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5383 Aluminum vs. R30816 Cobalt

5383 aluminum belongs to the aluminum alloys classification, while R30816 cobalt belongs to the cobalt alloys. There are 26 material properties with values for both materials. Properties with values for just one material (7, 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 5383 aluminum and the bottom bar is R30816 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 85 to 110
280
Elastic (Young's, Tensile) Modulus, GPa 68
210
Elongation at Break, % 6.7 to 15
23
Fatigue Strength, MPa 130 to 200
250
Poisson's Ratio 0.33
0.3
Shear Modulus, GPa 26
81
Tensile Strength: Ultimate (UTS), MPa 310 to 370
1020
Tensile Strength: Yield (Proof), MPa 150 to 310
460

Thermal Properties

Latent Heat of Fusion, J/g 390
300
Melting Completion (Liquidus), °C 650
1540
Melting Onset (Solidus), °C 540
1460
Specific Heat Capacity, J/kg-K 900
420
Thermal Conductivity, W/m-K 130
13
Thermal Expansion, µm/m-K 24
12

Otherwise Unclassified Properties

Density, g/cm3 2.7
9.1
Embodied Carbon, kg CO2/kg material 9.0
20
Embodied Energy, MJ/kg 160
320
Embodied Water, L/kg 1170
440

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23 to 40
190
Resilience: Unit (Modulus of Resilience), kJ/m3 170 to 690
510
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
22
Strength to Weight: Axial, points 32 to 38
31
Strength to Weight: Bending, points 38 to 42
25
Thermal Diffusivity, mm2/s 51
3.3
Thermal Shock Resistance, points 14 to 16
28

Alloy Composition


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Aluminum (Al), % 92 to 95.3
0
Carbon (C), % 0
0.32 to 0.42
Chromium (Cr), % 0 to 0.25
19 to 21
Cobalt (Co), % 0
40 to 49.8
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 0 to 0.25
0 to 5.0
Magnesium (Mg), % 4.0 to 5.2
0
Manganese (Mn), % 0.7 to 1.0
1.0 to 2.0
Molybdenum (Mo), % 0
3.5 to 4.5
Nickel (Ni), % 0
19 to 21
Niobium (Nb), % 0
3.5 to 4.5
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.25
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tantalum (Ta), % 0
3.5 to 4.5
Titanium (Ti), % 0 to 0.15
0
Tungsten (W), % 0
3.5 to 4.5
Zinc (Zn), % 0 to 0.4
0
Zirconium (Zr), % 0 to 0.2
0
Residuals, % 0 to 0.15
0