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R30016 Cobalt vs. Grade CW6MC Nickel

R30016 cobalt belongs to the cobalt alloys classification, while grade CW6MC nickel belongs to the nickel 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 R30016 cobalt and the bottom bar is grade CW6MC nickel.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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