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C75700 Nickel Silver vs. R30012 Cobalt

C75700 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 C75700 nickel silver and the bottom bar is R30012 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
220
Elongation at Break, % 3.2 to 22
1.0
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 45
86
Tensile Strength: Ultimate (UTS), MPa 590 to 610
830
Tensile Strength: Yield (Proof), MPa 470 to 580
650

Thermal Properties

Latent Heat of Fusion, J/g 200
320
Melting Completion (Liquidus), °C 1040
1470
Melting Onset (Solidus), °C 990
1280
Specific Heat Capacity, J/kg-K 390
440
Thermal Conductivity, W/m-K 40
15
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
1.8

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.8
Embodied Carbon, kg CO2/kg material 3.6
8.3
Embodied Energy, MJ/kg 56
120
Embodied Water, L/kg 310
480

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19 to 120
7.7
Resilience: Unit (Modulus of Resilience), kJ/m3 930 to 1410
960
Stiffness to Weight: Axial, points 7.8
14
Stiffness to Weight: Bending, points 19
23
Strength to Weight: Axial, points 19 to 20
26
Strength to Weight: Bending, points 19
22
Thermal Diffusivity, mm2/s 12
3.8
Thermal Shock Resistance, points 22 to 23
23

Alloy Composition


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Carbon (C), % 0
1.4 to 2.0
Chromium (Cr), % 0
27 to 32
Cobalt (Co), % 0
47.5 to 64.1
Copper (Cu), % 63.5 to 66.5
0
Iron (Fe), % 0 to 0.25
0 to 3.0
Lead (Pb), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.5
0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 11 to 13
0 to 3.0
Silicon (Si), % 0
0 to 2.0
Tungsten (W), % 0
7.5 to 9.5
Zinc (Zn), % 19.2 to 25.5
0
Residuals, % 0 to 0.5
0