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6101A Aluminum vs. EN 2.4964 Cobalt

6101A aluminum belongs to the aluminum alloys classification, while EN 2.4964 cobalt belongs to the cobalt 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 6101A aluminum and the bottom bar is EN 2.4964 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

Aluminum (Al), % 97.9 to 99.3
0
Carbon (C), % 0
0.050 to 0.15
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
46.4 to 58
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.4
0 to 3.0
Magnesium (Mg), % 0.4 to 0.9
0
Manganese (Mn), % 0
0 to 2.0
Nickel (Ni), % 0
9.0 to 11
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0.3 to 0.7
0 to 0.4
Sulfur (S), % 0
0 to 0.015
Tungsten (W), % 0
14 to 16
Residuals, % 0 to 0.1
0