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5457 Aluminum vs. R30001 Cobalt

5457 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 (10, 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 5457 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, % 6.0 to 22
1.0
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
86
Tensile Strength: Ultimate (UTS), MPa 130 to 210
620

Thermal Properties

Latent Heat of Fusion, J/g 400
310
Melting Completion (Liquidus), °C 660
1530
Melting Onset (Solidus), °C 630
1260
Specific Heat Capacity, J/kg-K 900
430
Thermal Conductivity, W/m-K 180
15
Thermal Expansion, µm/m-K 24
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 46
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 150
1.8

Otherwise Unclassified Properties

Density, g/cm3 2.7
9.0
Embodied Carbon, kg CO2/kg material 8.4
8.9
Embodied Energy, MJ/kg 160
130
Embodied Water, L/kg 1190
460

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
22
Strength to Weight: Axial, points 13 to 21
19
Strength to Weight: Bending, points 21 to 28
18
Thermal Diffusivity, mm2/s 72
3.7
Thermal Shock Resistance, points 5.7 to 9.0
19

Alloy Composition


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Aluminum (Al), % 97.8 to 99.05
0
Carbon (C), % 0
2.0 to 3.0
Chromium (Cr), % 0
28 to 32
Cobalt (Co), % 0
43 to 59
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 0 to 0.1
0 to 3.0
Magnesium (Mg), % 0.8 to 1.2
0
Manganese (Mn), % 0.15 to 0.45
0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 0
0 to 3.0
Silicon (Si), % 0 to 0.080
0 to 2.0
Tungsten (W), % 0
11 to 13
Vanadium (V), % 0 to 0.050
0
Zinc (Zn), % 0 to 0.050
0
Residuals, % 0 to 0.1
0