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6182 Aluminum vs. R30012 Cobalt

6182 aluminum belongs to the aluminum alloys classification, while R30012 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 6182 aluminum and the bottom bar is R30012 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
220
Elongation at Break, % 6.8 to 13
1.0
Fatigue Strength, MPa 63 to 99
320
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
86
Tensile Strength: Ultimate (UTS), MPa 230 to 320
830
Tensile Strength: Yield (Proof), MPa 130 to 270
650

Thermal Properties

Latent Heat of Fusion, J/g 410
320
Melting Completion (Liquidus), °C 640
1470
Melting Onset (Solidus), °C 600
1280
Specific Heat Capacity, J/kg-K 900
440
Thermal Conductivity, W/m-K 160
15
Thermal Expansion, µm/m-K 23
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 130
1.8

Otherwise Unclassified Properties

Density, g/cm3 2.7
8.8
Embodied Carbon, kg CO2/kg material 8.4
8.3
Embodied Energy, MJ/kg 150
120
Embodied Water, L/kg 1170
480

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21 to 26
7.7
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 520
960
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
23
Strength to Weight: Axial, points 23 to 32
26
Strength to Weight: Bending, points 30 to 38
22
Thermal Diffusivity, mm2/s 65
3.8
Thermal Shock Resistance, points 10 to 14
23

Alloy Composition

Aluminum (Al), % 95 to 97.9
0
Carbon (C), % 0
1.4 to 2.0
Chromium (Cr), % 0 to 0.25
27 to 32
Cobalt (Co), % 0
47.5 to 64.1
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.5
0 to 3.0
Magnesium (Mg), % 0.7 to 1.2
0
Manganese (Mn), % 0.5 to 1.0
0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 0
0 to 3.0
Silicon (Si), % 0.9 to 1.3
0 to 2.0
Titanium (Ti), % 0 to 0.1
0
Tungsten (W), % 0
7.5 to 9.5
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0.050 to 0.2
0
Residuals, % 0 to 0.15
0