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B390.0 Aluminum vs. EN 2.4964 Cobalt

B390.0 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 (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 B390.0 aluminum and the bottom bar is EN 2.4964 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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