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R30006 Cobalt vs. EN AC-51200 Aluminum

R30006 cobalt belongs to the cobalt alloys classification, while EN AC-51200 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 R30006 cobalt and the bottom bar is EN AC-51200 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
67
Elongation at Break, % 1.0
1.1
Fatigue Strength, MPa 260
100
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 85
25
Tensile Strength: Ultimate (UTS), MPa 900
220
Tensile Strength: Yield (Proof), MPa 540
150

Thermal Properties

Latent Heat of Fusion, J/g 320
410
Melting Completion (Liquidus), °C 1400
640
Melting Onset (Solidus), °C 1290
570
Specific Heat Capacity, J/kg-K 450
910
Thermal Conductivity, W/m-K 15
92
Thermal Expansion, µm/m-K 11
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
22
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
74

Otherwise Unclassified Properties

Density, g/cm3 8.6
2.6
Embodied Carbon, kg CO2/kg material 7.8
9.6
Embodied Energy, MJ/kg 110
150
Embodied Water, L/kg 500
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
2.2
Resilience: Unit (Modulus of Resilience), kJ/m3 670
160
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
51
Strength to Weight: Axial, points 29
24
Strength to Weight: Bending, points 24
31
Thermal Diffusivity, mm2/s 3.9
39
Thermal Shock Resistance, points 26
10

Alloy Composition


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Aluminum (Al), % 0
84.5 to 92
Carbon (C), % 0.9 to 1.4
0
Chromium (Cr), % 27 to 32
0
Cobalt (Co), % 48.6 to 68.1
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 0 to 3.0
0 to 1.0
Lead (Pb), % 0
0 to 0.1
Magnesium (Mg), % 0
8.0 to 10.5
Manganese (Mn), % 0
0 to 0.55
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0 to 0.1
Silicon (Si), % 0 to 2.0
0 to 2.5
Tin (Sn), % 0
0 to 0.1
Titanium (Ti), % 0
0 to 0.2
Tungsten (W), % 4.0 to 6.0
0
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15