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Nickel 617 vs. R31233 Cobalt

Nickel 617 belongs to the nickel alloys classification, while R31233 cobalt belongs to the cobalt alloys. They have 51% 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 nickel 617 and the bottom bar is R31233 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
220
Elongation at Break, % 40
17
Fatigue Strength, MPa 220
220
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 80
85
Tensile Strength: Ultimate (UTS), MPa 740
1020
Tensile Strength: Yield (Proof), MPa 280
420

Thermal Properties

Latent Heat of Fusion, J/g 330
320
Melting Completion (Liquidus), °C 1380
1350
Melting Onset (Solidus), °C 1330
1330
Specific Heat Capacity, J/kg-K 450
440
Thermal Conductivity, W/m-K 13
12
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 1.5
2.1

Otherwise Unclassified Properties

Density, g/cm3 8.5
8.6
Embodied Carbon, kg CO2/kg material 10
8.4
Embodied Energy, MJ/kg 140
110
Embodied Water, L/kg 350
480

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
140
Resilience: Unit (Modulus of Resilience), kJ/m3 190
410
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 24
33
Strength to Weight: Bending, points 21
26
Thermal Diffusivity, mm2/s 3.5
3.2
Thermal Shock Resistance, points 21
25

Alloy Composition

Aluminum (Al), % 0.8 to 1.5
0
Boron (B), % 0 to 0.0060
0 to 0.015
Carbon (C), % 0.050 to 0.15
0.020 to 0.1
Chromium (Cr), % 20 to 24
23.5 to 27.5
Cobalt (Co), % 10 to 15
44.7 to 63.3
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 0 to 3.0
1.0 to 5.0
Manganese (Mn), % 0 to 1.0
0.1 to 1.5
Molybdenum (Mo), % 8.0 to 10
4.0 to 6.0
Nickel (Ni), % 44.5 to 62
7.0 to 11
Nitrogen (N), % 0
0.030 to 0.12
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 1.0
0.050 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.020
Tungsten (W), % 0
1.0 to 3.0