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R30006 Cobalt vs. B390.0 Aluminum

R30006 cobalt belongs to the cobalt alloys classification, while B390.0 aluminum belongs to the aluminum 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 R30006 cobalt and the bottom bar is B390.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
76
Elongation at Break, % 1.0
0.88
Fatigue Strength, MPa 260
170
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 85
29
Tensile Strength: Ultimate (UTS), MPa 900
320
Tensile Strength: Yield (Proof), MPa 540
250

Thermal Properties

Latent Heat of Fusion, J/g 320
640
Melting Completion (Liquidus), °C 1400
580
Melting Onset (Solidus), °C 1290
580
Specific Heat Capacity, J/kg-K 450
880
Thermal Conductivity, W/m-K 15
130
Thermal Expansion, µm/m-K 11
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
27
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
88

Otherwise Unclassified Properties

Density, g/cm3 8.6
2.8
Embodied Carbon, kg CO2/kg material 7.8
7.3
Embodied Energy, MJ/kg 110
130
Embodied Water, L/kg 500
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
2.6
Resilience: Unit (Modulus of Resilience), kJ/m3 670
410
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 23
51
Strength to Weight: Axial, points 29
32
Strength to Weight: Bending, points 24
38
Thermal Diffusivity, mm2/s 3.9
55
Thermal Shock Resistance, points 26
15

Alloy Composition


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Aluminum (Al), % 0
72.7 to 79.6
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 1.3
Magnesium (Mg), % 0
0.45 to 0.65
Manganese (Mn), % 0
0 to 0.5
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0 to 0.1
Silicon (Si), % 0 to 2.0
16 to 18
Titanium (Ti), % 0
0 to 0.1
Tungsten (W), % 4.0 to 6.0
0
Zinc (Zn), % 0
0 to 1.5
Residuals, % 0
0 to 0.2