
950
Stiffness to Weight: Axial, points 13
63 to 100
Stiffness to Weight: Bending, points 32
91 to 100
Thermal Conductivity, W/m-K 0.3
31 to 90
Thermal Diffusivity, mm2/s 0.14
16 to 38
Thermal Expansion, µm/m-K 8.0
4.5 to 5.6