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5019 Aluminum vs. R31233 Cobalt

5019 aluminum belongs to the aluminum alloys classification, while R31233 cobalt belongs to the cobalt alloys. There are 27 material properties with values for both materials. Properties with values for just one material (3, 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 5019 aluminum and the bottom bar is R31233 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
220
Elongation at Break, % 2.2 to 18
17
Fatigue Strength, MPa 100 to 160
220
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
85
Tensile Strength: Ultimate (UTS), MPa 280 to 360
1020
Tensile Strength: Yield (Proof), MPa 120 to 300
420

Thermal Properties

Latent Heat of Fusion, J/g 400
320
Melting Completion (Liquidus), °C 640
1350
Melting Onset (Solidus), °C 540
1330
Specific Heat Capacity, J/kg-K 900
440
Thermal Conductivity, W/m-K 130
12
Thermal Expansion, µm/m-K 24
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 29
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 98
2.1

Otherwise Unclassified Properties

Density, g/cm3 2.7
8.6
Embodied Carbon, kg CO2/kg material 9.0
8.4
Embodied Energy, MJ/kg 150
110
Embodied Water, L/kg 1180
480

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.6 to 40
140
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 650
410
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 51
23
Strength to Weight: Axial, points 29 to 38
33
Strength to Weight: Bending, points 35 to 42
26
Thermal Diffusivity, mm2/s 52
3.2
Thermal Shock Resistance, points 13 to 16
25

Alloy Composition


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Aluminum (Al), % 91.5 to 95.3
0
Boron (B), % 0
0 to 0.015
Carbon (C), % 0
0.020 to 0.1
Chromium (Cr), % 0 to 0.2
23.5 to 27.5
Cobalt (Co), % 0
44.7 to 63.3
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.5
1.0 to 5.0
Magnesium (Mg), % 4.5 to 5.6
0
Manganese (Mn), % 0.1 to 0.6
0.1 to 1.5
Molybdenum (Mo), % 0
4.0 to 6.0
Nickel (Ni), % 0
7.0 to 11
Nitrogen (N), % 0
0.030 to 0.12
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.4
0.050 to 1.0
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0 to 0.2
0
Tungsten (W), % 0
1.0 to 3.0
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0