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R30155 Cobalt vs. C77100 Nickel Silver

R30155 cobalt belongs to the iron alloys classification, while C77100 nickel silver belongs to the copper alloys. There are 24 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 R30155 cobalt and the bottom bar is C77100 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
110
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 81
45
Tensile Strength: Ultimate (UTS), MPa 850
600
Tensile Strength: Yield (Proof), MPa 390
540

Thermal Properties

Latent Heat of Fusion, J/g 300
180
Maximum Temperature: Mechanical, °C 1100
150
Melting Completion (Liquidus), °C 1470
990
Melting Onset (Solidus), °C 1420
950
Specific Heat Capacity, J/kg-K 450
390
Thermal Conductivity, W/m-K 12
40
Thermal Expansion, µm/m-K 14
20

Otherwise Unclassified Properties

Base Metal Price, % relative 80
27
Density, g/cm3 8.5
8.1
Embodied Carbon, kg CO2/kg material 9.7
3.5
Embodied Energy, MJ/kg 150
56
Embodied Water, L/kg 300
310

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 370
1280
Stiffness to Weight: Axial, points 14
7.8
Stiffness to Weight: Bending, points 23
20
Strength to Weight: Axial, points 28
21
Strength to Weight: Bending, points 24
20
Thermal Diffusivity, mm2/s 3.2
13
Thermal Shock Resistance, points 21
19

Alloy Composition

Carbon (C), % 0.080 to 0.16
0
Chromium (Cr), % 20 to 22.5
0
Cobalt (Co), % 18.5 to 21
0
Copper (Cu), % 0
52 to 56
Iron (Fe), % 24.3 to 36.2
0
Lead (Pb), % 0
0 to 0.030
Manganese (Mn), % 1.0 to 2.0
0 to 0.9
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 19 to 21
9.0 to 12
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0 to 0.2
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Tantalum (Ta), % 0.75 to 1.3
0
Tungsten (W), % 2.0 to 3.0
0
Zinc (Zn), % 0
30.6 to 39
Residuals, % 0
0 to 0.5