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Grade 15 Babbitt Metal vs. R31538 Cobalt

Grade 15 Babbitt Metal belongs to the otherwise unclassified metals classification, while R31538 cobalt belongs to the cobalt alloys. There are 14 material properties with values for both materials. Properties with values for just one material (17, in this case) are not shown.

For each property being compared, the top bar is grade 15 Babbitt Metal and the bottom bar is R31538 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 23
220
Poisson's Ratio 0.4
0.29
Shear Modulus, GPa 8.2
86

Thermal Properties

Latent Heat of Fusion, J/g 46
320
Melting Completion (Liquidus), °C 280
1360
Melting Onset (Solidus), °C 250
1290
Specific Heat Capacity, J/kg-K 140
450
Thermal Expansion, µm/m-K 26
13

Otherwise Unclassified Properties

Density, g/cm3 10
8.4
Embodied Carbon, kg CO2/kg material 3.6
8.1
Embodied Energy, MJ/kg 47
110
Embodied Water, L/kg 840
530

Common Calculations

Stiffness to Weight: Axial, points 1.2
15
Stiffness to Weight: Bending, points 9.0
24

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0
Antimony (Sb), % 14.5 to 17.5
0
Arsenic (As), % 0.8 to 1.4
0
Bismuth (Bi), % 0 to 0.1
0
Cadmium (Cd), % 0 to 0.050
0
Carbon (C), % 0
0.15 to 0.35
Chromium (Cr), % 0
26 to 30
Cobalt (Co), % 0
58.7 to 68.9
Copper (Cu), % 0 to 0.6
0
Iron (Fe), % 0 to 0.1
0 to 0.75
Lead (Pb), % 79 to 83.9
0
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
5.0 to 7.0
Nickel (Ni), % 0
0 to 1.0
Nitrogen (N), % 0
0 to 0.25
Silicon (Si), % 0
0 to 1.0
Tin (Sn), % 0.8 to 1.2
0
Zinc (Zn), % 0 to 0.0050
0