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Nickel 22 vs. R30012 Cobalt

Nickel 22 belongs to the nickel alloys classification, while R30012 cobalt belongs to the cobalt alloys. They have a modest 29% of their average alloy composition in common, which, by itself, doesn't mean much. 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 nickel 22 and the bottom bar is R30012 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
220
Elongation at Break, % 49
1.0
Fatigue Strength, MPa 330
320
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 84
86
Tensile Strength: Ultimate (UTS), MPa 790
830
Tensile Strength: Yield (Proof), MPa 360
650

Thermal Properties

Latent Heat of Fusion, J/g 320
320
Melting Completion (Liquidus), °C 1390
1470
Melting Onset (Solidus), °C 1360
1280
Specific Heat Capacity, J/kg-K 430
440
Thermal Conductivity, W/m-K 10
15
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 1.5
1.8

Otherwise Unclassified Properties

Density, g/cm3 8.9
8.8
Embodied Carbon, kg CO2/kg material 12
8.3
Embodied Energy, MJ/kg 170
120
Embodied Water, L/kg 300
480

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
7.7
Resilience: Unit (Modulus of Resilience), kJ/m3 300
960
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 22
23
Strength to Weight: Axial, points 25
26
Strength to Weight: Bending, points 21
22
Thermal Diffusivity, mm2/s 2.7
3.8
Thermal Shock Resistance, points 24
23

Alloy Composition

Carbon (C), % 0 to 0.015
1.4 to 2.0
Chromium (Cr), % 20 to 22.5
27 to 32
Cobalt (Co), % 0 to 2.5
47.5 to 64.1
Iron (Fe), % 2.0 to 6.0
0 to 3.0
Manganese (Mn), % 0 to 0.015
0
Molybdenum (Mo), % 12.5 to 14.5
0 to 1.0
Nickel (Ni), % 50.8 to 63
0 to 3.0
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.080
0 to 2.0
Sulfur (S), % 0 to 0.020
0
Tungsten (W), % 2.5 to 3.5
7.5 to 9.5
Vanadium (V), % 0 to 0.35
0