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EN 2.4964 Cobalt vs. 7475 Aluminum

EN 2.4964 cobalt belongs to the cobalt alloys classification, while 7475 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 7475 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
70
Elongation at Break, % 40
10 to 12
Fatigue Strength, MPa 220
190 to 210
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 86
26
Tensile Strength: Ultimate (UTS), MPa 960
530 to 590
Tensile Strength: Yield (Proof), MPa 390
440 to 520

Thermal Properties

Latent Heat of Fusion, J/g 290
380
Melting Completion (Liquidus), °C 1630
640
Melting Onset (Solidus), °C 1550
480
Specific Heat Capacity, J/kg-K 400
870
Thermal Conductivity, W/m-K 15
140 to 160
Thermal Expansion, µm/m-K 12
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
33 to 42
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
98 to 120

Otherwise Unclassified Properties

Density, g/cm3 9.6
3.0
Embodied Carbon, kg CO2/kg material 9.8
8.2
Embodied Energy, MJ/kg 140
150
Embodied Water, L/kg 450
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
53 to 68
Resilience: Unit (Modulus of Resilience), kJ/m3 340
1390 to 1920
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 21
46
Strength to Weight: Axial, points 28
49 to 55
Strength to Weight: Bending, points 23
48 to 52
Thermal Diffusivity, mm2/s 3.9
53 to 63
Thermal Shock Resistance, points 25
23 to 26

Alloy Composition

Aluminum (Al), % 0
88.6 to 91.6
Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 19 to 21
0.18 to 0.25
Cobalt (Co), % 46.4 to 58
0
Copper (Cu), % 0
1.2 to 1.9
Iron (Fe), % 0 to 3.0
0 to 0.12
Magnesium (Mg), % 0
1.9 to 2.6
Manganese (Mn), % 0 to 2.0
0 to 0.060
Nickel (Ni), % 9.0 to 11
0
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.4
0 to 0.1
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
0 to 0.060
Tungsten (W), % 14 to 16
0
Zinc (Zn), % 0
5.1 to 6.2
Residuals, % 0
0 to 0.15