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R31539 Cobalt vs. CC491K Bronze

R31539 cobalt belongs to the cobalt alloys classification, while CC491K bronze belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is R31539 cobalt and the bottom bar is CC491K bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
110
Elongation at Break, % 13 to 22
13
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 86
40
Tensile Strength: Ultimate (UTS), MPa 1000 to 1340
260
Tensile Strength: Yield (Proof), MPa 590 to 940
120

Thermal Properties

Latent Heat of Fusion, J/g 320
190
Melting Completion (Liquidus), °C 1360
980
Melting Onset (Solidus), °C 1290
900
Specific Heat Capacity, J/kg-K 450
370
Thermal Conductivity, W/m-K 13
71
Thermal Expansion, µm/m-K 13
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
15
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
15

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.9
Embodied Carbon, kg CO2/kg material 8.2
3.1
Embodied Energy, MJ/kg 110
51
Embodied Water, L/kg 530
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 190
27
Resilience: Unit (Modulus of Resilience), kJ/m3 780 to 2000
67
Stiffness to Weight: Axial, points 15
6.7
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 33 to 44
8.1
Strength to Weight: Bending, points 27 to 32
10
Thermal Diffusivity, mm2/s 3.5
22
Thermal Shock Resistance, points 24 to 32
9.3

Alloy Composition

Aluminum (Al), % 0.3 to 1.0
0 to 0.010
Antimony (Sb), % 0
0 to 0.25
Carbon (C), % 0 to 0.14
0
Chromium (Cr), % 26 to 30
0
Cobalt (Co), % 57.7 to 68.7
0
Copper (Cu), % 0
81 to 87
Iron (Fe), % 0 to 0.75
0 to 0.3
Lanthanum (La), % 0.030 to 0.2
0
Lead (Pb), % 0
4.0 to 6.0
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
0 to 2.0
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.1
Silicon (Si), % 0 to 1.0
0 to 0.010
Sulfur (S), % 0
0 to 0.1
Tin (Sn), % 0
4.0 to 6.0
Zinc (Zn), % 0
4.0 to 6.0