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R31538 Cobalt vs. 6016 Aluminum

R31538 cobalt belongs to the cobalt alloys classification, while 6016 aluminum belongs to the aluminum alloys. There are 27 material properties with values for both materials. Properties with values for just one material (6, 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 R31538 cobalt and the bottom bar is 6016 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
69
Elongation at Break, % 13 to 23
11 to 27
Fatigue Strength, MPa 310 to 480
68 to 89
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 86
26
Tensile Strength: Ultimate (UTS), MPa 1020 to 1360
200 to 280
Tensile Strength: Yield (Proof), MPa 580 to 930
110 to 210

Thermal Properties

Latent Heat of Fusion, J/g 320
410
Melting Completion (Liquidus), °C 1360
660
Melting Onset (Solidus), °C 1290
610
Specific Heat Capacity, J/kg-K 450
900
Thermal Conductivity, W/m-K 13
190 to 210
Thermal Expansion, µm/m-K 13
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
48 to 54
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
160 to 180

Otherwise Unclassified Properties

Density, g/cm3 8.4
2.7
Embodied Carbon, kg CO2/kg material 8.1
8.2
Embodied Energy, MJ/kg 110
150
Embodied Water, L/kg 530
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 200
29 to 47
Resilience: Unit (Modulus of Resilience), kJ/m3 750 to 1920
82 to 340
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 24
51
Strength to Weight: Axial, points 34 to 45
21 to 29
Strength to Weight: Bending, points 27 to 32
29 to 35
Thermal Diffusivity, mm2/s 3.5
77 to 86
Thermal Shock Resistance, points 25 to 33
9.1 to 12

Alloy Composition


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Aluminum (Al), % 0
96.4 to 98.8
Carbon (C), % 0.15 to 0.35
0
Chromium (Cr), % 26 to 30
0 to 0.1
Cobalt (Co), % 58.7 to 68.9
0
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 0 to 0.75
0 to 0.5
Magnesium (Mg), % 0
0.25 to 0.6
Manganese (Mn), % 0 to 1.0
0 to 0.2
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
0
Nitrogen (N), % 0 to 0.25
0
Silicon (Si), % 0 to 1.0
1.0 to 1.5
Titanium (Ti), % 0
0 to 0.15
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.15