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6360 Aluminum vs. R31539 Cobalt

6360 aluminum belongs to the aluminum alloys classification, while R31539 cobalt belongs to the cobalt alloys. There are 27 material properties with values for both materials. Properties with values for just one material (5, 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 6360 aluminum and the bottom bar is R31539 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
220
Elongation at Break, % 9.0 to 18
13 to 22
Fatigue Strength, MPa 31 to 67
310 to 480
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
86
Tensile Strength: Ultimate (UTS), MPa 120 to 220
1000 to 1340
Tensile Strength: Yield (Proof), MPa 57 to 170
590 to 940

Thermal Properties

Latent Heat of Fusion, J/g 400
320
Melting Completion (Liquidus), °C 640
1360
Melting Onset (Solidus), °C 630
1290
Specific Heat Capacity, J/kg-K 900
450
Thermal Conductivity, W/m-K 210
13
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 54
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 180
2.1

Otherwise Unclassified Properties

Density, g/cm3 2.7
8.4
Embodied Carbon, kg CO2/kg material 8.3
8.2
Embodied Energy, MJ/kg 150
110
Embodied Water, L/kg 1190
530

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 14 to 19
140 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 24 to 210
780 to 2000
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 13 to 23
33 to 44
Strength to Weight: Bending, points 20 to 30
27 to 32
Thermal Diffusivity, mm2/s 86
3.5
Thermal Shock Resistance, points 5.5 to 9.9
24 to 32

Alloy Composition

Aluminum (Al), % 97.8 to 99.3
0.3 to 1.0
Carbon (C), % 0
0 to 0.14
Chromium (Cr), % 0 to 0.050
26 to 30
Cobalt (Co), % 0
57.7 to 68.7
Copper (Cu), % 0 to 0.15
0
Iron (Fe), % 0.1 to 0.3
0 to 0.75
Lanthanum (La), % 0
0.030 to 0.2
Magnesium (Mg), % 0.25 to 0.45
0
Manganese (Mn), % 0.020 to 0.15
0 to 1.0
Molybdenum (Mo), % 0
5.0 to 7.0
Nickel (Ni), % 0
0 to 1.0
Nitrogen (N), % 0
0 to 0.25
Silicon (Si), % 0.35 to 0.8
0 to 1.0
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0