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EN 2.4608 Nickel vs. R30816 Cobalt

EN 2.4608 nickel belongs to the nickel alloys classification, while R30816 cobalt belongs to the cobalt alloys. They have 54% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 2.4608 nickel and the bottom bar is R30816 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
210
Elongation at Break, % 34
23
Fatigue Strength, MPa 200
250
Poisson's Ratio 0.28
0.3
Shear Modulus, GPa 81
81
Tensile Strength: Ultimate (UTS), MPa 620
1020
Tensile Strength: Yield (Proof), MPa 270
460

Thermal Properties

Latent Heat of Fusion, J/g 330
300
Melting Completion (Liquidus), °C 1460
1540
Melting Onset (Solidus), °C 1410
1460
Specific Heat Capacity, J/kg-K 460
420
Thermal Conductivity, W/m-K 11
13
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Density, g/cm3 8.5
9.1
Embodied Carbon, kg CO2/kg material 8.4
20
Embodied Energy, MJ/kg 120
320
Embodied Water, L/kg 270
440

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
190
Resilience: Unit (Modulus of Resilience), kJ/m3 180
510
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
22
Strength to Weight: Axial, points 20
31
Strength to Weight: Bending, points 19
25
Thermal Diffusivity, mm2/s 2.9
3.3
Thermal Shock Resistance, points 16
28

Alloy Composition

Carbon (C), % 0.030 to 0.080
0.32 to 0.42
Chromium (Cr), % 24 to 26
19 to 21
Cobalt (Co), % 2.5 to 4.0
40 to 49.8
Iron (Fe), % 11.4 to 23.8
0 to 5.0
Manganese (Mn), % 0 to 2.0
1.0 to 2.0
Molybdenum (Mo), % 2.5 to 4.0
3.5 to 4.5
Nickel (Ni), % 44 to 47
19 to 21
Niobium (Nb), % 0
3.5 to 4.5
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.7 to 1.5
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Tantalum (Ta), % 0
3.5 to 4.5
Tungsten (W), % 2.5 to 4.0
3.5 to 4.5