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5019 Aluminum vs. R30001 Cobalt

5019 aluminum belongs to the aluminum alloys classification, while R30001 cobalt belongs to the cobalt alloys. There are 23 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 5019 aluminum and the bottom bar is R30001 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
220
Elongation at Break, % 2.2 to 18
1.0
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
86
Tensile Strength: Ultimate (UTS), MPa 280 to 360
620

Thermal Properties

Latent Heat of Fusion, J/g 400
310
Melting Completion (Liquidus), °C 640
1530
Melting Onset (Solidus), °C 540
1260
Specific Heat Capacity, J/kg-K 900
430
Thermal Conductivity, W/m-K 130
15
Thermal Expansion, µm/m-K 24
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 29
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 98
1.8

Otherwise Unclassified Properties

Density, g/cm3 2.7
9.0
Embodied Carbon, kg CO2/kg material 9.0
8.9
Embodied Energy, MJ/kg 150
130
Embodied Water, L/kg 1180
460

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 51
22
Strength to Weight: Axial, points 29 to 38
19
Strength to Weight: Bending, points 35 to 42
18
Thermal Diffusivity, mm2/s 52
3.7
Thermal Shock Resistance, points 13 to 16
19

Alloy Composition


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Aluminum (Al), % 91.5 to 95.3
0
Carbon (C), % 0
2.0 to 3.0
Chromium (Cr), % 0 to 0.2
28 to 32
Cobalt (Co), % 0
43 to 59
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.5
0 to 3.0
Magnesium (Mg), % 4.5 to 5.6
0
Manganese (Mn), % 0.1 to 0.6
0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 0
0 to 3.0
Silicon (Si), % 0 to 0.4
0 to 2.0
Titanium (Ti), % 0 to 0.2
0
Tungsten (W), % 0
11 to 13
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0