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5070 Aluminum vs. R30006 Cobalt

5070 aluminum belongs to the aluminum alloys classification, while R30006 cobalt belongs to the cobalt alloys. There are 27 material properties with values for both materials. Properties with values for just one material (6, 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 5070 aluminum and the bottom bar is R30006 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
220
Elongation at Break, % 20
1.0
Fatigue Strength, MPa 150
260
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
85
Tensile Strength: Ultimate (UTS), MPa 300
900
Tensile Strength: Yield (Proof), MPa 140
540

Thermal Properties

Latent Heat of Fusion, J/g 390
320
Melting Completion (Liquidus), °C 640
1400
Melting Onset (Solidus), °C 550
1290
Specific Heat Capacity, J/kg-K 900
450
Thermal Conductivity, W/m-K 130
15
Thermal Expansion, µm/m-K 24
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 31
1.6
Electrical Conductivity: Equal Weight (Specific), % IACS 100
1.7

Otherwise Unclassified Properties

Density, g/cm3 2.7
8.6
Embodied Carbon, kg CO2/kg material 8.8
7.8
Embodied Energy, MJ/kg 150
110
Embodied Water, L/kg 1170
500

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 51
7.8
Resilience: Unit (Modulus of Resilience), kJ/m3 150
670
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
23
Strength to Weight: Axial, points 31
29
Strength to Weight: Bending, points 37
24
Thermal Diffusivity, mm2/s 53
3.9
Thermal Shock Resistance, points 14
26

Alloy Composition

Aluminum (Al), % 92.4 to 95.7
0
Carbon (C), % 0
0.9 to 1.4
Chromium (Cr), % 0 to 0.3
27 to 32
Cobalt (Co), % 0
48.6 to 68.1
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 0.4
0 to 3.0
Magnesium (Mg), % 3.5 to 4.5
0
Manganese (Mn), % 0.4 to 0.8
0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 0
0 to 3.0
Silicon (Si), % 0 to 0.25
0 to 2.0
Titanium (Ti), % 0 to 0.15
0
Tungsten (W), % 0
4.0 to 6.0
Zinc (Zn), % 0.4 to 0.8
0
Residuals, % 0 to 0.15
0