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EN 2.4964 Cobalt vs. B390.0 Aluminum

EN 2.4964 cobalt belongs to the cobalt alloys classification, while B390.0 aluminum belongs to the aluminum alloys. There are 27 material properties with values for both materials. Properties with values for just one material (2, 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 B390.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
76
Elongation at Break, % 40
0.88
Fatigue Strength, MPa 220
170
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 86
29
Tensile Strength: Ultimate (UTS), MPa 960
320
Tensile Strength: Yield (Proof), MPa 390
250

Thermal Properties

Latent Heat of Fusion, J/g 290
640
Melting Completion (Liquidus), °C 1630
580
Melting Onset (Solidus), °C 1550
580
Specific Heat Capacity, J/kg-K 400
880
Thermal Conductivity, W/m-K 15
130
Thermal Expansion, µm/m-K 12
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
27
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
88

Otherwise Unclassified Properties

Density, g/cm3 9.6
2.8
Embodied Carbon, kg CO2/kg material 9.8
7.3
Embodied Energy, MJ/kg 140
130
Embodied Water, L/kg 450
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
2.6
Resilience: Unit (Modulus of Resilience), kJ/m3 340
410
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 21
51
Strength to Weight: Axial, points 28
32
Strength to Weight: Bending, points 23
38
Thermal Diffusivity, mm2/s 3.9
55
Thermal Shock Resistance, points 25
15

Alloy Composition


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Aluminum (Al), % 0
72.7 to 79.6
Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 19 to 21
0
Cobalt (Co), % 46.4 to 58
0
Copper (Cu), % 0
4.0 to 5.0
Iron (Fe), % 0 to 3.0
0 to 1.3
Magnesium (Mg), % 0
0.45 to 0.65
Manganese (Mn), % 0 to 2.0
0 to 0.5
Nickel (Ni), % 9.0 to 11
0 to 0.1
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.4
16 to 18
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
0 to 0.1
Tungsten (W), % 14 to 16
0
Zinc (Zn), % 0
0 to 1.5
Residuals, % 0
0 to 0.2