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R31538 Cobalt vs. Soda-lime Glass

R31538 cobalt and soda-lime glass belong to fundamentally different material chemistries. R31538 cobalt is a metal, while soda-lime glass is a ceramic material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 14 material properties with values for both materials. Properties with values for just one material (21, 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 R31538 cobalt and the bottom bar is soda-lime glass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
70 to 71
Poisson's Ratio 0.29
0.23
Shear Modulus, GPa 86
29
Tensile Strength: Ultimate (UTS), MPa 1020 to 1360
41 to 180

Thermal Properties

Specific Heat Capacity, J/kg-K 450
720 to 800
Thermal Conductivity, W/m-K 13
1.0 to 1.1
Thermal Expansion, µm/m-K 13
8.8 to 9.0

Otherwise Unclassified Properties

Density, g/cm3 8.4
2.4

Common Calculations

Stiffness to Weight: Axial, points 15
16
Stiffness to Weight: Bending, points 24
56
Strength to Weight: Axial, points 34 to 45
4.6 to 20
Strength to Weight: Bending, points 27 to 32
11 to 28
Thermal Diffusivity, mm2/s 3.5
0.51 to 0.6
Thermal Shock Resistance, points 25 to 33
4.7 to 20