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R31537 Cobalt vs. 333.0 Aluminum

R31537 cobalt belongs to the cobalt alloys classification, while 333.0 aluminum belongs to the aluminum alloys. There are 27 material properties with values for both materials. Properties with values for just one material (6, 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 333.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
73
Elongation at Break, % 14 to 23
1.0 to 2.0
Fatigue Strength, MPa 310 to 480
83 to 100
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 87
28
Tensile Strength: Ultimate (UTS), MPa 1000 to 1340
230 to 280
Tensile Strength: Yield (Proof), MPa 590 to 940
130 to 210

Thermal Properties

Latent Heat of Fusion, J/g 320
520
Melting Completion (Liquidus), °C 1360
590
Melting Onset (Solidus), °C 1290
530
Specific Heat Capacity, J/kg-K 450
880
Thermal Conductivity, W/m-K 13
100 to 140
Thermal Expansion, µm/m-K 13
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
26 to 35
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
83 to 110

Otherwise Unclassified Properties

Density, g/cm3 8.4
2.8
Embodied Carbon, kg CO2/kg material 8.1
7.6
Embodied Energy, MJ/kg 110
140
Embodied Water, L/kg 530
1040

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 200
2.1 to 4.6
Resilience: Unit (Modulus of Resilience), kJ/m3 780 to 1990
120 to 290
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 24
49
Strength to Weight: Axial, points 33 to 44
22 to 27
Strength to Weight: Bending, points 26 to 32
29 to 34
Thermal Diffusivity, mm2/s 3.4
42 to 57
Thermal Shock Resistance, points 24 to 32
11 to 13

Alloy Composition

Aluminum (Al), % 0
81.8 to 89
Carbon (C), % 0 to 0.14
0
Chromium (Cr), % 26 to 30
0
Cobalt (Co), % 58.9 to 69
0
Copper (Cu), % 0
3.0 to 4.0
Iron (Fe), % 0 to 0.75
0 to 1.0
Magnesium (Mg), % 0
0.050 to 0.5
Manganese (Mn), % 0 to 1.0
0 to 0.5
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
0 to 0.5
Nitrogen (N), % 0 to 0.25
0
Silicon (Si), % 0 to 1.0
8.0 to 10
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 1.0
Residuals, % 0
0 to 0.5