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7050 Aluminum vs. EN 2.4964 Cobalt

7050 aluminum belongs to the aluminum alloys classification, while EN 2.4964 cobalt belongs to the cobalt 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 7050 aluminum and the bottom bar is EN 2.4964 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
220
Elongation at Break, % 2.2 to 12
40
Fatigue Strength, MPa 130 to 210
220
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 26
86
Tensile Strength: Ultimate (UTS), MPa 490 to 570
960
Tensile Strength: Yield (Proof), MPa 390 to 500
390

Thermal Properties

Latent Heat of Fusion, J/g 370
290
Melting Completion (Liquidus), °C 630
1630
Melting Onset (Solidus), °C 490
1550
Specific Heat Capacity, J/kg-K 860
400
Thermal Conductivity, W/m-K 140
15
Thermal Expansion, µm/m-K 24
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 100
1.8

Otherwise Unclassified Properties

Density, g/cm3 3.1
9.6
Embodied Carbon, kg CO2/kg material 8.2
9.8
Embodied Energy, MJ/kg 150
140
Embodied Water, L/kg 1120
450

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 10 to 55
310
Resilience: Unit (Modulus of Resilience), kJ/m3 1110 to 1760
340
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 45
21
Strength to Weight: Axial, points 45 to 51
28
Strength to Weight: Bending, points 45 to 50
23
Thermal Diffusivity, mm2/s 54
3.9
Thermal Shock Resistance, points 21 to 25
25

Alloy Composition

Aluminum (Al), % 87.3 to 92.1
0
Carbon (C), % 0
0.050 to 0.15
Chromium (Cr), % 0 to 0.040
19 to 21
Cobalt (Co), % 0
46.4 to 58
Copper (Cu), % 2.0 to 2.6
0
Iron (Fe), % 0 to 0.15
0 to 3.0
Magnesium (Mg), % 1.9 to 2.6
0
Manganese (Mn), % 0 to 0.1
0 to 2.0
Nickel (Ni), % 0
9.0 to 11
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.12
0 to 0.4
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.060
0
Tungsten (W), % 0
14 to 16
Zinc (Zn), % 5.7 to 6.7
0
Zirconium (Zr), % 0.080 to 0.15
0
Residuals, % 0 to 0.15
0