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R31539 Cobalt vs. CC381H Copper-nickel

R31539 cobalt belongs to the cobalt alloys classification, while CC381H copper-nickel 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 CC381H copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
140
Elongation at Break, % 13 to 22
20
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 86
52
Tensile Strength: Ultimate (UTS), MPa 1000 to 1340
380
Tensile Strength: Yield (Proof), MPa 590 to 940
140

Thermal Properties

Latent Heat of Fusion, J/g 320
240
Melting Completion (Liquidus), °C 1360
1180
Melting Onset (Solidus), °C 1290
1120
Specific Heat Capacity, J/kg-K 450
410
Thermal Conductivity, W/m-K 13
30
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
6.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
6.9

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.9
Embodied Carbon, kg CO2/kg material 8.2
5.0
Embodied Energy, MJ/kg 110
73
Embodied Water, L/kg 530
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 190
60
Resilience: Unit (Modulus of Resilience), kJ/m3 780 to 2000
68
Stiffness to Weight: Axial, points 15
8.6
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 33 to 44
12
Strength to Weight: Bending, points 27 to 32
13
Thermal Diffusivity, mm2/s 3.5
8.4
Thermal Shock Resistance, points 24 to 32
13

Alloy Composition

Aluminum (Al), % 0.3 to 1.0
0 to 0.010
Carbon (C), % 0 to 0.14
0 to 0.030
Chromium (Cr), % 26 to 30
0
Cobalt (Co), % 57.7 to 68.7
0
Copper (Cu), % 0
64.5 to 69.9
Iron (Fe), % 0 to 0.75
0.5 to 1.5
Lanthanum (La), % 0.030 to 0.2
0
Lead (Pb), % 0
0 to 0.030
Manganese (Mn), % 0 to 1.0
0.6 to 1.2
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
29 to 31
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0 to 1.0
0 to 0.1
Sulfur (S), % 0
0 to 0.010
Zinc (Zn), % 0
0 to 0.5