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Yttria vs. Engineering Porcelain

Both yttria and engineering porcelain are oxide-based engineering ceramics. There are 10 material properties with values for both materials. Properties with values for just one material (19, 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 engineering porcelain.

Metric UnitsUS Customary Units

Material Properties

Compressive (Crushing) Strength, MPa 390
590
Density, g/cm3 5.0
2.3 to 3.0
Elastic (Young's, Tensile) Modulus, GPa 120
67 to 150
Maximum Temperature: Mechanical, °C 2000
1170
Specific Heat Capacity, J/kg-K 440
600 to 1000
Stiffness to Weight: Axial, points 13
16 to 29
Stiffness to Weight: Bending, points 32
49 to 65
Thermal Conductivity, W/m-K 0.3
1.8 to 6.5
Thermal Diffusivity, mm2/s 0.14
0.73 to 3.9
Thermal Expansion, µm/m-K 8.0
2.0 to 6.6