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C71640 Copper-nickel vs. EN 2.4964 Cobalt

C71640 copper-nickel belongs to the copper alloys classification, while EN 2.4964 cobalt belongs to the cobalt alloys. There are 24 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is C71640 copper-nickel and the bottom bar is EN 2.4964 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
220
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 52
86
Tensile Strength: Ultimate (UTS), MPa 490 to 630
960
Tensile Strength: Yield (Proof), MPa 190 to 460
390

Thermal Properties

Latent Heat of Fusion, J/g 240
290
Melting Completion (Liquidus), °C 1180
1630
Melting Onset (Solidus), °C 1120
1550
Specific Heat Capacity, J/kg-K 410
400
Thermal Conductivity, W/m-K 29
15
Thermal Expansion, µm/m-K 15
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
1.8

Otherwise Unclassified Properties

Density, g/cm3 8.9
9.6
Embodied Carbon, kg CO2/kg material 5.0
9.8
Embodied Energy, MJ/kg 73
140
Embodied Water, L/kg 280
450

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 750
340
Stiffness to Weight: Axial, points 8.7
13
Stiffness to Weight: Bending, points 20
21
Strength to Weight: Axial, points 15 to 20
28
Strength to Weight: Bending, points 16 to 18
23
Thermal Diffusivity, mm2/s 8.2
3.9
Thermal Shock Resistance, points 16 to 21
25

Alloy Composition


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Carbon (C), % 0
0.050 to 0.15
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
46.4 to 58
Copper (Cu), % 61.7 to 67.8
0
Iron (Fe), % 1.7 to 2.3
0 to 3.0
Lead (Pb), % 0 to 0.050
0
Manganese (Mn), % 1.5 to 2.5
0 to 2.0
Nickel (Ni), % 29 to 32
9.0 to 11
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0
0 to 0.4
Sulfur (S), % 0
0 to 0.015
Tungsten (W), % 0
14 to 16
Zinc (Zn), % 0 to 1.0
0
Residuals, % 0 to 0.5
0