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R31539 Cobalt vs. Nickel 30

R31539 cobalt belongs to the cobalt alloys classification, while nickel 30 belongs to the nickel alloys. They have a modest 37% of their average alloy composition in common, which, by itself, doesn't mean much. There are 27 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is R31539 cobalt and the bottom bar is nickel 30.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
210
Elongation at Break, % 13 to 22
34
Fatigue Strength, MPa 310 to 480
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 86
82
Tensile Strength: Ultimate (UTS), MPa 1000 to 1340
660
Tensile Strength: Yield (Proof), MPa 590 to 940
270

Thermal Properties

Latent Heat of Fusion, J/g 320
320
Melting Completion (Liquidus), °C 1360
1480
Melting Onset (Solidus), °C 1290
1430
Specific Heat Capacity, J/kg-K 450
450
Thermal Conductivity, W/m-K 13
10
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
1.6

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.5
Embodied Carbon, kg CO2/kg material 8.2
9.4
Embodied Energy, MJ/kg 110
130
Embodied Water, L/kg 530
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 190
180
Resilience: Unit (Modulus of Resilience), kJ/m3 780 to 2000
180
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 33 to 44
22
Strength to Weight: Bending, points 27 to 32
20
Thermal Diffusivity, mm2/s 3.5
2.7
Thermal Shock Resistance, points 24 to 32
18

Alloy Composition

Aluminum (Al), % 0.3 to 1.0
0
Carbon (C), % 0 to 0.14
0 to 0.030
Chromium (Cr), % 26 to 30
28 to 31.5
Cobalt (Co), % 57.7 to 68.7
0 to 5.0
Copper (Cu), % 0
1.0 to 2.4
Iron (Fe), % 0 to 0.75
13 to 17
Lanthanum (La), % 0.030 to 0.2
0
Manganese (Mn), % 0 to 1.0
0 to 0.030
Molybdenum (Mo), % 5.0 to 7.0
4.0 to 6.0
Nickel (Ni), % 0 to 1.0
30.2 to 52.2
Niobium (Nb), % 0
0.3 to 1.5
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.8
Sulfur (S), % 0
0 to 0.020
Tungsten (W), % 0
1.5 to 4.0