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R30016 Cobalt vs. EN AC-46200 Aluminum

R30016 cobalt belongs to the cobalt alloys classification, while EN AC-46200 aluminum belongs to the aluminum 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 R30016 cobalt and the bottom bar is EN AC-46200 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
73
Elongation at Break, % 8.4
1.1
Fatigue Strength, MPa 290
87
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 85
27
Tensile Strength: Ultimate (UTS), MPa 1010
210
Tensile Strength: Yield (Proof), MPa 580
130

Thermal Properties

Latent Heat of Fusion, J/g 320
510
Melting Completion (Liquidus), °C 1360
620
Melting Onset (Solidus), °C 1270
540
Specific Heat Capacity, J/kg-K 450
880
Thermal Conductivity, W/m-K 15
110
Thermal Expansion, µm/m-K 14
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
28
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
88

Otherwise Unclassified Properties

Density, g/cm3 8.5
2.8
Embodied Carbon, kg CO2/kg material 7.7
7.7
Embodied Energy, MJ/kg 110
140
Embodied Water, L/kg 500
1060

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 72
2.0
Resilience: Unit (Modulus of Resilience), kJ/m3 770
110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 33
21
Strength to Weight: Bending, points 26
28
Thermal Diffusivity, mm2/s 3.9
44
Thermal Shock Resistance, points 24
9.5

Alloy Composition

Aluminum (Al), % 0
82.6 to 90.3
Carbon (C), % 0.9 to 1.4
0
Chromium (Cr), % 28 to 32
0
Cobalt (Co), % 49.6 to 66.9
0
Copper (Cu), % 0
2.0 to 3.5
Iron (Fe), % 0 to 3.0
0 to 0.8
Lead (Pb), % 0
0 to 0.25
Magnesium (Mg), % 0
0.050 to 0.55
Manganese (Mn), % 0.5 to 2.0
0.15 to 0.65
Molybdenum (Mo), % 0 to 1.5
0
Nickel (Ni), % 0 to 3.0
0 to 0.35
Silicon (Si), % 0.2 to 2.0
7.5 to 9.5
Tin (Sn), % 0
0 to 0.15
Titanium (Ti), % 0
0 to 0.25
Tungsten (W), % 3.5 to 5.5
0
Zinc (Zn), % 0
0 to 1.2
Residuals, % 0
0 to 0.25