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R31538 Cobalt vs. Nickel 242

R31538 cobalt belongs to the cobalt alloys classification, while nickel 242 belongs to the nickel alloys. There are 27 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is R31538 cobalt and the bottom bar is nickel 242.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
220
Elongation at Break, % 13 to 23
45
Fatigue Strength, MPa 310 to 480
300
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 86
84
Tensile Strength: Ultimate (UTS), MPa 1020 to 1360
820
Tensile Strength: Yield (Proof), MPa 580 to 930
350

Thermal Properties

Latent Heat of Fusion, J/g 320
330
Melting Completion (Liquidus), °C 1360
1380
Melting Onset (Solidus), °C 1290
1290
Specific Heat Capacity, J/kg-K 450
400
Thermal Conductivity, W/m-K 13
11
Thermal Expansion, µm/m-K 13
11

Electrical Properties

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

Otherwise Unclassified Properties

Density, g/cm3 8.4
9.0
Embodied Carbon, kg CO2/kg material 8.1
14
Embodied Energy, MJ/kg 110
180
Embodied Water, L/kg 530
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 200
300
Resilience: Unit (Modulus of Resilience), kJ/m3 750 to 1920
280
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 34 to 45
25
Strength to Weight: Bending, points 27 to 32
21
Thermal Diffusivity, mm2/s 3.5
3.1
Thermal Shock Resistance, points 25 to 33
25

Alloy Composition

Aluminum (Al), % 0
0 to 0.5
Boron (B), % 0
0 to 0.0060
Carbon (C), % 0.15 to 0.35
0 to 0.030
Chromium (Cr), % 26 to 30
7.0 to 9.0
Cobalt (Co), % 58.7 to 68.9
0 to 1.0
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 0 to 0.75
0 to 2.0
Manganese (Mn), % 0 to 1.0
0 to 0.8
Molybdenum (Mo), % 5.0 to 7.0
24 to 26
Nickel (Ni), % 0 to 1.0
59.3 to 69
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.8
Sulfur (S), % 0
0 to 0.015