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6016 Aluminum vs. R30016 Cobalt

6016 aluminum belongs to the aluminum alloys classification, while R30016 cobalt belongs to the cobalt 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. 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 6016 aluminum and the bottom bar is R30016 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
220
Elongation at Break, % 11 to 27
8.4
Fatigue Strength, MPa 68 to 89
290
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
85
Tensile Strength: Ultimate (UTS), MPa 200 to 280
1010
Tensile Strength: Yield (Proof), MPa 110 to 210
580

Thermal Properties

Latent Heat of Fusion, J/g 410
320
Melting Completion (Liquidus), °C 660
1360
Melting Onset (Solidus), °C 610
1270
Specific Heat Capacity, J/kg-K 900
450
Thermal Conductivity, W/m-K 190 to 210
15
Thermal Expansion, µm/m-K 23
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 48 to 54
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 160 to 180
2.0

Otherwise Unclassified Properties

Density, g/cm3 2.7
8.5
Embodied Carbon, kg CO2/kg material 8.2
7.7
Embodied Energy, MJ/kg 150
110
Embodied Water, L/kg 1180
500

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 29 to 47
72
Resilience: Unit (Modulus of Resilience), kJ/m3 82 to 340
770
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 51
24
Strength to Weight: Axial, points 21 to 29
33
Strength to Weight: Bending, points 29 to 35
26
Thermal Diffusivity, mm2/s 77 to 86
3.9
Thermal Shock Resistance, points 9.1 to 12
24

Alloy Composition

Aluminum (Al), % 96.4 to 98.8
0
Carbon (C), % 0
0.9 to 1.4
Chromium (Cr), % 0 to 0.1
28 to 32
Cobalt (Co), % 0
49.6 to 66.9
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 0 to 0.5
0 to 3.0
Magnesium (Mg), % 0.25 to 0.6
0
Manganese (Mn), % 0 to 0.2
0.5 to 2.0
Molybdenum (Mo), % 0
0 to 1.5
Nickel (Ni), % 0
0 to 3.0
Silicon (Si), % 1.0 to 1.5
0.2 to 2.0
Titanium (Ti), % 0 to 0.15
0
Tungsten (W), % 0
3.5 to 5.5
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0