Grade 3 Babbitt Metal vs. R31538 Cobalt

Grade 3 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 3 Babbitt Metal and the bottom bar is R31538 cobalt.

Grade 3 (L13840) Tin-Base Babbitt Metal High Carbon Co-28Cr-6Mo Alloy (ASTM F1537 Alloy 2, ISO 5832-12 Alloy 2, R31538)

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		56
Elastic (Young's, Tensile) Modulus, GPa		220

Poisson's Ratio		0.35
Poisson's Ratio		0.29

Shear Modulus, GPa		21
Shear Modulus, GPa		86

Tensile Strength: Yield (Proof), MPa		46
Tensile Strength: Yield (Proof), MPa		580 to 930

Thermal Properties

Latent Heat of Fusion, J/g		79
Latent Heat of Fusion, J/g		320

Melting Completion (Liquidus), °C		420
Melting Completion (Liquidus), °C		1360

Melting Onset (Solidus), °C		240
Melting Onset (Solidus), °C		1290

Specific Heat Capacity, J/kg-K		230
Specific Heat Capacity, J/kg-K		450

Thermal Expansion, µm/m-K		21
Thermal Expansion, µm/m-K		13

Otherwise Unclassified Properties

Density, g/cm³		7.4
Density, g/cm³		8.4

Embodied Carbon, kg CO₂/kg material		12
Embodied Carbon, kg CO₂/kg material		8.1

Embodied Energy, MJ/kg		200
Embodied Energy, MJ/kg		110

Embodied Water, L/kg		1210
Embodied Water, L/kg		530

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m³		19
Resilience: Unit (Modulus of Resilience), kJ/m³		750 to 1920

Stiffness to Weight: Axial, points		4.2
Stiffness to Weight: Axial, points		15

Stiffness to Weight: Bending, points		17
Stiffness to Weight: Bending, points		24

Alloy Composition

Aluminum (Al), %		0 to 0.0050
Aluminum (Al), %		0

Antimony (Sb), %		7.5 to 8.5
Antimony (Sb), %		0

Arsenic (As), %		0 to 0.1
Arsenic (As), %		0

Bismuth (Bi), %		0 to 0.080
Bismuth (Bi), %		0

Cadmium (Cd), %		0 to 0.050
Cadmium (Cd), %		0

Carbon (C), %		0
Carbon (C), %		0.15 to 0.35

Chromium (Cr), %		0
Chromium (Cr), %		26 to 30

Cobalt (Co), %		0
Cobalt (Co), %		58.7 to 68.9

Copper (Cu), %		7.5 to 8.5
Copper (Cu), %		0

Iron (Fe), %		0 to 0.080
Iron (Fe), %		0 to 0.75

Lead (Pb), %		0 to 0.35
Lead (Pb), %		0

Manganese (Mn), %		0
Manganese (Mn), %		0 to 1.0

Molybdenum (Mo), %		0
Molybdenum (Mo), %		5.0 to 7.0

Nickel (Ni), %		0
Nickel (Ni), %		0 to 1.0

Nitrogen (N), %		0
Nitrogen (N), %		0 to 0.25

Silicon (Si), %		0
Silicon (Si), %		0 to 1.0

Tin (Sn), %		82.3 to 85
Tin (Sn), %		0

Zinc (Zn), %		0 to 0.0050
Zinc (Zn), %		0