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R30006 Cobalt vs. 308.0 Aluminum

R30006 cobalt belongs to the cobalt alloys classification, while 308.0 aluminum belongs to the aluminum alloys. There are 28 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 R30006 cobalt and the bottom bar is 308.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
73
Elongation at Break, % 1.0
2.0
Fatigue Strength, MPa 260
89
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 85
27
Tensile Strength: Ultimate (UTS), MPa 900
190
Tensile Strength: Yield (Proof), MPa 540
110

Thermal Properties

Latent Heat of Fusion, J/g 320
470
Melting Completion (Liquidus), °C 1400
620
Melting Onset (Solidus), °C 1290
540
Specific Heat Capacity, J/kg-K 450
870
Thermal Conductivity, W/m-K 15
140
Thermal Expansion, µm/m-K 11
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
37
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
110

Otherwise Unclassified Properties

Calomel Potential, mV -250
-660
Density, g/cm3 8.6
2.9
Embodied Carbon, kg CO2/kg material 7.8
7.7
Embodied Energy, MJ/kg 110
140
Embodied Water, L/kg 500
1080

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
3.3
Resilience: Unit (Modulus of Resilience), kJ/m3 670
83
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
47
Strength to Weight: Axial, points 29
18
Strength to Weight: Bending, points 24
25
Thermal Diffusivity, mm2/s 3.9
55
Thermal Shock Resistance, points 26
9.2

Alloy Composition


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Aluminum (Al), % 0
85.7 to 91
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
4.0 to 5.0
Iron (Fe), % 0 to 3.0
0 to 1.0
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0
0 to 0.5
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0
Silicon (Si), % 0 to 2.0
5.0 to 6.0
Titanium (Ti), % 0
0 to 0.25
Tungsten (W), % 4.0 to 6.0
0
Zinc (Zn), % 0
0 to 1.0
Residuals, % 0
0 to 0.5