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2018 Aluminum vs. 6066 Aluminum

Both 2018 aluminum and 6066 aluminum are aluminum alloys. They have a moderately high 95% of their average alloy composition in common. There are 30 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 2018 aluminum and the bottom bar is 6066 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
70
Elongation at Break, % 9.6
7.8 to 17
Fatigue Strength, MPa 120
94 to 130
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
26
Shear Strength, MPa 270
95 to 240
Tensile Strength: Ultimate (UTS), MPa 420
160 to 400
Tensile Strength: Yield (Proof), MPa 310
93 to 360

Thermal Properties

Latent Heat of Fusion, J/g 390
410
Maximum Temperature: Mechanical, °C 220
170
Melting Completion (Liquidus), °C 640
650
Melting Onset (Solidus), °C 510
560
Specific Heat Capacity, J/kg-K 870
890
Thermal Conductivity, W/m-K 150
150
Thermal Expansion, µm/m-K 22
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
40
Electrical Conductivity: Equal Weight (Specific), % IACS 120
130

Otherwise Unclassified Properties

Base Metal Price, % relative 11
9.5
Density, g/cm3 3.1
2.8
Embodied Carbon, kg CO2/kg material 8.1
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1130
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37
23 to 52
Resilience: Unit (Modulus of Resilience), kJ/m3 670
61 to 920
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 45
49
Strength to Weight: Axial, points 38
16 to 39
Strength to Weight: Bending, points 41
23 to 43
Thermal Diffusivity, mm2/s 57
61
Thermal Shock Resistance, points 19
6.9 to 17

Alloy Composition

Aluminum (Al), % 89.7 to 94.4
93 to 97
Chromium (Cr), % 0 to 0.1
0 to 0.4
Copper (Cu), % 3.5 to 4.5
0.7 to 1.2
Iron (Fe), % 0 to 1.0
0 to 0.5
Magnesium (Mg), % 0.45 to 0.9
0.8 to 1.4
Manganese (Mn), % 0 to 0.2
0.6 to 1.1
Nickel (Ni), % 1.7 to 2.3
0
Silicon (Si), % 0 to 0.9
0.9 to 1.8
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0 to 0.25
0 to 0.25
Residuals, % 0 to 0.15
0 to 0.15