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Nickel 80A vs. R30016 Cobalt

Nickel 80A belongs to the nickel alloys classification, while R30016 cobalt belongs to the cobalt alloys. They have a modest 24% 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 (8, in this case) are not shown.

For each property being compared, the top bar is nickel 80A and the bottom bar is R30016 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220
Elongation at Break, % 22
8.4
Fatigue Strength, MPa 430
290
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
85
Tensile Strength: Ultimate (UTS), MPa 1040
1010
Tensile Strength: Yield (Proof), MPa 710
580

Thermal Properties

Latent Heat of Fusion, J/g 320
320
Melting Completion (Liquidus), °C 1360
1360
Melting Onset (Solidus), °C 1310
1270
Specific Heat Capacity, J/kg-K 470
450
Thermal Conductivity, W/m-K 11
15
Thermal Expansion, µm/m-K 13
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 1.6
2.0

Otherwise Unclassified Properties

Density, g/cm3 8.3
8.5
Embodied Carbon, kg CO2/kg material 9.8
7.7
Embodied Energy, MJ/kg 140
110
Embodied Water, L/kg 280
500

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
72
Resilience: Unit (Modulus of Resilience), kJ/m3 1300
770
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 35
33
Strength to Weight: Bending, points 27
26
Thermal Diffusivity, mm2/s 2.9
3.9
Thermal Shock Resistance, points 31
24

Alloy Composition

Aluminum (Al), % 0.5 to 1.8
0
Carbon (C), % 0 to 0.1
0.9 to 1.4
Chromium (Cr), % 18 to 21
28 to 32
Cobalt (Co), % 0
49.6 to 66.9
Iron (Fe), % 0 to 3.0
0 to 3.0
Manganese (Mn), % 0 to 1.0
0.5 to 2.0
Molybdenum (Mo), % 0
0 to 1.5
Nickel (Ni), % 69.4 to 79.7
0 to 3.0
Silicon (Si), % 0 to 1.0
0.2 to 2.0
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 1.8 to 2.7
0
Tungsten (W), % 0
3.5 to 5.5