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Grade 2 Babbitt Metal vs. R31538 Cobalt

Grade 2 Babbitt Metal belongs to the otherwise unclassified metals classification, while R31538 cobalt belongs to the cobalt alloys. There are 16 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

For each property being compared, the top bar is grade 2 Babbitt Metal and the bottom bar is R31538 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 53
220
Poisson's Ratio 0.35
0.29
Shear Modulus, GPa 19
86
Tensile Strength: Yield (Proof), MPa 42
580 to 930

Thermal Properties

Latent Heat of Fusion, J/g 72
320
Melting Completion (Liquidus), °C 350
1360
Melting Onset (Solidus), °C 240
1290
Specific Heat Capacity, J/kg-K 230
450
Thermal Expansion, µm/m-K 21
13

Otherwise Unclassified Properties

Density, g/cm3 7.3
8.4
Embodied Carbon, kg CO2/kg material 12
8.1
Embodied Energy, MJ/kg 200
110
Embodied Water, L/kg 1240
530

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 17
750 to 1920
Stiffness to Weight: Axial, points 4.0
15
Stiffness to Weight: Bending, points 17
24

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0
Antimony (Sb), % 7.0 to 8.0
0
Arsenic (As), % 0 to 0.1
0
Bismuth (Bi), % 0 to 0.080
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), % 3.0 to 4.0
0
Iron (Fe), % 0 to 0.080
0 to 0.75
Lead (Pb), % 0 to 0.35
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), % 87.3 to 90
0
Zinc (Zn), % 0 to 0.0050
0