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EN 2.4964 Cobalt vs. 707.0 Aluminum

EN 2.4964 cobalt belongs to the cobalt alloys classification, while 707.0 aluminum belongs to the aluminum 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 EN 2.4964 cobalt and the bottom bar is 707.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
70
Elongation at Break, % 40
1.7 to 3.4
Fatigue Strength, MPa 220
75 to 140
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 86
26
Tensile Strength: Ultimate (UTS), MPa 960
270 to 300
Tensile Strength: Yield (Proof), MPa 390
170 to 250

Thermal Properties

Latent Heat of Fusion, J/g 290
380
Melting Completion (Liquidus), °C 1630
630
Melting Onset (Solidus), °C 1550
600
Specific Heat Capacity, J/kg-K 400
880
Thermal Conductivity, W/m-K 15
150
Thermal Expansion, µm/m-K 12
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
37
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
110

Otherwise Unclassified Properties

Density, g/cm3 9.6
2.9
Embodied Carbon, kg CO2/kg material 9.8
8.3
Embodied Energy, MJ/kg 140
150
Embodied Water, L/kg 450
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
4.3 to 8.6
Resilience: Unit (Modulus of Resilience), kJ/m3 340
210 to 430
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 21
47
Strength to Weight: Axial, points 28
26 to 29
Strength to Weight: Bending, points 23
32 to 34
Thermal Diffusivity, mm2/s 3.9
58
Thermal Shock Resistance, points 25
12 to 13

Alloy Composition

Aluminum (Al), % 0
90.5 to 93.6
Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 19 to 21
0.2 to 0.4
Cobalt (Co), % 46.4 to 58
0
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 0 to 3.0
0 to 0.8
Magnesium (Mg), % 0
1.8 to 2.4
Manganese (Mn), % 0 to 2.0
0.4 to 0.6
Nickel (Ni), % 9.0 to 11
0
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.4
0 to 0.2
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
0 to 0.25
Tungsten (W), % 14 to 16
0
Zinc (Zn), % 0
4.0 to 4.5
Residuals, % 0
0 to 0.15