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R30006 Cobalt vs. 2095 Aluminum

R30006 cobalt belongs to the cobalt alloys classification, while 2095 aluminum belongs to the aluminum 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 R30006 cobalt and the bottom bar is 2095 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
70
Elongation at Break, % 1.0
8.5
Fatigue Strength, MPa 260
200
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 85
26
Tensile Strength: Ultimate (UTS), MPa 900
700
Tensile Strength: Yield (Proof), MPa 540
610

Thermal Properties

Latent Heat of Fusion, J/g 320
390
Melting Completion (Liquidus), °C 1400
660
Melting Onset (Solidus), °C 1290
540
Specific Heat Capacity, J/kg-K 450
910
Thermal Conductivity, W/m-K 15
130
Thermal Expansion, µm/m-K 11
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
35
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
110

Otherwise Unclassified Properties

Density, g/cm3 8.6
3.0
Embodied Carbon, kg CO2/kg material 7.8
8.6
Embodied Energy, MJ/kg 110
160
Embodied Water, L/kg 500
1470

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
57
Resilience: Unit (Modulus of Resilience), kJ/m3 670
2640
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
46
Strength to Weight: Axial, points 29
65
Strength to Weight: Bending, points 24
59
Thermal Diffusivity, mm2/s 3.9
49
Thermal Shock Resistance, points 26
31

Alloy Composition


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Aluminum (Al), % 0
91.3 to 94.9
Carbon (C), % 0.9 to 1.4
0
Chromium (Cr), % 27 to 32
0
Cobalt (Co), % 48.6 to 68.1
0
Copper (Cu), % 0
3.9 to 4.6
Iron (Fe), % 0 to 3.0
0 to 0.15
Lithium (Li), % 0
0.7 to 1.5
Magnesium (Mg), % 0
0.25 to 0.8
Manganese (Mn), % 0
0 to 0.25
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0
Silicon (Si), % 0 to 2.0
0 to 0.12
Silver (Ag), % 0
0.25 to 0.6
Titanium (Ti), % 0
0 to 0.1
Tungsten (W), % 4.0 to 6.0
0
Zinc (Zn), % 0
0 to 0.25
Zirconium (Zr), % 0
0.040 to 0.18
Residuals, % 0
0 to 0.15