R30021 Cobalt vs. Grade 7 Babbitt Metal

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

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

Metric UnitsUS Customary Units

Mechanical Properties

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

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

Poisson's Ratio		0.29
Poisson's Ratio		0.4

Shear Modulus, GPa		86
Shear Modulus, GPa		9.1

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

Thermal Properties

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

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

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

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

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

Otherwise Unclassified Properties

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

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

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

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

Common Calculations

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

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

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

Alloy Composition

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

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

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

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

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

Carbon (C), %		0.2 to 0.35
Carbon (C), %		0

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

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

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

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

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

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

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

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

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

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