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R30075 Cobalt vs. C77000 Nickel Silver

R30075 cobalt belongs to the cobalt alloys classification, while C77000 nickel silver belongs to the copper alloys. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is R30075 cobalt and the bottom bar is C77000 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210 to 250
120
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 82 to 98
46
Tensile Strength: Ultimate (UTS), MPa 780 to 1280
420 to 800

Thermal Properties

Latent Heat of Fusion, J/g 320
200
Melting Completion (Liquidus), °C 1360
1050
Melting Onset (Solidus), °C 1290
1000
Specific Heat Capacity, J/kg-K 450
400
Thermal Conductivity, W/m-K 13
29
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
5.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
6.0

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.3
Embodied Carbon, kg CO2/kg material 8.1
4.1
Embodied Energy, MJ/kg 110
63
Embodied Water, L/kg 530
300

Common Calculations

Stiffness to Weight: Axial, points 14 to 17
8.1
Stiffness to Weight: Bending, points 24 to 25
20
Strength to Weight: Axial, points 26 to 42
14 to 27
Strength to Weight: Bending, points 22 to 31
15 to 23
Thermal Diffusivity, mm2/s 3.5
8.8
Thermal Shock Resistance, points 21 to 29
15 to 28

Alloy Composition

Aluminum (Al), % 0 to 0.1
0
Boron (B), % 0 to 0.010
0
Carbon (C), % 0 to 0.35
0
Chromium (Cr), % 27 to 30
0
Cobalt (Co), % 58.7 to 68
0
Copper (Cu), % 0
53.5 to 56.5
Iron (Fe), % 0 to 0.75
0 to 0.25
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0 to 1.0
0 to 0.5
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 0.5
16.5 to 19.5
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0 to 0.1
0
Tungsten (W), % 0 to 0.2
0
Zinc (Zn), % 0
22.7 to 30
Residuals, % 0
0 to 0.5