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C77600 Nickel Silver vs. R31539 Cobalt

C77600 nickel silver belongs to the copper alloys classification, while R31539 cobalt belongs to the cobalt alloys. There are 24 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 C77600 nickel silver and the bottom bar is R31539 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
220
Elongation at Break, % 30
13 to 22
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 43
86
Tensile Strength: Ultimate (UTS), MPa 630
1000 to 1340
Tensile Strength: Yield (Proof), MPa 320
590 to 940

Thermal Properties

Latent Heat of Fusion, J/g 180
320
Melting Completion (Liquidus), °C 830
1360
Melting Onset (Solidus), °C 790
1290
Specific Heat Capacity, J/kg-K 390
450
Thermal Expansion, µm/m-K 20
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 31
2.1

Otherwise Unclassified Properties

Density, g/cm3 7.9
8.4
Embodied Carbon, kg CO2/kg material 3.7
8.2
Embodied Energy, MJ/kg 60
110
Embodied Water, L/kg 310
530

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
140 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 470
780 to 2000
Stiffness to Weight: Axial, points 7.9
15
Stiffness to Weight: Bending, points 20
24
Strength to Weight: Axial, points 22
33 to 44
Strength to Weight: Bending, points 21
27 to 32
Thermal Shock Resistance, points 20
24 to 32

Alloy Composition

Aluminum (Al), % 0
0.3 to 1.0
Carbon (C), % 0
0 to 0.14
Chromium (Cr), % 0
26 to 30
Cobalt (Co), % 0
57.7 to 68.7
Copper (Cu), % 42 to 45
0
Iron (Fe), % 0 to 0.2
0 to 0.75
Lanthanum (La), % 0
0.030 to 0.2
Lead (Pb), % 0 to 0.25
0
Manganese (Mn), % 0 to 0.25
0 to 1.0
Molybdenum (Mo), % 0
5.0 to 7.0
Nickel (Ni), % 12 to 14
0 to 1.0
Nitrogen (N), % 0
0 to 0.25
Silicon (Si), % 0
0 to 1.0
Tin (Sn), % 0 to 0.15
0
Zinc (Zn), % 39.7 to 46
0
Residuals, % 0 to 0.5
0