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Grade A Lava vs. Ferrite

Both grade A lava and ferrite are oxide-based engineering ceramics. There are 11 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 grade A lava and the bottom bar is ferrite.

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa 76 to 170
430 to 2000
Flexural Strength, MPa 28 to 69
120 to 150
Tensile Strength: Ultimate (UTS), MPa 6.9 to 21
48 to 71

Thermal Properties

Specific Heat Capacity, J/kg-K 840
710 to 1050
Thermal Conductivity, W/m-K 2.0
3.9 to 6.3
Thermal Expansion, µm/m-K 2.5 to 3.3
8.0 to 9.3

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 MHz 5.3 to 5.8
12 to 270

Otherwise Unclassified Properties

Density, g/cm3 2.3 to 2.5
4.7 to 4.8

Common Calculations

Strength to Weight: Axial, points 0.77 to 2.5
2.8 to 4.1
Strength to Weight: Bending, points 3.2 to 7.3
6.2 to 8.0
Thermal Diffusivity, mm2/s 1.0
0.78 to 1.9