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EN 2.4964 Cobalt vs. 308.0 Aluminum

EN 2.4964 cobalt belongs to the cobalt alloys classification, while 308.0 aluminum belongs to the aluminum alloys. There are 27 material properties with values for both materials. Properties with values for just one material (5, 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 308.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
73
Elongation at Break, % 40
2.0
Fatigue Strength, MPa 220
89
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 86
27
Tensile Strength: Ultimate (UTS), MPa 960
190
Tensile Strength: Yield (Proof), MPa 390
110

Thermal Properties

Latent Heat of Fusion, J/g 290
470
Melting Completion (Liquidus), °C 1630
620
Melting Onset (Solidus), °C 1550
540
Specific Heat Capacity, J/kg-K 400
870
Thermal Conductivity, W/m-K 15
140
Thermal Expansion, µm/m-K 12
20

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
7.7
Embodied Energy, MJ/kg 140
140
Embodied Water, L/kg 450
1080

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
3.3
Resilience: Unit (Modulus of Resilience), kJ/m3 340
83
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 21
47
Strength to Weight: Axial, points 28
18
Strength to Weight: Bending, points 23
25
Thermal Diffusivity, mm2/s 3.9
55
Thermal Shock Resistance, points 25
9.2

Alloy Composition

Aluminum (Al), % 0
85.7 to 91
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 1.0
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0 to 2.0
0 to 0.5
Nickel (Ni), % 9.0 to 11
0
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.4
5.0 to 6.0
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
0 to 0.25
Tungsten (W), % 14 to 16
0
Zinc (Zn), % 0
0 to 1.0
Residuals, % 0
0 to 0.5