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C74400 Nickel Silver vs. R30012 Cobalt

C74400 nickel silver belongs to the copper alloys classification, while R30012 cobalt belongs to the cobalt alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is C74400 nickel silver and the bottom bar is R30012 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
220
Elongation at Break, % 43
1.0
Poisson's Ratio 0.31
0.28
Shear Modulus, GPa 39
86
Tensile Strength: Ultimate (UTS), MPa 350
830
Tensile Strength: Yield (Proof), MPa 120
650

Thermal Properties

Latent Heat of Fusion, J/g 180
320
Melting Completion (Liquidus), °C 930
1470
Melting Onset (Solidus), °C 910
1280
Specific Heat Capacity, J/kg-K 390
440
Thermal Conductivity, W/m-K 120
15
Thermal Expansion, µm/m-K 20
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 29
1.8

Otherwise Unclassified Properties

Density, g/cm3 8.2
8.8
Embodied Carbon, kg CO2/kg material 2.9
8.3
Embodied Energy, MJ/kg 48
120
Embodied Water, L/kg 320
480

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
7.7
Resilience: Unit (Modulus of Resilience), kJ/m3 63
960
Stiffness to Weight: Axial, points 7.4
14
Stiffness to Weight: Bending, points 19
23
Strength to Weight: Axial, points 12
26
Strength to Weight: Bending, points 14
22
Thermal Diffusivity, mm2/s 37
3.8
Thermal Shock Resistance, points 12
23

Alloy Composition

Carbon (C), % 0
1.4 to 2.0
Chromium (Cr), % 0
27 to 32
Cobalt (Co), % 0
47.5 to 64.1
Copper (Cu), % 62 to 66
0
Iron (Fe), % 0 to 0.050
0 to 3.0
Lead (Pb), % 0 to 0.050
0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 2.0 to 4.0
0 to 3.0
Silicon (Si), % 0
0 to 2.0
Tungsten (W), % 0
7.5 to 9.5
Zinc (Zn), % 29.6 to 36
0
Residuals, % 0 to 0.3
0