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A357.0 Aluminum vs. EN 2.4964 Cobalt

A357.0 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 (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 A357.0 aluminum and the bottom bar is EN 2.4964 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
220
Elongation at Break, % 3.7
40
Fatigue Strength, MPa 100
220
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
86
Tensile Strength: Ultimate (UTS), MPa 350
960
Tensile Strength: Yield (Proof), MPa 270
390

Thermal Properties

Latent Heat of Fusion, J/g 500
290
Melting Completion (Liquidus), °C 610
1630
Melting Onset (Solidus), °C 560
1550
Specific Heat Capacity, J/kg-K 900
400
Thermal Conductivity, W/m-K 160
15
Thermal Expansion, µm/m-K 21
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 140
1.8

Otherwise Unclassified Properties

Density, g/cm3 2.6
9.6
Embodied Carbon, kg CO2/kg material 8.2
9.8
Embodied Energy, MJ/kg 150
140
Embodied Water, L/kg 1110
450

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
310
Resilience: Unit (Modulus of Resilience), kJ/m3 520
340
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 53
21
Strength to Weight: Axial, points 38
28
Strength to Weight: Bending, points 43
23
Thermal Diffusivity, mm2/s 68
3.9
Thermal Shock Resistance, points 17
25

Alloy Composition

Aluminum (Al), % 90.8 to 93
0
Beryllium (Be), % 0.040 to 0.070
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 0.2
0
Iron (Fe), % 0 to 0.2
0 to 3.0
Magnesium (Mg), % 0.4 to 0.7
0
Manganese (Mn), % 0 to 0.1
0 to 2.0
Nickel (Ni), % 0
9.0 to 11
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 6.5 to 7.5
0 to 0.4
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0.040 to 0.2
0
Tungsten (W), % 0
14 to 16
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0