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R30155 Cobalt vs. Grade N12MV Nickel

R30155 cobalt belongs to the iron alloys classification, while grade N12MV nickel belongs to the nickel alloys. They have a modest 30% of their average alloy composition in common, which, by itself, doesn't mean much. 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 N12MV nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
220
Elongation at Break, % 34
6.8
Fatigue Strength, MPa 310
130
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 81
84
Tensile Strength: Ultimate (UTS), MPa 850
600
Tensile Strength: Yield (Proof), MPa 390
310

Thermal Properties

Latent Heat of Fusion, J/g 300
320
Maximum Temperature: Mechanical, °C 1100
900
Melting Completion (Liquidus), °C 1470
1620
Melting Onset (Solidus), °C 1420
1570
Specific Heat Capacity, J/kg-K 450
390
Thermal Expansion, µm/m-K 14
10

Otherwise Unclassified Properties

Base Metal Price, % relative 80
75
Density, g/cm3 8.5
9.2
Embodied Carbon, kg CO2/kg material 9.7
16
Embodied Energy, MJ/kg 150
200
Embodied Water, L/kg 300
260

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
34
Resilience: Unit (Modulus of Resilience), kJ/m3 370
220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
22
Strength to Weight: Axial, points 28
18
Strength to Weight: Bending, points 24
17
Thermal Shock Resistance, points 21
19

Alloy Composition

Carbon (C), % 0.080 to 0.16
0 to 0.12
Chromium (Cr), % 20 to 22.5
0 to 1.0
Cobalt (Co), % 18.5 to 21
0
Iron (Fe), % 24.3 to 36.2
4.0 to 6.0
Manganese (Mn), % 1.0 to 2.0
0 to 1.0
Molybdenum (Mo), % 2.5 to 3.5
26 to 30
Nickel (Ni), % 19 to 21
60.2 to 69.8
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
Vanadium (V), % 0
0.2 to 0.6