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357.0 Aluminum vs. R30016 Cobalt

357.0 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 (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 357.0 aluminum and the bottom bar is R30016 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
220
Elongation at Break, % 3.4
8.4
Fatigue Strength, MPa 76
290
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
85
Tensile Strength: Ultimate (UTS), MPa 350
1010
Tensile Strength: Yield (Proof), MPa 300
580

Thermal Properties

Latent Heat of Fusion, J/g 500
320
Melting Completion (Liquidus), °C 620
1360
Melting Onset (Solidus), °C 560
1270
Specific Heat Capacity, J/kg-K 910
450
Thermal Conductivity, W/m-K 150
15
Thermal Expansion, µm/m-K 21
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 140
2.0

Otherwise Unclassified Properties

Density, g/cm3 2.6
8.5
Embodied Carbon, kg CO2/kg material 8.0
7.7
Embodied Energy, MJ/kg 150
110
Embodied Water, L/kg 1110
500

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
72
Resilience: Unit (Modulus of Resilience), kJ/m3 620
770
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 53
24
Strength to Weight: Axial, points 38
33
Strength to Weight: Bending, points 43
26
Thermal Diffusivity, mm2/s 64
3.9
Thermal Shock Resistance, points 17
24

Alloy Composition

Aluminum (Al), % 91.3 to 93.1
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), % 0 to 0.050
0
Iron (Fe), % 0 to 0.15
0 to 3.0
Magnesium (Mg), % 0.45 to 0.6
0
Manganese (Mn), % 0 to 0.030
0.5 to 2.0
Molybdenum (Mo), % 0
0 to 1.5
Nickel (Ni), % 0
0 to 3.0
Silicon (Si), % 6.5 to 7.5
0.2 to 2.0
Titanium (Ti), % 0 to 0.2
0
Tungsten (W), % 0
3.5 to 5.5
Zinc (Zn), % 0 to 0.050
0
Residuals, % 0 to 0.15
0