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Grade CW6MC Nickel vs. R30016 Cobalt

Grade CW6MC nickel belongs to the nickel alloys classification, while R30016 cobalt belongs to the cobalt alloys. They have a modest 26% of their average alloy composition in common, which, by itself, doesn't mean much. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is grade CW6MC nickel and the bottom bar is R30016 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Elongation at Break, % 28
8.4
Fatigue Strength, MPa 210
290
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 79
85
Tensile Strength: Ultimate (UTS), MPa 540
1010
Tensile Strength: Yield (Proof), MPa 310
580

Thermal Properties

Latent Heat of Fusion, J/g 330
320
Melting Completion (Liquidus), °C 1480
1360
Melting Onset (Solidus), °C 1430
1270
Specific Heat Capacity, J/kg-K 440
450
Thermal Conductivity, W/m-K 11
15
Thermal Expansion, µm/m-K 12
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.3
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 1.4
2.0

Otherwise Unclassified Properties

Density, g/cm3 8.6
8.5
Embodied Carbon, kg CO2/kg material 14
7.7
Embodied Energy, MJ/kg 200
110
Embodied Water, L/kg 290
500

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
72
Resilience: Unit (Modulus of Resilience), kJ/m3 240
770
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 18
33
Strength to Weight: Bending, points 17
26
Thermal Diffusivity, mm2/s 2.8
3.9
Thermal Shock Resistance, points 15
24

Alloy Composition

Carbon (C), % 0 to 0.060
0.9 to 1.4
Chromium (Cr), % 20 to 23
28 to 32
Cobalt (Co), % 0
49.6 to 66.9
Iron (Fe), % 0 to 5.0
0 to 3.0
Manganese (Mn), % 0 to 1.0
0.5 to 2.0
Molybdenum (Mo), % 8.0 to 10
0 to 1.5
Nickel (Ni), % 55.4 to 68.9
0 to 3.0
Niobium (Nb), % 3.2 to 4.5
0
Phosphorus (P), % 0 to 0.015
0
Silicon (Si), % 0 to 1.0
0.2 to 2.0
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 0
3.5 to 5.5