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R30006 Cobalt vs. EN AC-42100 Aluminum

R30006 cobalt belongs to the cobalt alloys classification, while EN AC-42100 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-42100 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
70
Elongation at Break, % 1.0
3.4 to 9.0
Fatigue Strength, MPa 260
76 to 82
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 85
26
Tensile Strength: Ultimate (UTS), MPa 900
280 to 290
Tensile Strength: Yield (Proof), MPa 540
210 to 230

Thermal Properties

Latent Heat of Fusion, J/g 320
500
Melting Completion (Liquidus), °C 1400
610
Melting Onset (Solidus), °C 1290
600
Specific Heat Capacity, J/kg-K 450
910
Thermal Conductivity, W/m-K 15
150
Thermal Expansion, µm/m-K 11
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
41
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
140

Otherwise Unclassified Properties

Density, g/cm3 8.6
2.6
Embodied Carbon, kg CO2/kg material 7.8
8.0
Embodied Energy, MJ/kg 110
150
Embodied Water, L/kg 500
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
9.1 to 23
Resilience: Unit (Modulus of Resilience), kJ/m3 670
300 to 370
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 23
53
Strength to Weight: Axial, points 29
30 to 31
Strength to Weight: Bending, points 24
37 to 38
Thermal Diffusivity, mm2/s 3.9
66
Thermal Shock Resistance, points 26
13

Alloy Composition


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Aluminum (Al), % 0
91.3 to 93.3
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 0.050
Iron (Fe), % 0 to 3.0
0 to 0.19
Magnesium (Mg), % 0
0.25 to 0.45
Manganese (Mn), % 0
0 to 0.1
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0
Silicon (Si), % 0 to 2.0
6.5 to 7.5
Titanium (Ti), % 0
0 to 0.25
Tungsten (W), % 4.0 to 6.0
0
Zinc (Zn), % 0
0 to 0.070
Residuals, % 0
0 to 0.1