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Grade M30C Nickel vs. R31539 Cobalt

Grade M30C nickel belongs to the nickel alloys classification, while R31539 cobalt belongs to the cobalt alloys. There are 27 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is grade M30C nickel and the bottom bar is R31539 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
220
Elongation at Break, % 29
13 to 22
Fatigue Strength, MPa 170
310 to 480
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 61
86
Tensile Strength: Ultimate (UTS), MPa 510
1000 to 1340
Tensile Strength: Yield (Proof), MPa 250
590 to 940

Thermal Properties

Latent Heat of Fusion, J/g 290
320
Melting Completion (Liquidus), °C 1290
1360
Melting Onset (Solidus), °C 1240
1290
Specific Heat Capacity, J/kg-K 430
450
Thermal Conductivity, W/m-K 22
13
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.3
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
2.1

Otherwise Unclassified Properties

Density, g/cm3 8.8
8.4
Embodied Carbon, kg CO2/kg material 9.5
8.2
Embodied Energy, MJ/kg 140
110
Embodied Water, L/kg 250
530

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
140 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 200
780 to 2000
Stiffness to Weight: Axial, points 10
15
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 16
33 to 44
Strength to Weight: Bending, points 16
27 to 32
Thermal Diffusivity, mm2/s 5.7
3.5
Thermal Shock Resistance, points 18
24 to 32

Alloy Composition

Aluminum (Al), % 0
0.3 to 1.0
Carbon (C), % 0 to 0.3
0 to 0.14
Chromium (Cr), % 0
26 to 30
Cobalt (Co), % 0
57.7 to 68.7
Copper (Cu), % 26 to 33
0
Iron (Fe), % 0 to 3.5
0 to 0.75
Lanthanum (La), % 0
0.030 to 0.2
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 0
5.0 to 7.0
Nickel (Ni), % 56.6 to 72
0 to 1.0
Niobium (Nb), % 1.0 to 3.0
0
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 1.0 to 2.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0