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R30006 Cobalt vs. EN AC-48000 Aluminum

R30006 cobalt belongs to the cobalt alloys classification, while EN AC-48000 aluminum belongs to the aluminum alloys. There are 27 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 EN AC-48000 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
73
Elongation at Break, % 1.0
1.0
Fatigue Strength, MPa 260
85 to 86
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 85
28
Tensile Strength: Ultimate (UTS), MPa 900
220 to 310
Tensile Strength: Yield (Proof), MPa 540
210 to 270

Thermal Properties

Latent Heat of Fusion, J/g 320
570
Melting Completion (Liquidus), °C 1400
600
Melting Onset (Solidus), °C 1290
560
Specific Heat Capacity, J/kg-K 450
890
Thermal Conductivity, W/m-K 15
130
Thermal Expansion, µm/m-K 11
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
33
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
110

Otherwise Unclassified Properties

Density, g/cm3 8.6
2.7
Embodied Carbon, kg CO2/kg material 7.8
7.9
Embodied Energy, MJ/kg 110
140
Embodied Water, L/kg 500
1030

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
2.2 to 3.0
Resilience: Unit (Modulus of Resilience), kJ/m3 670
300 to 510
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 23
53
Strength to Weight: Axial, points 29
23 to 33
Strength to Weight: Bending, points 24
31 to 39
Thermal Diffusivity, mm2/s 3.9
54
Thermal Shock Resistance, points 26
10 to 15

Alloy Composition


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Aluminum (Al), % 0
80.4 to 87.2
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
0.8 to 1.5
Iron (Fe), % 0 to 3.0
0 to 0.7
Magnesium (Mg), % 0
0.8 to 1.5
Manganese (Mn), % 0
0 to 0.35
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0.7 to 1.3
Silicon (Si), % 0 to 2.0
10.5 to 13.5
Titanium (Ti), % 0
0 to 0.25
Tungsten (W), % 4.0 to 6.0
0
Zinc (Zn), % 0
0 to 0.35
Residuals, % 0
0 to 0.15