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EN AC-46000 Aluminum vs. R30016 Cobalt

EN AC-46000 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 (8, 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 EN AC-46000 aluminum and the bottom bar is R30016 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
220
Elongation at Break, % 1.0
8.4
Fatigue Strength, MPa 110
290
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 28
85
Tensile Strength: Ultimate (UTS), MPa 270
1010
Tensile Strength: Yield (Proof), MPa 160
580

Thermal Properties

Latent Heat of Fusion, J/g 530
320
Melting Completion (Liquidus), °C 620
1360
Melting Onset (Solidus), °C 530
1270
Specific Heat Capacity, J/kg-K 880
450
Thermal Conductivity, W/m-K 100
15
Thermal Expansion, µm/m-K 21
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 82
2.0

Otherwise Unclassified Properties

Density, g/cm3 2.8
8.5
Embodied Carbon, kg CO2/kg material 7.6
7.7
Embodied Energy, MJ/kg 140
110
Embodied Water, L/kg 1040
500

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.3
72
Resilience: Unit (Modulus of Resilience), kJ/m3 170
770
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 49
24
Strength to Weight: Axial, points 26
33
Strength to Weight: Bending, points 33
26
Thermal Diffusivity, mm2/s 42
3.9
Thermal Shock Resistance, points 12
24

Alloy Composition

Aluminum (Al), % 79.7 to 90
0
Carbon (C), % 0
0.9 to 1.4
Chromium (Cr), % 0 to 0.15
28 to 32
Cobalt (Co), % 0
49.6 to 66.9
Copper (Cu), % 2.0 to 4.0
0
Iron (Fe), % 0 to 1.3
0 to 3.0
Lead (Pb), % 0 to 0.35
0
Magnesium (Mg), % 0.050 to 0.55
0
Manganese (Mn), % 0 to 0.55
0.5 to 2.0
Molybdenum (Mo), % 0
0 to 1.5
Nickel (Ni), % 0 to 0.55
0 to 3.0
Silicon (Si), % 8.0 to 11
0.2 to 2.0
Tin (Sn), % 0 to 0.15
0
Titanium (Ti), % 0 to 0.25
0
Tungsten (W), % 0
3.5 to 5.5
Zinc (Zn), % 0 to 1.2
0
Residuals, % 0 to 0.25
0