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R30006 Cobalt vs. N06255 Nickel

R30006 cobalt belongs to the cobalt alloys classification, while N06255 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 23 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is R30006 cobalt and the bottom bar is N06255 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
210
Elongation at Break, % 1.0
45
Fatigue Strength, MPa 260
210
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 85
81
Tensile Strength: Ultimate (UTS), MPa 900
660
Tensile Strength: Yield (Proof), MPa 540
250

Thermal Properties

Latent Heat of Fusion, J/g 320
320
Melting Completion (Liquidus), °C 1400
1470
Melting Onset (Solidus), °C 1290
1420
Specific Heat Capacity, J/kg-K 450
450
Thermal Expansion, µm/m-K 11
13

Otherwise Unclassified Properties

Density, g/cm3 8.6
8.5
Embodied Carbon, kg CO2/kg material 7.8
9.4
Embodied Energy, MJ/kg 110
130
Embodied Water, L/kg 500
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
230
Resilience: Unit (Modulus of Resilience), kJ/m3 670
150
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 29
22
Strength to Weight: Bending, points 24
20
Thermal Shock Resistance, points 26
17

Alloy Composition

Carbon (C), % 0.9 to 1.4
0 to 0.030
Chromium (Cr), % 27 to 32
23 to 26
Cobalt (Co), % 48.6 to 68.1
0
Copper (Cu), % 0
0 to 1.2
Iron (Fe), % 0 to 3.0
6.0 to 24
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0 to 1.0
6.0 to 9.0
Nickel (Ni), % 0 to 3.0
47 to 52
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 2.0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0
0 to 0.69
Tungsten (W), % 4.0 to 6.0
0 to 3.0