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R31539 Cobalt vs. Grade M35-2 Nickel

R31539 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 (4, in this case) are not shown.

For each property being compared, the top bar is R31539 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, % 13 to 22
28
Fatigue Strength, MPa 310 to 480
160
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 86
62
Tensile Strength: Ultimate (UTS), MPa 1000 to 1340
500
Tensile Strength: Yield (Proof), MPa 590 to 940
230

Thermal Properties

Latent Heat of Fusion, J/g 320
280
Melting Completion (Liquidus), °C 1360
1280
Melting Onset (Solidus), °C 1290
1230
Specific Heat Capacity, J/kg-K 450
430
Thermal Conductivity, W/m-K 13
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 8.4
8.8
Embodied Carbon, kg CO2/kg material 8.2
8.1
Embodied Energy, MJ/kg 110
110
Embodied Water, L/kg 530
250

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 190
120
Resilience: Unit (Modulus of Resilience), kJ/m3 780 to 2000
170
Stiffness to Weight: Axial, points 15
10
Stiffness to Weight: Bending, points 24
21
Strength to Weight: Axial, points 33 to 44
16
Strength to Weight: Bending, points 27 to 32
16
Thermal Diffusivity, mm2/s 3.5
5.7
Thermal Shock Resistance, points 24 to 32
17

Alloy Composition

Aluminum (Al), % 0.3 to 1.0
0
Carbon (C), % 0 to 0.14
0 to 0.35
Chromium (Cr), % 26 to 30
0
Cobalt (Co), % 57.7 to 68.7
0
Copper (Cu), % 0
26 to 33
Iron (Fe), % 0 to 0.75
0 to 3.5
Lanthanum (La), % 0.030 to 0.2
0
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
59.1 to 74
Niobium (Nb), % 0
0 to 0.5
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 2.0
Sulfur (S), % 0
0 to 0.030