Grade 8 Babbitt Metal vs. R30001 Cobalt

Grade 8 Babbitt Metal belongs to the otherwise unclassified metals classification, while R30001 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 8 Babbitt Metal and the bottom bar is R30001 cobalt.

Grade 8 (L53565) Lead-Base Babbitt Metal UNS R30001 Co-Cr-W Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa		110
Compressive (Crushing) Strength, MPa		1930

Elastic (Young's, Tensile) Modulus, GPa		24
Elastic (Young's, Tensile) Modulus, GPa		220

Poisson's Ratio		0.41
Poisson's Ratio		0.28

Shear Modulus, GPa		8.5
Shear Modulus, GPa		86

Thermal Properties

Latent Heat of Fusion, J/g		46
Latent Heat of Fusion, J/g		310

Melting Completion (Liquidus), °C		270
Melting Completion (Liquidus), °C		1530

Melting Onset (Solidus), °C		240
Melting Onset (Solidus), °C		1260

Specific Heat Capacity, J/kg-K		150
Specific Heat Capacity, J/kg-K		430

Thermal Conductivity, W/m-K		24
Thermal Conductivity, W/m-K		15

Thermal Expansion, µm/m-K		24
Thermal Expansion, µm/m-K		11

Otherwise Unclassified Properties

Density, g/cm³		10
Density, g/cm³		9.0

Embodied Carbon, kg CO₂/kg material		3.9
Embodied Carbon, kg CO₂/kg material		8.9

Embodied Energy, MJ/kg		53
Embodied Energy, MJ/kg		130

Embodied Water, L/kg		840
Embodied Water, L/kg		460

Common Calculations

Stiffness to Weight: Axial, points		1.3
Stiffness to Weight: Axial, points		14

Stiffness to Weight: Bending, points		9.2
Stiffness to Weight: Bending, points		22

Thermal Diffusivity, mm²/s		16
Thermal Diffusivity, mm²/s		3.7

Alloy Composition

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

Antimony (Sb), %		14 to 16
Antimony (Sb), %		0

Arsenic (As), %		0.3 to 0.6
Arsenic (As), %		0

Bismuth (Bi), %		0 to 0.1
Bismuth (Bi), %		0

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

Carbon (C), %		0
Carbon (C), %		2.0 to 3.0

Chromium (Cr), %		0
Chromium (Cr), %		28 to 32

Cobalt (Co), %		0
Cobalt (Co), %		43 to 59

Copper (Cu), %		0 to 0.5
Copper (Cu), %		0

Iron (Fe), %		0 to 0.1
Iron (Fe), %		0 to 3.0

Lead (Pb), %		77.1 to 81.2
Lead (Pb), %		0

Molybdenum (Mo), %		0
Molybdenum (Mo), %		0 to 1.0

Nickel (Ni), %		0
Nickel (Ni), %		0 to 3.0

Silicon (Si), %		0
Silicon (Si), %		0 to 2.0

Tin (Sn), %		4.5 to 5.5
Tin (Sn), %		0

Tungsten (W), %		0
Tungsten (W), %		11 to 13

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