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R31233 Cobalt vs. 1080A Aluminum

R31233 cobalt belongs to the cobalt alloys classification, while 1080A aluminum belongs to the aluminum alloys. There are 27 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is R31233 cobalt and the bottom bar is 1080A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
68
Elongation at Break, % 17
2.3 to 34
Fatigue Strength, MPa 220
18 to 50
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 85
26
Tensile Strength: Ultimate (UTS), MPa 1020
74 to 140
Tensile Strength: Yield (Proof), MPa 420
17 to 120

Thermal Properties

Latent Heat of Fusion, J/g 320
400
Melting Completion (Liquidus), °C 1350
640
Melting Onset (Solidus), °C 1330
640
Specific Heat Capacity, J/kg-K 440
900
Thermal Conductivity, W/m-K 12
230
Thermal Expansion, µm/m-K 13
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
62
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
200

Otherwise Unclassified Properties

Density, g/cm3 8.6
2.7
Embodied Carbon, kg CO2/kg material 8.4
8.3
Embodied Energy, MJ/kg 110
160
Embodied Water, L/kg 480
1200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
3.1 to 19
Resilience: Unit (Modulus of Resilience), kJ/m3 410
2.1 to 100
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
50
Strength to Weight: Axial, points 33
7.6 to 15
Strength to Weight: Bending, points 26
14 to 22
Thermal Diffusivity, mm2/s 3.2
94
Thermal Shock Resistance, points 25
3.3 to 6.4

Alloy Composition

Aluminum (Al), % 0
99.8 to 100
Boron (B), % 0 to 0.015
0
Carbon (C), % 0.020 to 0.1
0
Chromium (Cr), % 23.5 to 27.5
0
Cobalt (Co), % 44.7 to 63.3
0
Copper (Cu), % 0
0 to 0.030
Gallium (Ga), % 0
0 to 0.030
Iron (Fe), % 1.0 to 5.0
0 to 0.15
Magnesium (Mg), % 0
0 to 0.020
Manganese (Mn), % 0.1 to 1.5
0 to 0.020
Molybdenum (Mo), % 4.0 to 6.0
0
Nickel (Ni), % 7.0 to 11
0
Nitrogen (N), % 0.030 to 0.12
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.050 to 1.0
0 to 0.15
Sulfur (S), % 0 to 0.020
0
Titanium (Ti), % 0
0 to 0.020
Tungsten (W), % 1.0 to 3.0
0
Zinc (Zn), % 0
0 to 0.060