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EN 2.4964 Cobalt vs. 6101A Aluminum

EN 2.4964 cobalt belongs to the cobalt alloys classification, while 6101A 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 6101A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
68
Elongation at Break, % 40
11
Fatigue Strength, MPa 220
80
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 86
26
Tensile Strength: Ultimate (UTS), MPa 960
220
Tensile Strength: Yield (Proof), MPa 390
190

Thermal Properties

Latent Heat of Fusion, J/g 290
400
Melting Completion (Liquidus), °C 1630
640
Melting Onset (Solidus), °C 1550
630
Specific Heat Capacity, J/kg-K 400
900
Thermal Conductivity, W/m-K 15
200
Thermal Expansion, µm/m-K 12
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
55
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
180

Otherwise Unclassified Properties

Density, g/cm3 9.6
2.7
Embodied Carbon, kg CO2/kg material 9.8
8.3
Embodied Energy, MJ/kg 140
150
Embodied Water, L/kg 450
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
24
Resilience: Unit (Modulus of Resilience), kJ/m3 340
280
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 21
51
Strength to Weight: Axial, points 28
23
Strength to Weight: Bending, points 23
30
Thermal Diffusivity, mm2/s 3.9
84
Thermal Shock Resistance, points 25
10

Alloy Composition

Aluminum (Al), % 0
97.9 to 99.3
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 to 0.050
Iron (Fe), % 0 to 3.0
0 to 0.4
Magnesium (Mg), % 0
0.4 to 0.9
Manganese (Mn), % 0 to 2.0
0
Nickel (Ni), % 9.0 to 11
0
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.4
0.3 to 0.7
Sulfur (S), % 0 to 0.015
0
Tungsten (W), % 14 to 16
0
Residuals, % 0
0 to 0.1