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R31537 Cobalt vs. 224.0 Aluminum

R31537 cobalt belongs to the cobalt alloys classification, while 224.0 aluminum belongs to the aluminum 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 R31537 cobalt and the bottom bar is 224.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
71
Elongation at Break, % 14 to 23
4.0 to 10
Fatigue Strength, MPa 310 to 480
86 to 120
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 87
27
Tensile Strength: Ultimate (UTS), MPa 1000 to 1340
380 to 420
Tensile Strength: Yield (Proof), MPa 590 to 940
280 to 330

Thermal Properties

Latent Heat of Fusion, J/g 320
390
Melting Completion (Liquidus), °C 1360
650
Melting Onset (Solidus), °C 1290
550
Specific Heat Capacity, J/kg-K 450
870
Thermal Conductivity, W/m-K 13
120
Thermal Expansion, µm/m-K 13
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
32
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
95

Otherwise Unclassified Properties

Density, g/cm3 8.4
3.0
Embodied Carbon, kg CO2/kg material 8.1
8.3
Embodied Energy, MJ/kg 110
160
Embodied Water, L/kg 530
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 200
16 to 35
Resilience: Unit (Modulus of Resilience), kJ/m3 780 to 1990
540 to 770
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 24
45
Strength to Weight: Axial, points 33 to 44
35 to 38
Strength to Weight: Bending, points 26 to 32
38 to 41
Thermal Diffusivity, mm2/s 3.4
47
Thermal Shock Resistance, points 24 to 32
17 to 18

Alloy Composition

Aluminum (Al), % 0
93 to 95.2
Carbon (C), % 0 to 0.14
0
Chromium (Cr), % 26 to 30
0
Cobalt (Co), % 58.9 to 69
0
Copper (Cu), % 0
4.5 to 5.5
Iron (Fe), % 0 to 0.75
0 to 0.1
Manganese (Mn), % 0 to 1.0
0.2 to 0.5
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
0
Nitrogen (N), % 0 to 0.25
0
Silicon (Si), % 0 to 1.0
0 to 0.060
Titanium (Ti), % 0
0 to 0.35
Vanadium (V), % 0
0.050 to 0.15
Zirconium (Zr), % 0
0.1 to 0.25
Residuals, % 0
0 to 0.1