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Grade 7 Babbitt Metal vs. R30816 Cobalt

Grade 7 Babbitt Metal belongs to the otherwise unclassified metals classification, while R30816 cobalt belongs to the cobalt alloys. There are 17 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is grade 7 Babbitt Metal and the bottom bar is R30816 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 23
280
Elastic (Young's, Tensile) Modulus, GPa 26
210
Poisson's Ratio 0.4
0.3
Shear Modulus, GPa 9.1
81
Tensile Strength: Yield (Proof), MPa 25
460

Thermal Properties

Latent Heat of Fusion, J/g 48
300
Melting Completion (Liquidus), °C 270
1540
Melting Onset (Solidus), °C 240
1460
Specific Heat Capacity, J/kg-K 150
420
Thermal Expansion, µm/m-K 26
12

Otherwise Unclassified Properties

Density, g/cm3 10
9.1
Embodied Carbon, kg CO2/kg material 4.4
20
Embodied Energy, MJ/kg 62
320
Embodied Water, L/kg 880
440

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 12
510
Stiffness to Weight: Axial, points 1.4
13
Stiffness to Weight: Bending, points 9.6
22

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0
Antimony (Sb), % 14 to 16
0
Arsenic (As), % 0.3 to 0.6
0
Bismuth (Bi), % 0 to 0.1
0
Cadmium (Cd), % 0 to 0.050
0
Carbon (C), % 0
0.32 to 0.42
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
40 to 49.8
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 0 to 0.1
0 to 5.0
Lead (Pb), % 71.9 to 76.4
0
Manganese (Mn), % 0
1.0 to 2.0
Molybdenum (Mo), % 0
3.5 to 4.5
Nickel (Ni), % 0
19 to 21
Niobium (Nb), % 0
3.5 to 4.5
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tantalum (Ta), % 0
3.5 to 4.5
Tin (Sn), % 9.3 to 10.7
0
Tungsten (W), % 0
3.5 to 4.5
Zinc (Zn), % 0 to 0.0050
0