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Grade M30H Nickel vs. R31537 Cobalt

Grade M30H nickel belongs to the nickel alloys classification, while R31537 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 M30H nickel and the bottom bar is R31537 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
220
Elongation at Break, % 11
14 to 23
Fatigue Strength, MPa 230
310 to 480
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 61
87
Tensile Strength: Ultimate (UTS), MPa 770
1000 to 1340
Tensile Strength: Yield (Proof), MPa 470
590 to 940

Thermal Properties

Latent Heat of Fusion, J/g 320
320
Melting Completion (Liquidus), °C 1250
1360
Melting Onset (Solidus), °C 1200
1290
Specific Heat Capacity, J/kg-K 440
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 8.6
8.4
Embodied Carbon, kg CO2/kg material 7.7
8.1
Embodied Energy, MJ/kg 110
110
Embodied Water, L/kg 250
530

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 75
140 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 700
780 to 1990
Stiffness to Weight: Axial, points 10
15
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 25
33 to 44
Strength to Weight: Bending, points 22
26 to 32
Thermal Diffusivity, mm2/s 5.7
3.4
Thermal Shock Resistance, points 27
24 to 32

Alloy Composition

Carbon (C), % 0 to 0.3
0 to 0.14
Chromium (Cr), % 0
26 to 30
Cobalt (Co), % 0
58.9 to 69
Copper (Cu), % 27 to 33
0
Iron (Fe), % 0 to 3.5
0 to 0.75
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 0
5.0 to 7.0
Nickel (Ni), % 57.9 to 70.3
0 to 1.0
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 2.7 to 3.7
0 to 1.0
Sulfur (S), % 0 to 0.030
0