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G-CoCr28 Cobalt vs. C78200 Nickel Silver

G-CoCr28 cobalt belongs to the cobalt alloys classification, while C78200 nickel silver belongs to the copper 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 G-CoCr28 cobalt and the bottom bar is C78200 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
110
Elongation at Break, % 6.7
3.0 to 40
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 83
43
Tensile Strength: Ultimate (UTS), MPa 560
370 to 630
Tensile Strength: Yield (Proof), MPa 260
170 to 570

Thermal Properties

Latent Heat of Fusion, J/g 320
190
Maximum Temperature: Mechanical, °C 1200
160
Melting Completion (Liquidus), °C 1330
1000
Melting Onset (Solidus), °C 1270
970
Specific Heat Capacity, J/kg-K 470
390
Thermal Conductivity, W/m-K 8.5
48
Thermal Expansion, µm/m-K 14
19

Otherwise Unclassified Properties

Base Metal Price, % relative 100
28
Density, g/cm3 8.1
8.4
Embodied Carbon, kg CO2/kg material 6.2
3.3
Embodied Energy, MJ/kg 84
52
Embodied Water, L/kg 440
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
18 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 160
130 to 1440
Stiffness to Weight: Axial, points 15
7.4
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 19
12 to 21
Strength to Weight: Bending, points 19
14 to 19
Thermal Diffusivity, mm2/s 2.2
15
Thermal Shock Resistance, points 14
12 to 21

Alloy Composition


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Carbon (C), % 0.050 to 0.25
0
Chromium (Cr), % 27 to 30
0
Cobalt (Co), % 48 to 52
0
Copper (Cu), % 0
63 to 67
Iron (Fe), % 9.7 to 24.5
0 to 0.35
Lead (Pb), % 0
1.5 to 2.5
Manganese (Mn), % 0 to 1.5
0 to 0.5
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 4.0
7.0 to 9.0
Niobium (Nb), % 0 to 0.5
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0.5 to 1.5
0
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
20.2 to 28.5
Residuals, % 0
0 to 0.5