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R30155 Cobalt vs. Grade CW6M Nickel

R30155 cobalt belongs to the iron alloys classification, while grade CW6M nickel belongs to the nickel alloys. They have 44% of their average alloy composition in common. There are 25 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 R30155 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 310
210
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 81
84
Tensile Strength: Ultimate (UTS), MPa 850
560
Tensile Strength: Yield (Proof), MPa 390
310

Thermal Properties

Latent Heat of Fusion, J/g 300
330
Maximum Temperature: Mechanical, °C 1100
970
Melting Completion (Liquidus), °C 1470
1530
Melting Onset (Solidus), °C 1420
1470
Specific Heat Capacity, J/kg-K 450
430
Thermal Expansion, µm/m-K 14
12

Otherwise Unclassified Properties

Base Metal Price, % relative 80
65
Density, g/cm3 8.5
8.8
Embodied Carbon, kg CO2/kg material 9.7
13
Embodied Energy, MJ/kg 150
170
Embodied Water, L/kg 300
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
140
Resilience: Unit (Modulus of Resilience), kJ/m3 370
220
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 28
18
Strength to Weight: Bending, points 24
17
Thermal Shock Resistance, points 21
16

Alloy Composition

Carbon (C), % 0.080 to 0.16
0 to 0.070
Chromium (Cr), % 20 to 22.5
17 to 20
Cobalt (Co), % 18.5 to 21
0
Iron (Fe), % 24.3 to 36.2
0 to 3.0
Manganese (Mn), % 1.0 to 2.0
0 to 1.0
Molybdenum (Mo), % 2.5 to 3.5
17 to 20
Nickel (Ni), % 19 to 21
54.9 to 66
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0 to 0.2
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tantalum (Ta), % 0.75 to 1.3
0
Tungsten (W), % 2.0 to 3.0
0