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R30016 Cobalt vs. N07750 Nickel

R30016 cobalt belongs to the cobalt alloys classification, while N07750 nickel belongs to the nickel alloys. There are 27 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 R30016 cobalt and the bottom bar is N07750 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 8.4
25
Fatigue Strength, MPa 290
520
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 85
73
Tensile Strength: Ultimate (UTS), MPa 1010
1200
Tensile Strength: Yield (Proof), MPa 580
820

Thermal Properties

Latent Heat of Fusion, J/g 320
310
Melting Completion (Liquidus), °C 1360
1430
Melting Onset (Solidus), °C 1270
1400
Specific Heat Capacity, J/kg-K 450
460
Thermal Conductivity, W/m-K 15
13
Thermal Expansion, µm/m-K 14
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
1.5

Otherwise Unclassified Properties

Density, g/cm3 8.5
8.4
Embodied Carbon, kg CO2/kg material 7.7
10
Embodied Energy, MJ/kg 110
150
Embodied Water, L/kg 500
260

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 72
270
Resilience: Unit (Modulus of Resilience), kJ/m3 770
1770
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 33
40
Strength to Weight: Bending, points 26
30
Thermal Diffusivity, mm2/s 3.9
3.3
Thermal Shock Resistance, points 24
36

Alloy Composition

Aluminum (Al), % 0
0.4 to 1.0
Carbon (C), % 0.9 to 1.4
0 to 0.080
Chromium (Cr), % 28 to 32
14 to 17
Cobalt (Co), % 49.6 to 66.9
0 to 1.0
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 0 to 3.0
5.0 to 9.0
Manganese (Mn), % 0.5 to 2.0
0 to 1.0
Molybdenum (Mo), % 0 to 1.5
0
Nickel (Ni), % 0 to 3.0
70 to 77.7
Niobium (Nb), % 0
0.7 to 1.2
Silicon (Si), % 0.2 to 2.0
0 to 0.5
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0
2.3 to 2.8
Tungsten (W), % 3.5 to 5.5
0