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8021 Aluminum vs. 6066 Aluminum

Both 8021 aluminum and 6066 aluminum are aluminum alloys. They have a very high 95% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is 8021 aluminum and the bottom bar is 6066 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
70
Elongation at Break, % 2.3
7.8 to 17
Fatigue Strength, MPa 61
94 to 130
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Tensile Strength: Ultimate (UTS), MPa 160
160 to 400
Tensile Strength: Yield (Proof), MPa 130
93 to 360

Thermal Properties

Latent Heat of Fusion, J/g 400
410
Maximum Temperature: Mechanical, °C 170
170
Melting Completion (Liquidus), °C 650
650
Melting Onset (Solidus), °C 640
560
Specific Heat Capacity, J/kg-K 900
890
Thermal Conductivity, W/m-K 220
150
Thermal Expansion, µm/m-K 23
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 56
40
Electrical Conductivity: Equal Weight (Specific), % IACS 180
130

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
9.5
Density, g/cm3 2.8
2.8
Embodied Carbon, kg CO2/kg material 8.1
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.4
23 to 52
Resilience: Unit (Modulus of Resilience), kJ/m3 130
61 to 920
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 49
49
Strength to Weight: Axial, points 16
16 to 39
Strength to Weight: Bending, points 23
23 to 43
Thermal Diffusivity, mm2/s 88
61
Thermal Shock Resistance, points 7.0
6.9 to 17

Alloy Composition

Aluminum (Al), % 98 to 98.8
93 to 97
Chromium (Cr), % 0
0 to 0.4
Copper (Cu), % 0 to 0.050
0.7 to 1.2
Iron (Fe), % 1.2 to 1.7
0 to 0.5
Magnesium (Mg), % 0
0.8 to 1.4
Manganese (Mn), % 0
0.6 to 1.1
Silicon (Si), % 0 to 0.15
0.9 to 1.8
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15