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R31539 Cobalt vs. C14520 Copper

R31539 cobalt belongs to the cobalt alloys classification, while C14520 copper 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 C14520 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
120
Elongation at Break, % 13 to 22
9.0 to 9.6
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 86
43
Tensile Strength: Ultimate (UTS), MPa 1000 to 1340
290 to 330
Tensile Strength: Yield (Proof), MPa 590 to 940
230 to 250

Thermal Properties

Latent Heat of Fusion, J/g 320
210
Melting Completion (Liquidus), °C 1360
1080
Melting Onset (Solidus), °C 1290
1050
Specific Heat Capacity, J/kg-K 450
390
Thermal Conductivity, W/m-K 13
320
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
85
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
85

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.9
Embodied Carbon, kg CO2/kg material 8.2
2.6
Embodied Energy, MJ/kg 110
42
Embodied Water, L/kg 530
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 190
24 to 29
Resilience: Unit (Modulus of Resilience), kJ/m3 780 to 2000
240 to 280
Stiffness to Weight: Axial, points 15
7.2
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 33 to 44
9.0 to 10
Strength to Weight: Bending, points 27 to 32
11 to 12
Thermal Diffusivity, mm2/s 3.5
94
Thermal Shock Resistance, points 24 to 32
10 to 12

Alloy Composition

Aluminum (Al), % 0.3 to 1.0
0
Carbon (C), % 0 to 0.14
0
Chromium (Cr), % 26 to 30
0
Cobalt (Co), % 57.7 to 68.7
0
Copper (Cu), % 0
99.2 to 99.596
Iron (Fe), % 0 to 0.75
0
Lanthanum (La), % 0.030 to 0.2
0
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
0
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0
0.0040 to 0.020
Silicon (Si), % 0 to 1.0
0
Tellurium (Te), % 0
0.4 to 0.7