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R31233 Cobalt vs. EN 2.4650 Nickel

R31233 cobalt belongs to the cobalt alloys classification, while EN 2.4650 nickel belongs to the nickel alloys. They have 55% 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 2.4650 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
210
Elongation at Break, % 17
34
Fatigue Strength, MPa 220
480
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 85
80
Tensile Strength: Ultimate (UTS), MPa 1020
1090
Tensile Strength: Yield (Proof), MPa 420
650

Thermal Properties

Latent Heat of Fusion, J/g 320
320
Melting Completion (Liquidus), °C 1350
1400
Melting Onset (Solidus), °C 1330
1350
Specific Heat Capacity, J/kg-K 440
450
Thermal Conductivity, W/m-K 12
12
Thermal Expansion, µm/m-K 13
11

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
10
Embodied Energy, MJ/kg 110
140
Embodied Water, L/kg 480
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
320
Resilience: Unit (Modulus of Resilience), kJ/m3 410
1030
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 33
36
Strength to Weight: Bending, points 26
28
Thermal Diffusivity, mm2/s 3.2
3.1
Thermal Shock Resistance, points 25
33

Alloy Composition

Aluminum (Al), % 0
0.3 to 0.6
Boron (B), % 0 to 0.015
0 to 0.0050
Carbon (C), % 0.020 to 0.1
0.040 to 0.080
Chromium (Cr), % 23.5 to 27.5
19 to 21
Cobalt (Co), % 44.7 to 63.3
19 to 21
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 1.0 to 5.0
0 to 0.7
Manganese (Mn), % 0.1 to 1.5
0 to 0.6
Molybdenum (Mo), % 4.0 to 6.0
5.6 to 6.1
Nickel (Ni), % 7.0 to 11
46.9 to 54.2
Nitrogen (N), % 0.030 to 0.12
0
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 0.050 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.020
0 to 0.0070
Titanium (Ti), % 0
1.9 to 2.4
Tungsten (W), % 1.0 to 3.0
0