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R31538 Cobalt vs. Grade 8 Babbitt Metal

R31538 cobalt belongs to the cobalt alloys classification, while grade 8 Babbitt Metal belongs to the otherwise unclassified metals. There are 18 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is R31538 cobalt and the bottom bar is grade 8 Babbitt Metal.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
24
Poisson's Ratio 0.29
0.41
Shear Modulus, GPa 86
8.5
Tensile Strength: Yield (Proof), MPa 580 to 930
23

Thermal Properties

Latent Heat of Fusion, J/g 320
46
Melting Completion (Liquidus), °C 1360
270
Melting Onset (Solidus), °C 1290
240
Specific Heat Capacity, J/kg-K 450
150
Thermal Conductivity, W/m-K 13
24
Thermal Expansion, µm/m-K 13
24

Otherwise Unclassified Properties

Density, g/cm3 8.4
10
Embodied Carbon, kg CO2/kg material 8.1
3.9
Embodied Energy, MJ/kg 110
53
Embodied Water, L/kg 530
840

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 750 to 1920
11
Stiffness to Weight: Axial, points 15
1.3
Stiffness to Weight: Bending, points 24
9.2
Thermal Diffusivity, mm2/s 3.5
16

Alloy Composition

Aluminum (Al), % 0
0 to 0.0050
Antimony (Sb), % 0
14 to 16
Arsenic (As), % 0
0.3 to 0.6
Bismuth (Bi), % 0
0 to 0.1
Cadmium (Cd), % 0
0 to 0.050
Carbon (C), % 0.15 to 0.35
0
Chromium (Cr), % 26 to 30
0
Cobalt (Co), % 58.7 to 68.9
0
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 0 to 0.75
0 to 0.1
Lead (Pb), % 0
77.1 to 81.2
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
0
Nitrogen (N), % 0 to 0.25
0
Silicon (Si), % 0 to 1.0
0
Tin (Sn), % 0
4.5 to 5.5
Zinc (Zn), % 0
0 to 0.0050