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R30016 Cobalt vs. 357.0 Aluminum

R30016 cobalt belongs to the cobalt alloys classification, while 357.0 aluminum belongs to the aluminum 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 R30016 cobalt and the bottom bar is 357.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

Aluminum (Al), % 0
91.3 to 93.1
Carbon (C), % 0.9 to 1.4
0
Chromium (Cr), % 28 to 32
0
Cobalt (Co), % 49.6 to 66.9
0
Copper (Cu), % 0
0 to 0.050
Iron (Fe), % 0 to 3.0
0 to 0.15
Magnesium (Mg), % 0
0.45 to 0.6
Manganese (Mn), % 0.5 to 2.0
0 to 0.030
Molybdenum (Mo), % 0 to 1.5
0
Nickel (Ni), % 0 to 3.0
0
Silicon (Si), % 0.2 to 2.0
6.5 to 7.5
Titanium (Ti), % 0
0 to 0.2
Tungsten (W), % 3.5 to 5.5
0
Zinc (Zn), % 0
0 to 0.050
Residuals, % 0
0 to 0.15