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R31538 Cobalt vs. C66100 Bronze

R31538 cobalt belongs to the cobalt alloys classification, while C66100 bronze belongs to the copper 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 R31538 cobalt and the bottom bar is C66100 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
120
Elongation at Break, % 13 to 23
8.0 to 40
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 86
43
Tensile Strength: Ultimate (UTS), MPa 1020 to 1360
410 to 790
Tensile Strength: Yield (Proof), MPa 580 to 930
120 to 430

Thermal Properties

Latent Heat of Fusion, J/g 320
260
Melting Completion (Liquidus), °C 1360
1050
Melting Onset (Solidus), °C 1290
1000
Specific Heat Capacity, J/kg-K 450
400
Thermal Conductivity, W/m-K 13
34
Thermal Expansion, µm/m-K 13
17

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.7
Embodied Carbon, kg CO2/kg material 8.1
2.6
Embodied Energy, MJ/kg 110
42
Embodied Water, L/kg 530
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 200
53 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 750 to 1920
60 to 790
Stiffness to Weight: Axial, points 15
7.4
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 34 to 45
13 to 25
Strength to Weight: Bending, points 27 to 32
14 to 22
Thermal Diffusivity, mm2/s 3.5
9.7
Thermal Shock Resistance, points 25 to 33
15 to 29

Alloy Composition


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Carbon (C), % 0.15 to 0.35
0
Chromium (Cr), % 26 to 30
0
Cobalt (Co), % 58.7 to 68.9
0
Copper (Cu), % 0
92 to 97
Iron (Fe), % 0 to 0.75
0 to 0.25
Lead (Pb), % 0
0.2 to 0.8
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
0
Nitrogen (N), % 0 to 0.25
0
Silicon (Si), % 0 to 1.0
2.8 to 3.5
Zinc (Zn), % 0
0 to 1.5
Residuals, % 0
0 to 0.5