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3005 Aluminum vs. R30006 Cobalt

3005 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 (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 3005 aluminum and the bottom bar is R30006 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
220
Elongation at Break, % 1.1 to 16
1.0
Fatigue Strength, MPa 53 to 100
260
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
85
Tensile Strength: Ultimate (UTS), MPa 140 to 270
900
Tensile Strength: Yield (Proof), MPa 51 to 240
540

Thermal Properties

Latent Heat of Fusion, J/g 400
320
Melting Completion (Liquidus), °C 660
1400
Melting Onset (Solidus), °C 640
1290
Specific Heat Capacity, J/kg-K 900
450
Thermal Conductivity, W/m-K 160
15
Thermal Expansion, µm/m-K 23
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 42
1.6
Electrical Conductivity: Equal Weight (Specific), % IACS 140
1.7

Otherwise Unclassified Properties

Density, g/cm3 2.8
8.6
Embodied Carbon, kg CO2/kg material 8.2
7.8
Embodied Energy, MJ/kg 150
110
Embodied Water, L/kg 1180
500

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.2 to 18
7.8
Resilience: Unit (Modulus of Resilience), kJ/m3 18 to 390
670
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 49
23
Strength to Weight: Axial, points 14 to 27
29
Strength to Weight: Bending, points 21 to 33
24
Thermal Diffusivity, mm2/s 64
3.9
Thermal Shock Resistance, points 6.0 to 12
26

Alloy Composition

Aluminum (Al), % 95.7 to 98.8
0
Carbon (C), % 0
0.9 to 1.4
Chromium (Cr), % 0 to 0.1
27 to 32
Cobalt (Co), % 0
48.6 to 68.1
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 0 to 0.7
0 to 3.0
Magnesium (Mg), % 0.2 to 0.6
0
Manganese (Mn), % 1.0 to 1.5
0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 0
0 to 3.0
Silicon (Si), % 0 to 0.6
0 to 2.0
Titanium (Ti), % 0 to 0.1
0
Tungsten (W), % 0
4.0 to 6.0
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0