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R31539 Cobalt vs. C93700 Bronze

R31539 cobalt belongs to the cobalt alloys classification, while C93700 bronze belongs to the copper alloys. There are 27 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 R31539 cobalt and the bottom bar is C93700 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
99
Elongation at Break, % 13 to 22
20
Fatigue Strength, MPa 310 to 480
90
Poisson's Ratio 0.29
0.35
Shear Modulus, GPa 86
37
Tensile Strength: Ultimate (UTS), MPa 1000 to 1340
240
Tensile Strength: Yield (Proof), MPa 590 to 940
130

Thermal Properties

Latent Heat of Fusion, J/g 320
170
Melting Completion (Liquidus), °C 1360
930
Melting Onset (Solidus), °C 1290
760
Specific Heat Capacity, J/kg-K 450
350
Thermal Conductivity, W/m-K 13
47
Thermal Expansion, µm/m-K 13
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
10
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
10

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.9
Embodied Carbon, kg CO2/kg material 8.2
3.5
Embodied Energy, MJ/kg 110
57
Embodied Water, L/kg 530
390

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 190
40
Resilience: Unit (Modulus of Resilience), kJ/m3 780 to 2000
79
Stiffness to Weight: Axial, points 15
6.2
Stiffness to Weight: Bending, points 24
17
Strength to Weight: Axial, points 33 to 44
7.5
Strength to Weight: Bending, points 27 to 32
9.6
Thermal Diffusivity, mm2/s 3.5
15
Thermal Shock Resistance, points 24 to 32
9.4

Alloy Composition


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Aluminum (Al), % 0.3 to 1.0
0 to 0.0050
Antimony (Sb), % 0
0 to 0.5
Carbon (C), % 0 to 0.14
0
Chromium (Cr), % 26 to 30
0
Cobalt (Co), % 57.7 to 68.7
0
Copper (Cu), % 0
78 to 82
Iron (Fe), % 0 to 0.75
0 to 0.15
Lanthanum (La), % 0.030 to 0.2
0
Lead (Pb), % 0
8.0 to 11
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
0 to 1.0
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 0 to 1.0
0 to 0.0050
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
9.0 to 11
Zinc (Zn), % 0
0 to 0.8
Residuals, % 0
0 to 1.0