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EN 2.4964 Cobalt vs. 7049 Aluminum

EN 2.4964 cobalt belongs to the cobalt alloys classification, while 7049 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 7049 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
70
Elongation at Break, % 40
6.2 to 7.0
Fatigue Strength, MPa 220
160 to 170
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 86
27
Tensile Strength: Ultimate (UTS), MPa 960
510 to 530
Tensile Strength: Yield (Proof), MPa 390
420 to 450

Thermal Properties

Latent Heat of Fusion, J/g 290
370
Melting Completion (Liquidus), °C 1630
640
Melting Onset (Solidus), °C 1550
480
Specific Heat Capacity, J/kg-K 400
860
Thermal Conductivity, W/m-K 15
130
Thermal Expansion, µm/m-K 12
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
36
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
110

Otherwise Unclassified Properties

Density, g/cm3 9.6
3.1
Embodied Carbon, kg CO2/kg material 9.8
8.1
Embodied Energy, MJ/kg 140
140
Embodied Water, L/kg 450
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
31 to 34
Resilience: Unit (Modulus of Resilience), kJ/m3 340
1270 to 1440
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 21
45
Strength to Weight: Axial, points 28
46 to 47
Strength to Weight: Bending, points 23
46 to 47
Thermal Diffusivity, mm2/s 3.9
51
Thermal Shock Resistance, points 25
22 to 23

Alloy Composition

Aluminum (Al), % 0
85.7 to 89.5
Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 19 to 21
0.1 to 0.22
Cobalt (Co), % 46.4 to 58
0
Copper (Cu), % 0
1.2 to 1.9
Iron (Fe), % 0 to 3.0
0 to 0.35
Magnesium (Mg), % 0
2.0 to 2.9
Manganese (Mn), % 0 to 2.0
0 to 0.2
Nickel (Ni), % 9.0 to 11
0
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.4
0 to 0.25
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
0 to 0.1
Tungsten (W), % 14 to 16
0
Zinc (Zn), % 0
7.2 to 8.2
Residuals, % 0
0 to 0.15