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6262 Aluminum vs. R30075 Cobalt

6262 aluminum belongs to the aluminum alloys classification, while R30075 cobalt belongs to the cobalt alloys. There are 27 material properties with values for both materials. Properties with values for just one material (4, 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 6262 aluminum and the bottom bar is R30075 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
210 to 250
Elongation at Break, % 4.6 to 10
12
Fatigue Strength, MPa 90 to 110
250 to 840
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
82 to 98
Tensile Strength: Ultimate (UTS), MPa 290 to 390
780 to 1280
Tensile Strength: Yield (Proof), MPa 270 to 360
480 to 840

Thermal Properties

Latent Heat of Fusion, J/g 400
320
Melting Completion (Liquidus), °C 650
1360
Melting Onset (Solidus), °C 580
1290
Specific Heat Capacity, J/kg-K 890
450
Thermal Conductivity, W/m-K 170
13
Thermal Expansion, µm/m-K 23
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 44
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 140
2.1

Otherwise Unclassified Properties

Density, g/cm3 2.8
8.4
Embodied Carbon, kg CO2/kg material 8.3
8.1
Embodied Energy, MJ/kg 150
110
Embodied Water, L/kg 1190
530

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17 to 31
84 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 530 to 940
560 to 1410
Stiffness to Weight: Axial, points 13
14 to 17
Stiffness to Weight: Bending, points 48
24 to 25
Strength to Weight: Axial, points 29 to 39
26 to 42
Strength to Weight: Bending, points 35 to 42
22 to 31
Thermal Diffusivity, mm2/s 69
3.5
Thermal Shock Resistance, points 13 to 18
21 to 29

Alloy Composition

Aluminum (Al), % 94.7 to 97.8
0 to 0.1
Bismuth (Bi), % 0.4 to 0.7
0
Boron (B), % 0
0 to 0.010
Carbon (C), % 0
0 to 0.35
Chromium (Cr), % 0.040 to 0.14
27 to 30
Cobalt (Co), % 0
58.7 to 68
Copper (Cu), % 0.15 to 0.4
0
Iron (Fe), % 0 to 0.7
0 to 0.75
Lead (Pb), % 0.4 to 0.7
0
Magnesium (Mg), % 0.8 to 1.2
0
Manganese (Mn), % 0 to 0.15
0 to 1.0
Molybdenum (Mo), % 0
5.0 to 7.0
Nickel (Ni), % 0
0 to 0.5
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0.4 to 0.8
0 to 1.0
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.15
0 to 0.1
Tungsten (W), % 0
0 to 0.2
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0