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EN 2.4964 Cobalt vs. 5657 Aluminum

EN 2.4964 cobalt belongs to the cobalt alloys classification, while 5657 aluminum belongs to the aluminum alloys. There are 27 material properties with values for both materials. Properties with values for just one material (4, 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 5657 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
68
Elongation at Break, % 40
6.6 to 15
Fatigue Strength, MPa 220
74 to 88
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 86
26
Tensile Strength: Ultimate (UTS), MPa 960
150 to 200
Tensile Strength: Yield (Proof), MPa 390
140 to 170

Thermal Properties

Latent Heat of Fusion, J/g 290
400
Melting Completion (Liquidus), °C 1630
660
Melting Onset (Solidus), °C 1550
640
Specific Heat Capacity, J/kg-K 400
900
Thermal Conductivity, W/m-K 15
210
Thermal Expansion, µm/m-K 12
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
54
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
180

Otherwise Unclassified Properties

Density, g/cm3 9.6
2.7
Embodied Carbon, kg CO2/kg material 9.8
8.4
Embodied Energy, MJ/kg 140
160
Embodied Water, L/kg 450
1200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
9.7 to 27
Resilience: Unit (Modulus of Resilience), kJ/m3 340
140 to 200
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 21
50
Strength to Weight: Axial, points 28
15 to 20
Strength to Weight: Bending, points 23
23 to 28
Thermal Diffusivity, mm2/s 3.9
84
Thermal Shock Resistance, points 25
6.7 to 8.6

Alloy Composition


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Aluminum (Al), % 0
98.5 to 99.4
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 0.1
Gallium (Ga), % 0
0 to 0.030
Iron (Fe), % 0 to 3.0
0 to 0.1
Magnesium (Mg), % 0
0.6 to 1.0
Manganese (Mn), % 0 to 2.0
0 to 0.030
Nickel (Ni), % 9.0 to 11
0
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.4
0 to 0.080
Sulfur (S), % 0 to 0.015
0
Tungsten (W), % 14 to 16
0
Vanadium (V), % 0
0 to 0.050
Zinc (Zn), % 0
0 to 0.050
Residuals, % 0
0 to 0.050