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Nickel 22 vs. R30605 Cobalt

Nickel 22 belongs to the nickel alloys classification, while R30605 cobalt belongs to the cobalt alloys. They have a modest 36% 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 (5, in this case) are not shown.

For each property being compared, the top bar is nickel 22 and the bottom bar is R30605 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
210
Elongation at Break, % 49
34
Fatigue Strength, MPa 330
260 to 590
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 84
81
Tensile Strength: Ultimate (UTS), MPa 790
1130 to 1900
Tensile Strength: Yield (Proof), MPa 360
470 to 1600

Thermal Properties

Latent Heat of Fusion, J/g 320
290
Melting Completion (Liquidus), °C 1390
1410
Melting Onset (Solidus), °C 1360
1330
Specific Heat Capacity, J/kg-K 430
410
Thermal Conductivity, W/m-K 10
9.6
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 1.5
1.8

Otherwise Unclassified Properties

Density, g/cm3 8.9
9.6
Embodied Carbon, kg CO2/kg material 12
9.8
Embodied Energy, MJ/kg 170
140
Embodied Water, L/kg 300
450

Common Calculations

Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 22
21
Strength to Weight: Axial, points 25
33 to 55
Strength to Weight: Bending, points 21
25 to 36
Thermal Diffusivity, mm2/s 2.7
2.5
Thermal Shock Resistance, points 24
31 to 52

Alloy Composition

Carbon (C), % 0 to 0.015
0.050 to 0.15
Chromium (Cr), % 20 to 22.5
19 to 21
Cobalt (Co), % 0 to 2.5
46.4 to 57
Iron (Fe), % 2.0 to 6.0
0 to 3.0
Manganese (Mn), % 0 to 0.015
1.0 to 2.0
Molybdenum (Mo), % 12.5 to 14.5
0
Nickel (Ni), % 50.8 to 63
9.0 to 11
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0 to 0.080
0 to 0.4
Sulfur (S), % 0 to 0.020
0 to 0.030
Tungsten (W), % 2.5 to 3.5
14 to 16
Vanadium (V), % 0 to 0.35
0