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R30006 Cobalt vs. 5154A Aluminum

R30006 cobalt belongs to the cobalt alloys classification, while 5154A aluminum belongs to the aluminum alloys. There are 27 material properties with values for both materials. Properties with values for just one material (7, 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 R30006 cobalt and the bottom bar is 5154A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
68
Elongation at Break, % 1.0
1.1 to 19
Fatigue Strength, MPa 260
83 to 160
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 85
26
Tensile Strength: Ultimate (UTS), MPa 900
230 to 370
Tensile Strength: Yield (Proof), MPa 540
96 to 320

Thermal Properties

Latent Heat of Fusion, J/g 320
400
Melting Completion (Liquidus), °C 1400
650
Melting Onset (Solidus), °C 1290
600
Specific Heat Capacity, J/kg-K 450
900
Thermal Conductivity, W/m-K 15
130
Thermal Expansion, µm/m-K 11
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
32
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
110

Otherwise Unclassified Properties

Density, g/cm3 8.6
2.7
Embodied Carbon, kg CO2/kg material 7.8
8.8
Embodied Energy, MJ/kg 110
150
Embodied Water, L/kg 500
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
4.0 to 36
Resilience: Unit (Modulus of Resilience), kJ/m3 670
68 to 760
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
51
Strength to Weight: Axial, points 29
24 to 38
Strength to Weight: Bending, points 24
31 to 43
Thermal Diffusivity, mm2/s 3.9
53
Thermal Shock Resistance, points 26
10 to 16

Alloy Composition


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Aluminum (Al), % 0
93.7 to 96.9
Carbon (C), % 0.9 to 1.4
0
Chromium (Cr), % 27 to 32
0 to 0.25
Cobalt (Co), % 48.6 to 68.1
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 0 to 3.0
0 to 0.5
Magnesium (Mg), % 0
3.1 to 3.9
Manganese (Mn), % 0
0 to 0.5
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0
Silicon (Si), % 0 to 2.0
0 to 0.5
Titanium (Ti), % 0
0 to 0.2
Tungsten (W), % 4.0 to 6.0
0
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.15