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R30016 Cobalt vs. EN AC-47100 Aluminum

R30016 cobalt belongs to the cobalt alloys classification, while EN AC-47100 aluminum belongs to the aluminum alloys. There are 27 material properties with values for both materials. Properties with values for just one material (8, 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 R30016 cobalt and the bottom bar is EN AC-47100 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
73
Elongation at Break, % 8.4
1.1
Fatigue Strength, MPa 290
110
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 85
27
Tensile Strength: Ultimate (UTS), MPa 1010
270
Tensile Strength: Yield (Proof), MPa 580
160

Thermal Properties

Latent Heat of Fusion, J/g 320
570
Melting Completion (Liquidus), °C 1360
590
Melting Onset (Solidus), °C 1270
560
Specific Heat Capacity, J/kg-K 450
890
Thermal Conductivity, W/m-K 15
130
Thermal Expansion, µm/m-K 14
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
30
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
100

Otherwise Unclassified Properties

Density, g/cm3 8.5
2.6
Embodied Carbon, kg CO2/kg material 7.7
7.6
Embodied Energy, MJ/kg 110
140
Embodied Water, L/kg 500
1030

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 72
2.6
Resilience: Unit (Modulus of Resilience), kJ/m3 770
170
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
53
Strength to Weight: Axial, points 33
28
Strength to Weight: Bending, points 26
35
Thermal Diffusivity, mm2/s 3.9
54
Thermal Shock Resistance, points 24
12

Alloy Composition

Aluminum (Al), % 0
81.4 to 88.8
Carbon (C), % 0.9 to 1.4
0
Chromium (Cr), % 28 to 32
0 to 0.1
Cobalt (Co), % 49.6 to 66.9
0
Copper (Cu), % 0
0.7 to 1.2
Iron (Fe), % 0 to 3.0
0 to 1.3
Lead (Pb), % 0
0 to 0.2
Magnesium (Mg), % 0
0 to 0.35
Manganese (Mn), % 0.5 to 2.0
0 to 0.55
Molybdenum (Mo), % 0 to 1.5
0
Nickel (Ni), % 0 to 3.0
0 to 0.3
Silicon (Si), % 0.2 to 2.0
10.5 to 13.5
Tin (Sn), % 0
0 to 0.1
Titanium (Ti), % 0
0 to 0.2
Tungsten (W), % 3.5 to 5.5
0
Zinc (Zn), % 0
0 to 0.55
Residuals, % 0
0 to 0.25