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EN 2.4851 Nickel vs. R30816 Cobalt

EN 2.4851 nickel belongs to the nickel alloys classification, while R30816 cobalt belongs to the cobalt alloys. They have 43% of their average alloy composition in common. There are 26 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 2.4851 nickel and the bottom bar is R30816 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
280
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 34
23
Fatigue Strength, MPa 170
250
Poisson's Ratio 0.28
0.3
Shear Modulus, GPa 76
81
Tensile Strength: Ultimate (UTS), MPa 650
1020
Tensile Strength: Yield (Proof), MPa 230
460

Thermal Properties

Latent Heat of Fusion, J/g 320
300
Melting Completion (Liquidus), °C 1360
1540
Melting Onset (Solidus), °C 1310
1460
Specific Heat Capacity, J/kg-K 470
420
Thermal Conductivity, W/m-K 11
13
Thermal Expansion, µm/m-K 14
12

Otherwise Unclassified Properties

Density, g/cm3 8.2
9.1
Embodied Carbon, kg CO2/kg material 8.1
20
Embodied Energy, MJ/kg 120
320
Embodied Water, L/kg 280
440

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
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 22
31
Strength to Weight: Bending, points 20
25
Thermal Diffusivity, mm2/s 2.9
3.3
Thermal Shock Resistance, points 17
28

Alloy Composition

Aluminum (Al), % 1.0 to 1.7
0
Boron (B), % 0 to 0.0060
0
Carbon (C), % 0.030 to 0.1
0.32 to 0.42
Chromium (Cr), % 21 to 25
19 to 21
Cobalt (Co), % 0
40 to 49.8
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 7.7 to 18
0 to 5.0
Manganese (Mn), % 0 to 1.0
1.0 to 2.0
Molybdenum (Mo), % 0
3.5 to 4.5
Nickel (Ni), % 58 to 63
19 to 21
Niobium (Nb), % 0
3.5 to 4.5
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Tantalum (Ta), % 0
3.5 to 4.5
Titanium (Ti), % 0 to 0.5
0
Tungsten (W), % 0
3.5 to 4.5