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EN 2.4964 Cobalt vs. B535.0 Aluminum

EN 2.4964 cobalt belongs to the cobalt alloys classification, while B535.0 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 B535.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
66
Elongation at Break, % 40
10
Fatigue Strength, MPa 220
62
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 86
25
Tensile Strength: Ultimate (UTS), MPa 960
260
Tensile Strength: Yield (Proof), MPa 390
130

Thermal Properties

Latent Heat of Fusion, J/g 290
390
Melting Completion (Liquidus), °C 1630
630
Melting Onset (Solidus), °C 1550
550
Specific Heat Capacity, J/kg-K 400
910
Thermal Conductivity, W/m-K 15
96
Thermal Expansion, µm/m-K 12
25

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
24
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
82

Otherwise Unclassified Properties

Density, g/cm3 9.6
2.6
Embodied Carbon, kg CO2/kg material 9.8
9.4
Embodied Energy, MJ/kg 140
160
Embodied Water, L/kg 450
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
22
Resilience: Unit (Modulus of Resilience), kJ/m3 340
130
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 21
51
Strength to Weight: Axial, points 28
28
Strength to Weight: Bending, points 23
35
Thermal Diffusivity, mm2/s 3.9
40
Thermal Shock Resistance, points 25
11

Alloy Composition

Aluminum (Al), % 0
91.7 to 93.4
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 0.1
Iron (Fe), % 0 to 3.0
0 to 0.15
Magnesium (Mg), % 0
6.5 to 7.5
Manganese (Mn), % 0 to 2.0
0 to 0.050
Nickel (Ni), % 9.0 to 11
0
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.4
0 to 0.15
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
0.1 to 0.25
Tungsten (W), % 14 to 16
0
Residuals, % 0
0 to 0.15