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R30006 Cobalt vs. EN AC-45100 Aluminum

R30006 cobalt belongs to the cobalt alloys classification, while EN AC-45100 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-45100 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
72
Elongation at Break, % 1.0
1.0 to 2.8
Fatigue Strength, MPa 260
82 to 99
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 85
27
Tensile Strength: Ultimate (UTS), MPa 900
300 to 360
Tensile Strength: Yield (Proof), MPa 540
210 to 320

Thermal Properties

Latent Heat of Fusion, J/g 320
470
Melting Completion (Liquidus), °C 1400
630
Melting Onset (Solidus), °C 1290
550
Specific Heat Capacity, J/kg-K 450
890
Thermal Conductivity, W/m-K 15
140
Thermal Expansion, µm/m-K 11
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
30
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
95

Otherwise Unclassified Properties

Density, g/cm3 8.6
2.8
Embodied Carbon, kg CO2/kg material 7.8
7.9
Embodied Energy, MJ/kg 110
150
Embodied Water, L/kg 500
1100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
3.5 to 7.6
Resilience: Unit (Modulus of Resilience), kJ/m3 670
290 to 710
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
49
Strength to Weight: Axial, points 29
30 to 35
Strength to Weight: Bending, points 24
35 to 39
Thermal Diffusivity, mm2/s 3.9
54
Thermal Shock Resistance, points 26
14 to 16

Alloy Composition


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Aluminum (Al), % 0
88 to 92.8
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
2.6 to 3.6
Iron (Fe), % 0 to 3.0
0 to 0.6
Lead (Pb), % 0
0 to 0.1
Magnesium (Mg), % 0
0.15 to 0.45
Manganese (Mn), % 0
0 to 0.55
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0 to 0.1
Silicon (Si), % 0 to 2.0
4.5 to 6.0
Tin (Sn), % 0
0 to 0.050
Titanium (Ti), % 0
0 to 0.25
Tungsten (W), % 4.0 to 6.0
0
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.15