C66100 Bronze vs. R31539 Cobalt

C66100 bronze belongs to the copper alloys classification, while R31539 cobalt belongs to the cobalt alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is C66100 bronze and the bottom bar is R31539 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		120
Elastic (Young's, Tensile) Modulus, GPa		220

Elongation at Break, %		8.0 to 40
Elongation at Break, %		13 to 22

Poisson's Ratio		0.34
Poisson's Ratio		0.29

Shear Modulus, GPa		43
Shear Modulus, GPa		86

Tensile Strength: Ultimate (UTS), MPa		410 to 790
Tensile Strength: Ultimate (UTS), MPa		1000 to 1340

Tensile Strength: Yield (Proof), MPa		120 to 430
Tensile Strength: Yield (Proof), MPa		590 to 940

Thermal Properties

Latent Heat of Fusion, J/g		260
Latent Heat of Fusion, J/g		320

Melting Completion (Liquidus), °C		1050
Melting Completion (Liquidus), °C		1360

Melting Onset (Solidus), °C		1000
Melting Onset (Solidus), °C		1290

Specific Heat Capacity, J/kg-K		400
Specific Heat Capacity, J/kg-K		450

Thermal Conductivity, W/m-K		34
Thermal Conductivity, W/m-K		13

Thermal Expansion, µm/m-K		17
Thermal Expansion, µm/m-K		13

Otherwise Unclassified Properties

Density, g/cm³		8.7
Density, g/cm³		8.4

Embodied Carbon, kg CO₂/kg material		2.6
Embodied Carbon, kg CO₂/kg material		8.2

Embodied Energy, MJ/kg		42
Embodied Energy, MJ/kg		110

Embodied Water, L/kg		300
Embodied Water, L/kg		530

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		53 to 120
Resilience: Ultimate (Unit Rupture Work), MJ/m³		140 to 190

Resilience: Unit (Modulus of Resilience), kJ/m³		60 to 790
Resilience: Unit (Modulus of Resilience), kJ/m³		780 to 2000

Stiffness to Weight: Axial, points		7.4
Stiffness to Weight: Axial, points		15

Stiffness to Weight: Bending, points		19
Stiffness to Weight: Bending, points		24

Strength to Weight: Axial, points		13 to 25
Strength to Weight: Axial, points		33 to 44

Strength to Weight: Bending, points		14 to 22
Strength to Weight: Bending, points		27 to 32

Thermal Diffusivity, mm²/s		9.7
Thermal Diffusivity, mm²/s		3.5

Thermal Shock Resistance, points		15 to 29
Thermal Shock Resistance, points		24 to 32

Alloy Composition

Aluminum (Al), %		0
Aluminum (Al), %		0.3 to 1.0

Carbon (C), %		0
Carbon (C), %		0 to 0.14

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

Cobalt (Co), %		0
Cobalt (Co), %		57.7 to 68.7

Copper (Cu), %		92 to 97
Copper (Cu), %		0

Iron (Fe), %		0 to 0.25
Iron (Fe), %		0 to 0.75

Lanthanum (La), %		0
Lanthanum (La), %		0.030 to 0.2

Lead (Pb), %		0.2 to 0.8
Lead (Pb), %		0

Manganese (Mn), %		0 to 1.5
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), %		2.8 to 3.5
Silicon (Si), %		0 to 1.0

Zinc (Zn), %		0 to 1.5
Zinc (Zn), %		0

Residuals, %		0 to 0.5
Residuals, %		0