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EN 2.4964 Cobalt vs. EN AC-47000 Aluminum

EN 2.4964 cobalt belongs to the cobalt alloys classification, while EN AC-47000 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-47000 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
73
Elongation at Break, % 40
1.7
Fatigue Strength, MPa 220
68
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 86
27
Tensile Strength: Ultimate (UTS), MPa 960
180
Tensile Strength: Yield (Proof), MPa 390
97

Thermal Properties

Latent Heat of Fusion, J/g 290
570
Melting Completion (Liquidus), °C 1630
590
Melting Onset (Solidus), °C 1550
570
Specific Heat Capacity, J/kg-K 400
900
Thermal Conductivity, W/m-K 15
130
Thermal Expansion, µm/m-K 12
21

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
7.7
Embodied Energy, MJ/kg 140
140
Embodied Water, L/kg 450
1040

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
2.5
Resilience: Unit (Modulus of Resilience), kJ/m3 340
65
Stiffness to Weight: Axial, points 13
16
Stiffness to Weight: Bending, points 21
54
Strength to Weight: Axial, points 28
19
Strength to Weight: Bending, points 23
27
Thermal Diffusivity, mm2/s 3.9
55
Thermal Shock Resistance, points 25
8.3

Alloy Composition


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Aluminum (Al), % 0
82.1 to 89.5
Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 19 to 21
0 to 0.1
Cobalt (Co), % 46.4 to 58
0
Copper (Cu), % 0
0 to 1.0
Iron (Fe), % 0 to 3.0
0 to 0.8
Lead (Pb), % 0
0 to 0.2
Magnesium (Mg), % 0
0 to 0.35
Manganese (Mn), % 0 to 2.0
0.050 to 0.55
Nickel (Ni), % 9.0 to 11
0 to 0.3
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.4
10.5 to 13.5
Sulfur (S), % 0 to 0.015
0
Tin (Sn), % 0
0 to 0.1
Titanium (Ti), % 0
0 to 0.2
Tungsten (W), % 14 to 16
0
Zinc (Zn), % 0
0 to 0.55
Residuals, % 0
0 to 0.25