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EN 2.4964 Cobalt vs. 850.0 Aluminum

EN 2.4964 cobalt belongs to the cobalt alloys classification, while 850.0 aluminum belongs to the aluminum alloys. There are 27 material properties with values for both materials. Properties with values for just one material (5, 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 850.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
69
Elongation at Break, % 40
7.9
Fatigue Strength, MPa 220
59
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 86
26
Tensile Strength: Ultimate (UTS), MPa 960
140
Tensile Strength: Yield (Proof), MPa 390
76

Thermal Properties

Latent Heat of Fusion, J/g 290
380
Melting Completion (Liquidus), °C 1630
650
Melting Onset (Solidus), °C 1550
370
Specific Heat Capacity, J/kg-K 400
850
Thermal Conductivity, W/m-K 15
180
Thermal Expansion, µm/m-K 12
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
47
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
140

Otherwise Unclassified Properties

Density, g/cm3 9.6
3.1
Embodied Carbon, kg CO2/kg material 9.8
8.5
Embodied Energy, MJ/kg 140
160
Embodied Water, L/kg 450
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
9.1
Resilience: Unit (Modulus of Resilience), kJ/m3 340
42
Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 21
44
Strength to Weight: Axial, points 28
12
Strength to Weight: Bending, points 23
19
Thermal Diffusivity, mm2/s 3.9
69
Thermal Shock Resistance, points 25
6.1

Alloy Composition


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Aluminum (Al), % 0
88.3 to 93.1
Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 19 to 21
0
Cobalt (Co), % 46.4 to 58
0
Copper (Cu), % 0
0.7 to 1.3
Iron (Fe), % 0 to 3.0
0 to 0.7
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0 to 2.0
0 to 0.1
Nickel (Ni), % 9.0 to 11
0.7 to 1.3
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.4
0 to 0.7
Sulfur (S), % 0 to 0.015
0
Tin (Sn), % 0
5.5 to 7.0
Titanium (Ti), % 0
0 to 0.2
Tungsten (W), % 14 to 16
0
Residuals, % 0
0 to 0.3