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Grade M30C Nickel vs. R31233 Cobalt

Grade M30C nickel belongs to the nickel alloys classification, while R31233 cobalt belongs to the cobalt alloys. There are 27 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is grade M30C nickel and the bottom bar is R31233 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
220
Elongation at Break, % 29
17
Fatigue Strength, MPa 170
220
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 61
85
Tensile Strength: Ultimate (UTS), MPa 510
1020
Tensile Strength: Yield (Proof), MPa 250
420

Thermal Properties

Latent Heat of Fusion, J/g 290
320
Melting Completion (Liquidus), °C 1290
1350
Melting Onset (Solidus), °C 1240
1330
Specific Heat Capacity, J/kg-K 430
440
Thermal Conductivity, W/m-K 22
12
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
8.6
Embodied Carbon, kg CO2/kg material 9.5
8.4
Embodied Energy, MJ/kg 140
110
Embodied Water, L/kg 250
480

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
140
Resilience: Unit (Modulus of Resilience), kJ/m3 200
410
Stiffness to Weight: Axial, points 10
14
Stiffness to Weight: Bending, points 21
23
Strength to Weight: Axial, points 16
33
Strength to Weight: Bending, points 16
26
Thermal Diffusivity, mm2/s 5.7
3.2
Thermal Shock Resistance, points 18
25

Alloy Composition

Boron (B), % 0
0 to 0.015
Carbon (C), % 0 to 0.3
0.020 to 0.1
Chromium (Cr), % 0
23.5 to 27.5
Cobalt (Co), % 0
44.7 to 63.3
Copper (Cu), % 26 to 33
0
Iron (Fe), % 0 to 3.5
1.0 to 5.0
Manganese (Mn), % 0 to 1.5
0.1 to 1.5
Molybdenum (Mo), % 0
4.0 to 6.0
Nickel (Ni), % 56.6 to 72
7.0 to 11
Niobium (Nb), % 1.0 to 3.0
0
Nitrogen (N), % 0
0.030 to 0.12
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 1.0 to 2.0
0.050 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.020
Tungsten (W), % 0
1.0 to 3.0