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R30075 Cobalt vs. N08120 Nickel

R30075 cobalt belongs to the cobalt alloys classification, while N08120 nickel belongs to the nickel alloys. They have a modest 30% 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 (7, in this case) are not shown.

For each property being compared, the top bar is R30075 cobalt and the bottom bar is N08120 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210 to 250
200
Elongation at Break, % 12
34
Fatigue Strength, MPa 250 to 840
230
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 82 to 98
79
Tensile Strength: Ultimate (UTS), MPa 780 to 1280
700
Tensile Strength: Yield (Proof), MPa 480 to 840
310

Thermal Properties

Latent Heat of Fusion, J/g 320
310
Melting Completion (Liquidus), °C 1360
1420
Melting Onset (Solidus), °C 1290
1370
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 13
11
Thermal Expansion, µm/m-K 12
14

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.2
Embodied Carbon, kg CO2/kg material 8.1
7.2
Embodied Energy, MJ/kg 110
100
Embodied Water, L/kg 530
240

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84 to 140
190
Resilience: Unit (Modulus of Resilience), kJ/m3 560 to 1410
240
Stiffness to Weight: Axial, points 14 to 17
14
Stiffness to Weight: Bending, points 24 to 25
24
Strength to Weight: Axial, points 26 to 42
24
Strength to Weight: Bending, points 22 to 31
21
Thermal Diffusivity, mm2/s 3.5
3.0
Thermal Shock Resistance, points 21 to 29
17

Alloy Composition

Aluminum (Al), % 0 to 0.1
0 to 0.4
Boron (B), % 0 to 0.010
0 to 0.010
Carbon (C), % 0 to 0.35
0.020 to 0.1
Chromium (Cr), % 27 to 30
23 to 27
Cobalt (Co), % 58.7 to 68
0 to 3.0
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 0 to 0.75
21 to 41.4
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 5.0 to 7.0
0 to 2.5
Nickel (Ni), % 0 to 0.5
35 to 39
Niobium (Nb), % 0
0.4 to 0.9
Nitrogen (N), % 0 to 0.25
0.15 to 0.3
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 0 to 0.1
0 to 0.2
Tungsten (W), % 0 to 0.2
0 to 2.5