Engineering Porcelain vs. Yttria

Both engineering porcelain and yttria 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 engineering porcelain and the bottom bar is yttria.

Metric UnitsUS Customary Units

Material Properties

Compressive (Crushing) Strength, MPa		590
Compressive (Crushing) Strength, MPa		390

Density, g/cm³		2.3 to 3.0
Density, g/cm³		5.0

Elastic (Young's, Tensile) Modulus, GPa		67 to 150
Elastic (Young's, Tensile) Modulus, GPa		120

Maximum Temperature: Mechanical, °C		1170
Maximum Temperature: Mechanical, °C		2000

Specific Heat Capacity, J/kg-K		600 to 1000
Specific Heat Capacity, J/kg-K		440

Stiffness to Weight: Axial, points		16 to 29
Stiffness to Weight: Axial, points		13

Stiffness to Weight: Bending, points		49 to 65
Stiffness to Weight: Bending, points		32

Thermal Conductivity, W/m-K		1.8 to 6.5
Thermal Conductivity, W/m-K		0.3

Thermal Diffusivity, mm²/s		0.73 to 3.9
Thermal Diffusivity, mm²/s		0.14

Thermal Expansion, µm/m-K		2.0 to 6.6
Thermal Expansion, µm/m-K		8.0

Engineering Porcelain vs. Yttria

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