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EN 2.4964 Cobalt vs. 4006 Aluminum

EN 2.4964 cobalt belongs to the cobalt alloys classification, while 4006 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 4006 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
69
Elongation at Break, % 40
3.4 to 24
Fatigue Strength, MPa 220
35 to 110
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 86
26
Tensile Strength: Ultimate (UTS), MPa 960
110 to 160
Tensile Strength: Yield (Proof), MPa 390
62 to 140

Thermal Properties

Latent Heat of Fusion, J/g 290
410
Melting Completion (Liquidus), °C 1630
640
Melting Onset (Solidus), °C 1550
620
Specific Heat Capacity, J/kg-K 400
900
Thermal Conductivity, W/m-K 15
220
Thermal Expansion, µm/m-K 12
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
56
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
8.1
Embodied Energy, MJ/kg 140
150
Embodied Water, L/kg 450
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
5.1 to 26
Resilience: Unit (Modulus of Resilience), kJ/m3 340
28 to 130
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 21
50
Strength to Weight: Axial, points 28
11 to 16
Strength to Weight: Bending, points 23
19 to 24
Thermal Diffusivity, mm2/s 3.9
89
Thermal Shock Resistance, points 25
4.9 to 7.0

Alloy Composition

Aluminum (Al), % 0
97.4 to 98.7
Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 19 to 21
0 to 0.2
Cobalt (Co), % 46.4 to 58
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 0 to 3.0
0.5 to 0.8
Magnesium (Mg), % 0
0 to 0.010
Manganese (Mn), % 0 to 2.0
0 to 0.050
Nickel (Ni), % 9.0 to 11
0
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.4
0.8 to 1.2
Sulfur (S), % 0 to 0.015
0
Tungsten (W), % 14 to 16
0
Zinc (Zn), % 0
0 to 0.050
Residuals, % 0
0 to 0.15