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EN 2.4964 Cobalt vs. EN AC-43000 Aluminum

EN 2.4964 cobalt belongs to the cobalt alloys classification, while EN AC-43000 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-43000 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
71
Elongation at Break, % 40
1.1 to 2.5
Fatigue Strength, MPa 220
68 to 76
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 86
27
Tensile Strength: Ultimate (UTS), MPa 960
180 to 270
Tensile Strength: Yield (Proof), MPa 390
97 to 230

Thermal Properties

Latent Heat of Fusion, J/g 290
540
Melting Completion (Liquidus), °C 1630
600
Melting Onset (Solidus), °C 1550
590
Specific Heat Capacity, J/kg-K 400
900
Thermal Conductivity, W/m-K 15
140
Thermal Expansion, µm/m-K 12
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
38
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
130

Otherwise Unclassified Properties

Density, g/cm3 9.6
2.6
Embodied Carbon, kg CO2/kg material 9.8
7.8
Embodied Energy, MJ/kg 140
150
Embodied Water, L/kg 450
1070

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
2.9 to 5.7
Resilience: Unit (Modulus of Resilience), kJ/m3 340
66 to 360
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 21
54
Strength to Weight: Axial, points 28
20 to 29
Strength to Weight: Bending, points 23
28 to 36
Thermal Diffusivity, mm2/s 3.9
60
Thermal Shock Resistance, points 25
8.6 to 12

Alloy Composition


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Aluminum (Al), % 0
87 to 90.8
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 to 0.050
Iron (Fe), % 0 to 3.0
0 to 0.55
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 0
0.2 to 0.45
Manganese (Mn), % 0 to 2.0
0 to 0.45
Nickel (Ni), % 9.0 to 11
0 to 0.050
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.4
9.0 to 11
Sulfur (S), % 0 to 0.015
0
Tin (Sn), % 0
0 to 0.050
Titanium (Ti), % 0
0 to 0.15
Tungsten (W), % 14 to 16
0
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15