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R31539 Cobalt vs. C72150 Copper-nickel

R31539 cobalt belongs to the cobalt alloys classification, while C72150 copper-nickel belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is R31539 cobalt and the bottom bar is C72150 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
150
Elongation at Break, % 13 to 22
29
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 86
55
Tensile Strength: Ultimate (UTS), MPa 1000 to 1340
490
Tensile Strength: Yield (Proof), MPa 590 to 940
210

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Melting Completion (Liquidus), °C 1360
1210
Melting Onset (Solidus), °C 1290
1250
Specific Heat Capacity, J/kg-K 450
410
Thermal Conductivity, W/m-K 13
22
Thermal Expansion, µm/m-K 13
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
3.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
3.6

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.9
Embodied Carbon, kg CO2/kg material 8.2
6.1
Embodied Energy, MJ/kg 110
88
Embodied Water, L/kg 530
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 190
120
Resilience: Unit (Modulus of Resilience), kJ/m3 780 to 2000
150
Stiffness to Weight: Axial, points 15
9.1
Stiffness to Weight: Bending, points 24
20
Strength to Weight: Axial, points 33 to 44
15
Strength to Weight: Bending, points 27 to 32
15
Thermal Diffusivity, mm2/s 3.5
6.0
Thermal Shock Resistance, points 24 to 32
18

Alloy Composition

Aluminum (Al), % 0.3 to 1.0
0
Carbon (C), % 0 to 0.14
0 to 0.1
Chromium (Cr), % 26 to 30
0
Cobalt (Co), % 57.7 to 68.7
0
Copper (Cu), % 0
52.5 to 57
Iron (Fe), % 0 to 0.75
0 to 0.1
Lanthanum (La), % 0.030 to 0.2
0
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0 to 1.0
0 to 0.050
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
43 to 46
Nitrogen (N), % 0 to 0.25
0
Silicon (Si), % 0 to 1.0
0 to 0.5
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.5