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2219 Aluminum vs. R31537 Cobalt

2219 aluminum belongs to the aluminum alloys classification, while R31537 cobalt belongs to the cobalt 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 2219 aluminum and the bottom bar is R31537 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
220
Elongation at Break, % 2.2 to 20
14 to 23
Fatigue Strength, MPa 90 to 130
310 to 480
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
87
Tensile Strength: Ultimate (UTS), MPa 180 to 480
1000 to 1340
Tensile Strength: Yield (Proof), MPa 88 to 390
590 to 940

Thermal Properties

Latent Heat of Fusion, J/g 390
320
Melting Completion (Liquidus), °C 640
1360
Melting Onset (Solidus), °C 540
1290
Specific Heat Capacity, J/kg-K 870
450
Thermal Conductivity, W/m-K 110 to 170
13
Thermal Expansion, µm/m-K 22
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 28 to 44
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 81 to 130
2.1

Otherwise Unclassified Properties

Density, g/cm3 3.1
8.4
Embodied Carbon, kg CO2/kg material 8.2
8.1
Embodied Energy, MJ/kg 150
110
Embodied Water, L/kg 1130
530

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 9.6 to 60
140 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 54 to 1060
780 to 1990
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 44
24
Strength to Weight: Axial, points 16 to 43
33 to 44
Strength to Weight: Bending, points 23 to 44
26 to 32
Thermal Diffusivity, mm2/s 42 to 63
3.4
Thermal Shock Resistance, points 8.2 to 22
24 to 32

Alloy Composition

Aluminum (Al), % 91.5 to 93.8
0
Carbon (C), % 0
0 to 0.14
Chromium (Cr), % 0
26 to 30
Cobalt (Co), % 0
58.9 to 69
Copper (Cu), % 5.8 to 6.8
0
Iron (Fe), % 0 to 0.3
0 to 0.75
Magnesium (Mg), % 0 to 0.020
0
Manganese (Mn), % 0.2 to 0.4
0 to 1.0
Molybdenum (Mo), % 0
5.0 to 7.0
Nickel (Ni), % 0
0 to 1.0
Nitrogen (N), % 0
0 to 0.25
Silicon (Si), % 0 to 0.2
0 to 1.0
Titanium (Ti), % 0.020 to 0.1
0
Vanadium (V), % 0.050 to 0.15
0
Zinc (Zn), % 0 to 0.1
0
Zirconium (Zr), % 0.1 to 0.25
0
Residuals, % 0 to 0.15
0

Comparable Variants