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R30605 Cobalt vs. N06255 Nickel

R30605 cobalt belongs to the cobalt alloys classification, while N06255 nickel belongs to the nickel alloys. They have a modest 34% of their average alloy composition in common, which, by itself, doesn't mean much. There are 21 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is R30605 cobalt and the bottom bar is N06255 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
210
Elongation at Break, % 34
45
Fatigue Strength, MPa 260 to 590
210
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 81
81
Tensile Strength: Ultimate (UTS), MPa 1130 to 1900
660
Tensile Strength: Yield (Proof), MPa 470 to 1600
250

Thermal Properties

Latent Heat of Fusion, J/g 290
320
Melting Completion (Liquidus), °C 1410
1470
Melting Onset (Solidus), °C 1330
1420
Specific Heat Capacity, J/kg-K 410
450
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Density, g/cm3 9.6
8.5
Embodied Carbon, kg CO2/kg material 9.8
9.4
Embodied Energy, MJ/kg 140
130
Embodied Water, L/kg 450
270

Common Calculations

Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 21
23
Strength to Weight: Axial, points 33 to 55
22
Strength to Weight: Bending, points 25 to 36
20
Thermal Shock Resistance, points 31 to 52
17

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.030
Chromium (Cr), % 19 to 21
23 to 26
Cobalt (Co), % 46.4 to 57
0
Copper (Cu), % 0
0 to 1.2
Iron (Fe), % 0 to 3.0
6.0 to 24
Manganese (Mn), % 1.0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0
6.0 to 9.0
Nickel (Ni), % 9.0 to 11
47 to 52
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0
0 to 0.69
Tungsten (W), % 14 to 16
0 to 3.0