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R31233 Cobalt vs. Grade M35-2 Nickel

R31233 cobalt belongs to the cobalt alloys classification, while grade M35-2 nickel belongs to the nickel alloys. There are 27 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is R31233 cobalt and the bottom bar is grade M35-2 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
160
Elongation at Break, % 17
28
Fatigue Strength, MPa 220
160
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 85
62
Tensile Strength: Ultimate (UTS), MPa 1020
500
Tensile Strength: Yield (Proof), MPa 420
230

Thermal Properties

Latent Heat of Fusion, J/g 320
280
Melting Completion (Liquidus), °C 1350
1280
Melting Onset (Solidus), °C 1330
1230
Specific Heat Capacity, J/kg-K 440
430
Thermal Conductivity, W/m-K 12
22
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
3.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
3.4

Otherwise Unclassified Properties

Density, g/cm3 8.6
8.8
Embodied Carbon, kg CO2/kg material 8.4
8.1
Embodied Energy, MJ/kg 110
110
Embodied Water, L/kg 480
250

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
120
Resilience: Unit (Modulus of Resilience), kJ/m3 410
170
Stiffness to Weight: Axial, points 14
10
Stiffness to Weight: Bending, points 23
21
Strength to Weight: Axial, points 33
16
Strength to Weight: Bending, points 26
16
Thermal Diffusivity, mm2/s 3.2
5.7
Thermal Shock Resistance, points 25
17

Alloy Composition

Boron (B), % 0 to 0.015
0
Carbon (C), % 0.020 to 0.1
0 to 0.35
Chromium (Cr), % 23.5 to 27.5
0
Cobalt (Co), % 44.7 to 63.3
0
Copper (Cu), % 0
26 to 33
Iron (Fe), % 1.0 to 5.0
0 to 3.5
Manganese (Mn), % 0.1 to 1.5
0 to 1.5
Molybdenum (Mo), % 4.0 to 6.0
0
Nickel (Ni), % 7.0 to 11
59.1 to 74
Niobium (Nb), % 0
0 to 0.5
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 to 2.0
Sulfur (S), % 0 to 0.020
0 to 0.030
Tungsten (W), % 1.0 to 3.0
0