Grade 7 Babbitt Metal vs. R30021 Cobalt

Grade 7 Babbitt Metal belongs to the otherwise unclassified metals classification, while R30021 cobalt belongs to the cobalt alloys. There are 17 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 grade 7 Babbitt Metal and the bottom bar is R30021 cobalt.

Grade 7 (L53585) Lead-Base Babbitt Metal UNS R30021 Co-Cr-W Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa		110
Compressive (Crushing) Strength, MPa		1300

Elastic (Young's, Tensile) Modulus, GPa		26
Elastic (Young's, Tensile) Modulus, GPa		220

Poisson's Ratio		0.4
Poisson's Ratio		0.29

Shear Modulus, GPa		9.1
Shear Modulus, GPa		86

Tensile Strength: Yield (Proof), MPa		25
Tensile Strength: Yield (Proof), MPa		500

Thermal Properties

Latent Heat of Fusion, J/g		48
Latent Heat of Fusion, J/g		330

Melting Completion (Liquidus), °C		270
Melting Completion (Liquidus), °C		1350

Melting Onset (Solidus), °C		240
Melting Onset (Solidus), °C		1190

Specific Heat Capacity, J/kg-K		150
Specific Heat Capacity, J/kg-K		450

Thermal Expansion, µm/m-K		26
Thermal Expansion, µm/m-K		11

Otherwise Unclassified Properties

Density, g/cm³		10
Density, g/cm³		8.4

Embodied Carbon, kg CO₂/kg material		4.4
Embodied Carbon, kg CO₂/kg material		8.0

Embodied Energy, MJ/kg		62
Embodied Energy, MJ/kg		110

Embodied Water, L/kg		880
Embodied Water, L/kg		520

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m³		12
Resilience: Unit (Modulus of Resilience), kJ/m³		570

Stiffness to Weight: Axial, points		1.4
Stiffness to Weight: Axial, points		15

Stiffness to Weight: Bending, points		9.6
Stiffness to Weight: Bending, points		24

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), %		0.2 to 0.35

Chromium (Cr), %		0
Chromium (Cr), %		26 to 29

Cobalt (Co), %		0
Cobalt (Co), %		61.7 to 67.3

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

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

Lead (Pb), %		71.9 to 76.4
Lead (Pb), %		0

Molybdenum (Mo), %		0
Molybdenum (Mo), %		4.5 to 6.0

Nickel (Ni), %		0
Nickel (Ni), %		2.0 to 3.0

Silicon (Si), %		0
Silicon (Si), %		0 to 1.5

Tin (Sn), %		9.3 to 10.7
Tin (Sn), %		0

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