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EN 2.4964 Cobalt vs. EN AC-45500 Aluminum

EN 2.4964 cobalt belongs to the cobalt alloys classification, while EN AC-45500 aluminum belongs to the aluminum alloys. There are 27 material properties with values for both materials. Properties with values for just one material (3, 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 EN 2.4964 cobalt and the bottom bar is EN AC-45500 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
70
Elongation at Break, % 40
2.8
Fatigue Strength, MPa 220
80
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 86
26
Tensile Strength: Ultimate (UTS), MPa 960
320
Tensile Strength: Yield (Proof), MPa 390
250

Thermal Properties

Latent Heat of Fusion, J/g 290
500
Melting Completion (Liquidus), °C 1630
610
Melting Onset (Solidus), °C 1550
600
Specific Heat Capacity, J/kg-K 400
900
Thermal Conductivity, W/m-K 15
150
Thermal Expansion, µm/m-K 12
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
33
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
110

Otherwise Unclassified Properties

Density, g/cm3 9.6
2.6
Embodied Carbon, kg CO2/kg material 9.8
8.0
Embodied Energy, MJ/kg 140
150
Embodied Water, L/kg 450
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
8.2
Resilience: Unit (Modulus of Resilience), kJ/m3 340
430
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 21
53
Strength to Weight: Axial, points 28
34
Strength to Weight: Bending, points 23
40
Thermal Diffusivity, mm2/s 3.9
65
Thermal Shock Resistance, points 25
15

Alloy Composition


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Aluminum (Al), % 0
90.6 to 93.1
Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 19 to 21
0
Cobalt (Co), % 46.4 to 58
0
Copper (Cu), % 0
0.2 to 0.7
Iron (Fe), % 0 to 3.0
0 to 0.25
Magnesium (Mg), % 0
0.2 to 0.45
Manganese (Mn), % 0 to 2.0
0 to 0.15
Nickel (Ni), % 9.0 to 11
0
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.4
6.5 to 7.5
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
0 to 0.2
Tungsten (W), % 14 to 16
0
Zinc (Zn), % 0
0 to 0.070
Residuals, % 0
0 to 0.1