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EN 2.4815 Cast Nickel vs. R30816 Cobalt

EN 2.4815 cast nickel belongs to the nickel alloys classification, while R30816 cobalt belongs to the cobalt alloys. They have a modest 40% 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 (6, in this case) are not shown.

For each property being compared, the top bar is EN 2.4815 cast nickel and the bottom bar is R30816 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 3.4
23
Fatigue Strength, MPa 89
250
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 74
81
Tensile Strength: Ultimate (UTS), MPa 460
1020
Tensile Strength: Yield (Proof), MPa 220
460

Thermal Properties

Latent Heat of Fusion, J/g 330
300
Melting Completion (Liquidus), °C 1510
1540
Melting Onset (Solidus), °C 1450
1460
Specific Heat Capacity, J/kg-K 470
420
Thermal Conductivity, W/m-K 25
13
Thermal Expansion, µm/m-K 10
12

Otherwise Unclassified Properties

Density, g/cm3 8.3
9.1
Embodied Carbon, kg CO2/kg material 7.9
20
Embodied Energy, MJ/kg 110
320
Embodied Water, L/kg 230
440

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13
190
Resilience: Unit (Modulus of Resilience), kJ/m3 130
510
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
22
Strength to Weight: Axial, points 15
31
Strength to Weight: Bending, points 16
25
Thermal Diffusivity, mm2/s 6.4
3.3
Thermal Shock Resistance, points 17
28

Alloy Composition

Carbon (C), % 0.35 to 0.65
0.32 to 0.42
Chromium (Cr), % 12 to 18
19 to 21
Cobalt (Co), % 0
40 to 49.8
Iron (Fe), % 9.8 to 28.7
0 to 5.0
Manganese (Mn), % 0 to 2.0
1.0 to 2.0
Molybdenum (Mo), % 0 to 1.0
3.5 to 4.5
Nickel (Ni), % 58 to 66
19 to 21
Niobium (Nb), % 0
3.5 to 4.5
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 1.0 to 2.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tantalum (Ta), % 0
3.5 to 4.5
Tungsten (W), % 0
3.5 to 4.5