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Grade 1 Babbitt Metal vs. R31537 Cobalt

Grade 1 Babbitt Metal belongs to the otherwise unclassified metals classification, while R31537 cobalt belongs to the cobalt alloys. There are 21 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is grade 1 Babbitt Metal and the bottom bar is R31537 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 53
220
Elongation at Break, % 34
14 to 23
Poisson's Ratio 0.35
0.29
Shear Modulus, GPa 20
87
Tensile Strength: Yield (Proof), MPa 30
590 to 940

Thermal Properties

Latent Heat of Fusion, J/g 70
320
Melting Completion (Liquidus), °C 370
1360
Melting Onset (Solidus), °C 220
1290
Specific Heat Capacity, J/kg-K 230
450
Thermal Conductivity, W/m-K 45
13
Thermal Expansion, µm/m-K 21
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 16
2.1

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 1160
530

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 8.6
780 to 1990
Stiffness to Weight: Axial, points 4.0
15
Stiffness to Weight: Bending, points 17
24
Thermal Diffusivity, mm2/s 26
3.4

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0
Antimony (Sb), % 4.0 to 5.0
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 to 0.14
Chromium (Cr), % 0
26 to 30
Cobalt (Co), % 0
58.9 to 69
Copper (Cu), % 4.0 to 5.0
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), % 89.3 to 92
0
Zinc (Zn), % 0 to 0.0050
0