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R31537 Cobalt vs. 6262 Aluminum

R31537 cobalt belongs to the cobalt alloys classification, while 6262 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 R31537 cobalt and the bottom bar is 6262 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
68
Elongation at Break, % 14 to 23
4.6 to 10
Fatigue Strength, MPa 310 to 480
90 to 110
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 87
26
Tensile Strength: Ultimate (UTS), MPa 1000 to 1340
290 to 390
Tensile Strength: Yield (Proof), MPa 590 to 940
270 to 360

Thermal Properties

Latent Heat of Fusion, J/g 320
400
Melting Completion (Liquidus), °C 1360
650
Melting Onset (Solidus), °C 1290
580
Specific Heat Capacity, J/kg-K 450
890
Thermal Conductivity, W/m-K 13
170
Thermal Expansion, µm/m-K 13
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
44
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
140

Otherwise Unclassified Properties

Density, g/cm3 8.4
2.8
Embodied Carbon, kg CO2/kg material 8.1
8.3
Embodied Energy, MJ/kg 110
150
Embodied Water, L/kg 530
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 200
17 to 31
Resilience: Unit (Modulus of Resilience), kJ/m3 780 to 1990
530 to 940
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 24
48
Strength to Weight: Axial, points 33 to 44
29 to 39
Strength to Weight: Bending, points 26 to 32
35 to 42
Thermal Diffusivity, mm2/s 3.4
69
Thermal Shock Resistance, points 24 to 32
13 to 18

Alloy Composition

Aluminum (Al), % 0
94.7 to 97.8
Bismuth (Bi), % 0
0.4 to 0.7
Carbon (C), % 0 to 0.14
0
Chromium (Cr), % 26 to 30
0.040 to 0.14
Cobalt (Co), % 58.9 to 69
0
Copper (Cu), % 0
0.15 to 0.4
Iron (Fe), % 0 to 0.75
0 to 0.7
Lead (Pb), % 0
0.4 to 0.7
Magnesium (Mg), % 0
0.8 to 1.2
Manganese (Mn), % 0 to 1.0
0 to 0.15
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
0.4 to 0.8
Titanium (Ti), % 0
0 to 0.15
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15