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C72150 Copper-nickel vs. R30008 Cobalt

C72150 copper-nickel belongs to the copper alloys classification, while R30008 cobalt belongs to the cobalt alloys. There are 22 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is C72150 copper-nickel and the bottom bar is R30008 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 150
210
Elongation at Break, % 29
1.1 to 73
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 55
83
Tensile Strength: Ultimate (UTS), MPa 490
950 to 1700
Tensile Strength: Yield (Proof), MPa 210
500 to 1080

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Melting Completion (Liquidus), °C 1210
1400
Melting Onset (Solidus), °C 1250
1330
Specific Heat Capacity, J/kg-K 410
450
Thermal Expansion, µm/m-K 14
13

Otherwise Unclassified Properties

Base Metal Price, % relative 45
95
Density, g/cm3 8.9
8.4
Embodied Carbon, kg CO2/kg material 6.1
8.1
Embodied Energy, MJ/kg 88
110
Embodied Water, L/kg 270
400

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 150
590 to 2720
Stiffness to Weight: Axial, points 9.1
14
Stiffness to Weight: Bending, points 20
24
Strength to Weight: Axial, points 15
31 to 56
Strength to Weight: Bending, points 15
25 to 37
Thermal Shock Resistance, points 18
25 to 44

Alloy Composition


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Boron (B), % 0
0 to 0.0010
Carbon (C), % 0 to 0.1
0 to 0.15
Chromium (Cr), % 0
18.5 to 21.5
Cobalt (Co), % 0
39 to 42
Copper (Cu), % 52.5 to 57
0
Iron (Fe), % 0 to 0.1
7.6 to 20
Lead (Pb), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.050
1.0 to 2.0
Molybdenum (Mo), % 0
6.5 to 7.5
Nickel (Ni), % 43 to 46
15 to 18
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0 to 0.5
0 to 1.2
Sulfur (S), % 0
0 to 0.015
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.5
0