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R30003 Cobalt vs. 6065 Aluminum

R30003 cobalt belongs to the cobalt alloys classification, while 6065 aluminum belongs to the aluminum alloys. There are 27 material properties with values for both materials. Properties with values for just one material (3, 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 R30003 cobalt and the bottom bar is 6065 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
68
Elongation at Break, % 10 to 73
4.5 to 11
Fatigue Strength, MPa 320 to 560
96 to 110
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 83
26
Tensile Strength: Ultimate (UTS), MPa 970 to 1720
310 to 400
Tensile Strength: Yield (Proof), MPa 510 to 1090
270 to 380

Thermal Properties

Latent Heat of Fusion, J/g 310
400
Melting Completion (Liquidus), °C 1400
640
Melting Onset (Solidus), °C 1440
590
Specific Heat Capacity, J/kg-K 450
890
Thermal Conductivity, W/m-K 13
170
Thermal Expansion, µm/m-K 13
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
43
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
140

Otherwise Unclassified Properties

Base Metal Price, % relative 95
11
Density, g/cm3 8.4
2.8
Embodied Carbon, kg CO2/kg material 8.0
8.4
Embodied Energy, MJ/kg 110
150
Embodied Water, L/kg 400
1200

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 600 to 2790
540 to 1040
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
49
Strength to Weight: Axial, points 32 to 57
31 to 40
Strength to Weight: Bending, points 26 to 38
36 to 43
Thermal Diffusivity, mm2/s 3.3
67
Thermal Shock Resistance, points 26 to 45
14 to 18

Alloy Composition

Aluminum (Al), % 0
94.4 to 98.2
Bismuth (Bi), % 0
0.5 to 1.5
Boron (B), % 0 to 0.1
0
Carbon (C), % 0 to 0.15
0
Chromium (Cr), % 19 to 21
0 to 0.15
Cobalt (Co), % 39 to 41
0
Copper (Cu), % 0
0.15 to 0.4
Iron (Fe), % 10 to 20.5
0 to 0.7
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 0
0.8 to 1.2
Manganese (Mn), % 1.5 to 2.5
0 to 0.15
Molybdenum (Mo), % 6.0 to 8.0
0
Nickel (Ni), % 14 to 16
0
Phosphorus (P), % 0 to 0.015
0
Silicon (Si), % 0 to 1.2
0.4 to 0.8
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0
0 to 0.25
Zirconium (Zr), % 0
0 to 0.15
Residuals, % 0
0 to 0.15