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A390.0 Aluminum vs. R30016 Cobalt

A390.0 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 A390.0 aluminum and the bottom bar is R30016 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 75
220
Elongation at Break, % 0.87 to 0.91
8.4
Fatigue Strength, MPa 70 to 100
290
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 28
85
Tensile Strength: Ultimate (UTS), MPa 190 to 290
1010
Tensile Strength: Yield (Proof), MPa 190 to 290
580

Thermal Properties

Latent Heat of Fusion, J/g 640
320
Melting Completion (Liquidus), °C 580
1360
Melting Onset (Solidus), °C 480
1270
Specific Heat Capacity, J/kg-K 880
450
Thermal Conductivity, W/m-K 130
15
Thermal Expansion, µm/m-K 20
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 20
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 67
2.0

Otherwise Unclassified Properties

Density, g/cm3 2.7
8.5
Embodied Carbon, kg CO2/kg material 7.3
7.7
Embodied Energy, MJ/kg 140
110
Embodied Water, L/kg 950
500

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 1.6 to 2.6
72
Resilience: Unit (Modulus of Resilience), kJ/m3 240 to 580
770
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 52
24
Strength to Weight: Axial, points 19 to 30
33
Strength to Weight: Bending, points 27 to 36
26
Thermal Diffusivity, mm2/s 56
3.9
Thermal Shock Resistance, points 9.0 to 14
24

Alloy Composition

Aluminum (Al), % 75.3 to 79.6
0
Carbon (C), % 0
0.9 to 1.4
Chromium (Cr), % 0
28 to 32
Cobalt (Co), % 0
49.6 to 66.9
Copper (Cu), % 4.0 to 5.0
0
Iron (Fe), % 0 to 0.5
0 to 3.0
Magnesium (Mg), % 0.45 to 0.65
0
Manganese (Mn), % 0 to 0.1
0.5 to 2.0
Molybdenum (Mo), % 0
0 to 1.5
Nickel (Ni), % 0
0 to 3.0
Silicon (Si), % 16 to 18
0.2 to 2.0
Titanium (Ti), % 0 to 0.2
0
Tungsten (W), % 0
3.5 to 5.5
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.2
0