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6182 Aluminum vs. R30075 Cobalt

6182 aluminum belongs to the aluminum alloys classification, while R30075 cobalt belongs to the cobalt alloys. There are 27 material properties with values for both materials. Properties with values for just one material (4, 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 R30075 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
210 to 250
Elongation at Break, % 6.8 to 13
12
Fatigue Strength, MPa 63 to 99
250 to 840
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
82 to 98
Tensile Strength: Ultimate (UTS), MPa 230 to 320
780 to 1280
Tensile Strength: Yield (Proof), MPa 130 to 270
480 to 840

Thermal Properties

Latent Heat of Fusion, J/g 410
320
Melting Completion (Liquidus), °C 640
1360
Melting Onset (Solidus), °C 600
1290
Specific Heat Capacity, J/kg-K 900
450
Thermal Conductivity, W/m-K 160
13
Thermal Expansion, µm/m-K 23
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 130
2.1

Otherwise Unclassified Properties

Density, g/cm3 2.7
8.4
Embodied Carbon, kg CO2/kg material 8.4
8.1
Embodied Energy, MJ/kg 150
110
Embodied Water, L/kg 1170
530

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21 to 26
84 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 520
560 to 1410
Stiffness to Weight: Axial, points 14
14 to 17
Stiffness to Weight: Bending, points 50
24 to 25
Strength to Weight: Axial, points 23 to 32
26 to 42
Strength to Weight: Bending, points 30 to 38
22 to 31
Thermal Diffusivity, mm2/s 65
3.5
Thermal Shock Resistance, points 10 to 14
21 to 29

Alloy Composition

Aluminum (Al), % 95 to 97.9
0 to 0.1
Boron (B), % 0
0 to 0.010
Carbon (C), % 0
0 to 0.35
Chromium (Cr), % 0 to 0.25
27 to 30
Cobalt (Co), % 0
58.7 to 68
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.5
0 to 0.75
Magnesium (Mg), % 0.7 to 1.2
0
Manganese (Mn), % 0.5 to 1.0
0 to 1.0
Molybdenum (Mo), % 0
5.0 to 7.0
Nickel (Ni), % 0
0 to 0.5
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0.9 to 1.3
0 to 1.0
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.1
0 to 0.1
Tungsten (W), % 0
0 to 0.2
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0.050 to 0.2
0
Residuals, % 0 to 0.15
0