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Grade CW6M Nickel vs. R30006 Cobalt

Grade CW6M nickel belongs to the nickel alloys classification, while R30006 cobalt belongs to the cobalt alloys. They have a modest 23% of their average alloy composition in common, which, by itself, doesn't mean much. There are 23 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is grade CW6M nickel and the bottom bar is R30006 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
220
Elongation at Break, % 29
1.0
Fatigue Strength, MPa 210
260
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 84
85
Tensile Strength: Ultimate (UTS), MPa 560
900
Tensile Strength: Yield (Proof), MPa 310
540

Thermal Properties

Latent Heat of Fusion, J/g 330
320
Melting Completion (Liquidus), °C 1530
1400
Melting Onset (Solidus), °C 1470
1290
Specific Heat Capacity, J/kg-K 430
450
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Density, g/cm3 8.8
8.6
Embodied Carbon, kg CO2/kg material 13
7.8
Embodied Energy, MJ/kg 170
110
Embodied Water, L/kg 300
500

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
7.8
Resilience: Unit (Modulus of Resilience), kJ/m3 220
670
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 18
29
Strength to Weight: Bending, points 17
24
Thermal Shock Resistance, points 16
26

Alloy Composition

Carbon (C), % 0 to 0.070
0.9 to 1.4
Chromium (Cr), % 17 to 20
27 to 32
Cobalt (Co), % 0
48.6 to 68.1
Iron (Fe), % 0 to 3.0
0 to 3.0
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 17 to 20
0 to 1.0
Nickel (Ni), % 54.9 to 66
0 to 3.0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 2.0
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 0
4.0 to 6.0