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R31538 Cobalt vs. C73500 Nickel Silver

R31538 cobalt belongs to the cobalt alloys classification, while C73500 nickel silver belongs to the copper alloys. There are 22 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is R31538 cobalt and the bottom bar is C73500 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
130
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 86
47
Tensile Strength: Ultimate (UTS), MPa 1020 to 1360
380 to 580

Thermal Properties

Latent Heat of Fusion, J/g 320
210
Melting Completion (Liquidus), °C 1360
1140
Melting Onset (Solidus), °C 1290
1090
Specific Heat Capacity, J/kg-K 450
400
Thermal Conductivity, W/m-K 13
36
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
6.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
6.7

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.7
Embodied Carbon, kg CO2/kg material 8.1
4.0
Embodied Energy, MJ/kg 110
61
Embodied Water, L/kg 530
300

Common Calculations

Stiffness to Weight: Axial, points 15
8.0
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 34 to 45
12 to 19
Strength to Weight: Bending, points 27 to 32
13 to 18
Thermal Diffusivity, mm2/s 3.5
10
Thermal Shock Resistance, points 25 to 33
13 to 19

Alloy Composition


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Carbon (C), % 0.15 to 0.35
0
Chromium (Cr), % 26 to 30
0
Cobalt (Co), % 58.7 to 68.9
0
Copper (Cu), % 0
70.5 to 73.5
Iron (Fe), % 0 to 0.75
0 to 0.25
Lead (Pb), % 0
0 to 0.1
Manganese (Mn), % 0 to 1.0
0 to 0.5
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
16.5 to 19.5
Nitrogen (N), % 0 to 0.25
0
Silicon (Si), % 0 to 1.0
0
Zinc (Zn), % 0
5.7 to 13
Residuals, % 0
0 to 0.5