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R30605 Cobalt vs. Grade CW6M Nickel

R30605 cobalt belongs to the cobalt alloys classification, while grade CW6M nickel belongs to the nickel alloys. They have a modest 31% of their average alloy composition in common, which, by itself, doesn't mean much. There are 21 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is R30605 cobalt and the bottom bar is grade CW6M nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
220
Elongation at Break, % 34
29
Fatigue Strength, MPa 260 to 590
210
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 81
84
Tensile Strength: Ultimate (UTS), MPa 1130 to 1900
560
Tensile Strength: Yield (Proof), MPa 470 to 1600
310

Thermal Properties

Latent Heat of Fusion, J/g 290
330
Melting Completion (Liquidus), °C 1410
1530
Melting Onset (Solidus), °C 1330
1470
Specific Heat Capacity, J/kg-K 410
430
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Density, g/cm3 9.6
8.8
Embodied Carbon, kg CO2/kg material 9.8
13
Embodied Energy, MJ/kg 140
170
Embodied Water, L/kg 450
300

Common Calculations

Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 21
23
Strength to Weight: Axial, points 33 to 55
18
Strength to Weight: Bending, points 25 to 36
17
Thermal Shock Resistance, points 31 to 52
16

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.070
Chromium (Cr), % 19 to 21
17 to 20
Cobalt (Co), % 46.4 to 57
0
Iron (Fe), % 0 to 3.0
0 to 3.0
Manganese (Mn), % 1.0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0
17 to 20
Nickel (Ni), % 9.0 to 11
54.9 to 66
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 14 to 16
0