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EN 2.4815 Cast Nickel vs. R30021 Cobalt

EN 2.4815 cast nickel belongs to the nickel alloys classification, while R30021 cobalt belongs to the cobalt alloys. They have a modest 21% 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 (4, 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 R30021 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220
Elongation at Break, % 3.4
9.0
Fatigue Strength, MPa 89
250
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
86
Tensile Strength: Ultimate (UTS), MPa 460
700
Tensile Strength: Yield (Proof), MPa 220
500

Thermal Properties

Latent Heat of Fusion, J/g 330
330
Melting Completion (Liquidus), °C 1510
1350
Melting Onset (Solidus), °C 1450
1190
Specific Heat Capacity, J/kg-K 470
450
Thermal Conductivity, W/m-K 25
15
Thermal Expansion, µm/m-K 10
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.1
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
2.1

Otherwise Unclassified Properties

Density, g/cm3 8.3
8.4
Embodied Carbon, kg CO2/kg material 7.9
8.0
Embodied Energy, MJ/kg 110
110
Embodied Water, L/kg 230
520

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13
57
Resilience: Unit (Modulus of Resilience), kJ/m3 130
570
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 15
23
Strength to Weight: Bending, points 16
21
Thermal Diffusivity, mm2/s 6.4
3.8
Thermal Shock Resistance, points 17
21

Alloy Composition

Carbon (C), % 0.35 to 0.65
0.2 to 0.35
Chromium (Cr), % 12 to 18
26 to 29
Cobalt (Co), % 0
61.7 to 67.3
Iron (Fe), % 9.8 to 28.7
0 to 3.0
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 0 to 1.0
4.5 to 6.0
Nickel (Ni), % 58 to 66
2.0 to 3.0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 1.0 to 2.5
0 to 1.5
Sulfur (S), % 0 to 0.030
0