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R31233 Cobalt vs. Grade CX2M Nickel

R31233 cobalt belongs to the cobalt alloys classification, while grade CX2M nickel belongs to the nickel alloys. They have a modest 39% of their average alloy composition in common, which, by itself, doesn't mean much. There are 25 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 R31233 cobalt and the bottom bar is grade CX2M nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
220
Elongation at Break, % 17
45
Fatigue Strength, MPa 220
260
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 85
84
Tensile Strength: Ultimate (UTS), MPa 1020
550
Tensile Strength: Yield (Proof), MPa 420
310

Thermal Properties

Latent Heat of Fusion, J/g 320
330
Melting Completion (Liquidus), °C 1350
1500
Melting Onset (Solidus), °C 1330
1450
Specific Heat Capacity, J/kg-K 440
430
Thermal Conductivity, W/m-K 12
10
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Density, g/cm3 8.6
8.7
Embodied Carbon, kg CO2/kg material 8.4
12
Embodied Energy, MJ/kg 110
160
Embodied Water, L/kg 480
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
210
Resilience: Unit (Modulus of Resilience), kJ/m3 410
220
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 33
18
Strength to Weight: Bending, points 26
17
Thermal Diffusivity, mm2/s 3.2
2.7
Thermal Shock Resistance, points 25
15

Alloy Composition

Boron (B), % 0 to 0.015
0
Carbon (C), % 0.020 to 0.1
0 to 0.020
Chromium (Cr), % 23.5 to 27.5
22 to 24
Cobalt (Co), % 44.7 to 63.3
0
Iron (Fe), % 1.0 to 5.0
0 to 1.5
Manganese (Mn), % 0.1 to 1.5
0 to 1.0
Molybdenum (Mo), % 4.0 to 6.0
15 to 16.5
Nickel (Ni), % 7.0 to 11
56.4 to 63
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 0.5
Sulfur (S), % 0 to 0.020
0 to 0.020
Tungsten (W), % 1.0 to 3.0
0