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N07750 Nickel vs. R31233 Cobalt

N07750 nickel belongs to the nickel alloys classification, while R31233 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 (4, in this case) are not shown.

For each property being compared, the top bar is N07750 nickel and the bottom bar is R31233 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220
Elongation at Break, % 25
17
Fatigue Strength, MPa 520
220
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
85
Tensile Strength: Ultimate (UTS), MPa 1200
1020
Tensile Strength: Yield (Proof), MPa 820
420

Thermal Properties

Latent Heat of Fusion, J/g 310
320
Melting Completion (Liquidus), °C 1430
1350
Melting Onset (Solidus), °C 1400
1330
Specific Heat Capacity, J/kg-K 460
440
Thermal Conductivity, W/m-K 13
12
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 1.5
2.1

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.6
Embodied Carbon, kg CO2/kg material 10
8.4
Embodied Energy, MJ/kg 150
110
Embodied Water, L/kg 260
480

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
140
Resilience: Unit (Modulus of Resilience), kJ/m3 1770
410
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 40
33
Strength to Weight: Bending, points 30
26
Thermal Diffusivity, mm2/s 3.3
3.2
Thermal Shock Resistance, points 36
25

Alloy Composition

Aluminum (Al), % 0.4 to 1.0
0
Boron (B), % 0
0 to 0.015
Carbon (C), % 0 to 0.080
0.020 to 0.1
Chromium (Cr), % 14 to 17
23.5 to 27.5
Cobalt (Co), % 0 to 1.0
44.7 to 63.3
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 5.0 to 9.0
1.0 to 5.0
Manganese (Mn), % 0 to 1.0
0.1 to 1.5
Molybdenum (Mo), % 0
4.0 to 6.0
Nickel (Ni), % 70 to 77.7
7.0 to 11
Niobium (Nb), % 0.7 to 1.2
0
Nitrogen (N), % 0
0.030 to 0.12
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.5
0.050 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.020
Titanium (Ti), % 2.3 to 2.8
0
Tungsten (W), % 0
1.0 to 3.0