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EN 2.4964 Cobalt vs. EN AC-48000 Aluminum

EN 2.4964 cobalt belongs to the cobalt alloys classification, while EN AC-48000 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-48000 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
73
Elongation at Break, % 40
1.0
Fatigue Strength, MPa 220
85 to 86
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 86
28
Tensile Strength: Ultimate (UTS), MPa 960
220 to 310
Tensile Strength: Yield (Proof), MPa 390
210 to 270

Thermal Properties

Latent Heat of Fusion, J/g 290
570
Melting Completion (Liquidus), °C 1630
600
Melting Onset (Solidus), °C 1550
560
Specific Heat Capacity, J/kg-K 400
890
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
2.7
Embodied Carbon, kg CO2/kg material 9.8
7.9
Embodied Energy, MJ/kg 140
140
Embodied Water, L/kg 450
1030

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
2.2 to 3.0
Resilience: Unit (Modulus of Resilience), kJ/m3 340
300 to 510
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 21
53
Strength to Weight: Axial, points 28
23 to 33
Strength to Weight: Bending, points 23
31 to 39
Thermal Diffusivity, mm2/s 3.9
54
Thermal Shock Resistance, points 25
10 to 15

Alloy Composition

Aluminum (Al), % 0
80.4 to 87.2
Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 19 to 21
0
Cobalt (Co), % 46.4 to 58
0
Copper (Cu), % 0
0.8 to 1.5
Iron (Fe), % 0 to 3.0
0 to 0.7
Magnesium (Mg), % 0
0.8 to 1.5
Manganese (Mn), % 0 to 2.0
0 to 0.35
Nickel (Ni), % 9.0 to 11
0.7 to 1.3
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
Titanium (Ti), % 0
0 to 0.25
Tungsten (W), % 14 to 16
0
Zinc (Zn), % 0
0 to 0.35
Residuals, % 0
0 to 0.15