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Alumina vs. Grade 2 Babbitt Metal

Alumina and grade 2 Babbitt Metal belong to fundamentally different material chemistries. Alumina is a ceramic material, while grade 2 Babbitt Metal is a metal. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 9 material properties with values for both materials. Properties with values for just one material (27, 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 alumina and the bottom bar is grade 2 Babbitt Metal.

Metric UnitsUS Customary Units

Material Properties

Compressive (Crushing) Strength, MPa 1920 to 2750
100
Density, g/cm3 3.4 to 4.1
7.3
Elastic (Young's, Tensile) Modulus, GPa 220 to 370
53
Melting Onset (Solidus), °C 2040
240
Poisson's Ratio 0.22 to 0.24
0.35
Specific Heat Capacity, J/kg-K 870 to 940
230
Stiffness to Weight: Axial, points 35 to 53
4.0
Stiffness to Weight: Bending, points 57 to 62
17
Thermal Expansion, µm/m-K 6.7 to 8.2
21