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Borosilicate Glass vs. Grade 15 Babbitt Metal

Borosilicate glass and grade 15 Babbitt Metal belong to fundamentally different material chemistries. Borosilicate glass is a ceramic material, while grade 15 Babbitt Metal is a metal. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 8 material properties with values for both materials. Properties with values for just one material (28, 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 borosilicate glass and the bottom bar is grade 15 Babbitt Metal.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 2.2 to 2.6
10
Elastic (Young's, Tensile) Modulus, GPa 67 to 80
23
Melting Onset (Solidus), °C 560
250
Poisson's Ratio 0.21
0.4
Specific Heat Capacity, J/kg-K 830
140
Stiffness to Weight: Axial, points 15 to 17
1.2
Stiffness to Weight: Bending, points 55 to 61
9.0
Thermal Expansion, µm/m-K 3.3 to 5.1
26