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R30605 Cobalt vs. Nickel 22

R30605 cobalt belongs to the cobalt alloys classification, while nickel 22 belongs to the nickel 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 R30605 cobalt and the bottom bar is nickel 22.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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