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R30012 Cobalt vs. Sintered 2014 Aluminum

R30012 cobalt belongs to the cobalt alloys classification, while sintered 2014 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 R30012 cobalt and the bottom bar is sintered 2014 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
70
Elongation at Break, % 1.0
0.5 to 3.0
Fatigue Strength, MPa 320
52 to 100
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 86
26
Tensile Strength: Ultimate (UTS), MPa 830
140 to 290
Tensile Strength: Yield (Proof), MPa 650
97 to 280

Thermal Properties

Latent Heat of Fusion, J/g 320
390
Melting Completion (Liquidus), °C 1470
650
Melting Onset (Solidus), °C 1280
560
Specific Heat Capacity, J/kg-K 440
880
Thermal Conductivity, W/m-K 15
130
Thermal Expansion, µm/m-K 12
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
33
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
100

Otherwise Unclassified Properties

Density, g/cm3 8.8
2.9
Embodied Carbon, kg CO2/kg material 8.3
8.0
Embodied Energy, MJ/kg 120
150
Embodied Water, L/kg 480
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.7
1.0 to 5.7
Resilience: Unit (Modulus of Resilience), kJ/m3 960
68 to 560
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
47
Strength to Weight: Axial, points 26
13 to 27
Strength to Weight: Bending, points 22
20 to 33
Thermal Diffusivity, mm2/s 3.8
51
Thermal Shock Resistance, points 23
6.2 to 13

Alloy Composition

Aluminum (Al), % 0
91.5 to 96.3
Carbon (C), % 1.4 to 2.0
0
Chromium (Cr), % 27 to 32
0
Cobalt (Co), % 47.5 to 64.1
0
Copper (Cu), % 0
3.5 to 5.0
Iron (Fe), % 0 to 3.0
0
Magnesium (Mg), % 0
0.2 to 0.8
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0
Silicon (Si), % 0 to 2.0
0 to 1.2
Tungsten (W), % 7.5 to 9.5
0
Residuals, % 0
0 to 1.5