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R31233 Cobalt vs. EN 2.4608 Nickel

R31233 cobalt belongs to the cobalt alloys classification, while EN 2.4608 nickel belongs to the nickel alloys. They have 47% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is R31233 cobalt and the bottom bar is EN 2.4608 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
210
Elongation at Break, % 17
34
Fatigue Strength, MPa 220
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 85
81
Tensile Strength: Ultimate (UTS), MPa 1020
620
Tensile Strength: Yield (Proof), MPa 420
270

Thermal Properties

Latent Heat of Fusion, J/g 320
330
Melting Completion (Liquidus), °C 1350
1460
Melting Onset (Solidus), °C 1330
1410
Specific Heat Capacity, J/kg-K 440
460
Thermal Conductivity, W/m-K 12
11
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 8.6
8.5
Embodied Carbon, kg CO2/kg material 8.4
8.4
Embodied Energy, MJ/kg 110
120
Embodied Water, L/kg 480
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
170
Resilience: Unit (Modulus of Resilience), kJ/m3 410
180
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 33
20
Strength to Weight: Bending, points 26
19
Thermal Diffusivity, mm2/s 3.2
2.9
Thermal Shock Resistance, points 25
16

Alloy Composition

Boron (B), % 0 to 0.015
0
Carbon (C), % 0.020 to 0.1
0.030 to 0.080
Chromium (Cr), % 23.5 to 27.5
24 to 26
Cobalt (Co), % 44.7 to 63.3
2.5 to 4.0
Iron (Fe), % 1.0 to 5.0
11.4 to 23.8
Manganese (Mn), % 0.1 to 1.5
0 to 2.0
Molybdenum (Mo), % 4.0 to 6.0
2.5 to 4.0
Nickel (Ni), % 7.0 to 11
44 to 47
Nitrogen (N), % 0.030 to 0.12
0
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.050 to 1.0
0.7 to 1.5
Sulfur (S), % 0 to 0.020
0 to 0.015
Tungsten (W), % 1.0 to 3.0
2.5 to 4.0