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EN 2.4964 Cobalt vs. 7076 Aluminum

EN 2.4964 cobalt belongs to the cobalt alloys classification, while 7076 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 7076 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
70
Elongation at Break, % 40
6.2
Fatigue Strength, MPa 220
170
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 86
27
Tensile Strength: Ultimate (UTS), MPa 960
530
Tensile Strength: Yield (Proof), MPa 390
460

Thermal Properties

Latent Heat of Fusion, J/g 290
380
Melting Completion (Liquidus), °C 1630
630
Melting Onset (Solidus), °C 1550
460
Specific Heat Capacity, J/kg-K 400
860
Thermal Conductivity, W/m-K 15
140
Thermal Expansion, µm/m-K 12
24

Electrical Properties

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

Otherwise Unclassified Properties

Density, g/cm3 9.6
3.0
Embodied Carbon, kg CO2/kg material 9.8
8.0
Embodied Energy, MJ/kg 140
150
Embodied Water, L/kg 450
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
31
Resilience: Unit (Modulus of Resilience), kJ/m3 340
1510
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 21
45
Strength to Weight: Axial, points 28
49
Strength to Weight: Bending, points 23
48
Thermal Diffusivity, mm2/s 3.9
54
Thermal Shock Resistance, points 25
23

Alloy Composition


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Aluminum (Al), % 0
86.9 to 91.2
Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 19 to 21
0
Cobalt (Co), % 46.4 to 58
0
Copper (Cu), % 0
0.3 to 1.0
Iron (Fe), % 0 to 3.0
0 to 0.6
Magnesium (Mg), % 0
1.2 to 2.0
Manganese (Mn), % 0 to 2.0
0.3 to 0.8
Nickel (Ni), % 9.0 to 11
0
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.4
0 to 0.4
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
0 to 0.2
Tungsten (W), % 14 to 16
0
Zinc (Zn), % 0
7.0 to 8.0
Residuals, % 0
0 to 0.15