R30001 Cobalt vs. C66100 Bronze

R30001 cobalt belongs to the cobalt alloys classification, while C66100 bronze belongs to the copper alloys. There are 21 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is R30001 cobalt and the bottom bar is C66100 bronze.

UNS R30001 Co-Cr-W Alloy UNS C66100 Leaded Silicon Bronze

Metric UnitsUS Customary Units

Mechanical Properties

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

Elongation at Break, %		1.0
Elongation at Break, %		8.0 to 40

Poisson's Ratio		0.28
Poisson's Ratio		0.34

Shear Modulus, GPa		86
Shear Modulus, GPa		43

Tensile Strength: Ultimate (UTS), MPa		620
Tensile Strength: Ultimate (UTS), MPa		410 to 790

Thermal Properties

Latent Heat of Fusion, J/g		310
Latent Heat of Fusion, J/g		260

Melting Completion (Liquidus), °C		1530
Melting Completion (Liquidus), °C		1050

Melting Onset (Solidus), °C		1260
Melting Onset (Solidus), °C		1000

Specific Heat Capacity, J/kg-K		430
Specific Heat Capacity, J/kg-K		400

Thermal Conductivity, W/m-K		15
Thermal Conductivity, W/m-K		34

Thermal Expansion, µm/m-K		11
Thermal Expansion, µm/m-K		17

Otherwise Unclassified Properties

Density, g/cm³		9.0
Density, g/cm³		8.7

Embodied Carbon, kg CO₂/kg material		8.9
Embodied Carbon, kg CO₂/kg material		2.6

Embodied Energy, MJ/kg		130
Embodied Energy, MJ/kg		42

Embodied Water, L/kg		460
Embodied Water, L/kg		300

Common Calculations

Stiffness to Weight: Axial, points		14
Stiffness to Weight: Axial, points		7.4

Stiffness to Weight: Bending, points		22
Stiffness to Weight: Bending, points		19

Strength to Weight: Axial, points		19
Strength to Weight: Axial, points		13 to 25

Strength to Weight: Bending, points		18
Strength to Weight: Bending, points		14 to 22

Thermal Diffusivity, mm²/s		3.7
Thermal Diffusivity, mm²/s		9.7

Thermal Shock Resistance, points		19
Thermal Shock Resistance, points		15 to 29

Alloy Composition

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

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

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

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

Iron (Fe), %		0 to 3.0
Iron (Fe), %		0 to 0.25

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

Manganese (Mn), %		0
Manganese (Mn), %		0 to 1.5

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

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

Silicon (Si), %		0 to 2.0
Silicon (Si), %		2.8 to 3.5

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

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

Residuals, %		0
Residuals, %		0 to 0.5