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2011 Aluminum vs. 2218 Aluminum

Both 2011 aluminum and 2218 aluminum are aluminum alloys. They have a very high 96% 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 2011 aluminum and the bottom bar is 2218 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
73
Elongation at Break, % 8.5 to 18
6.8 to 10
Fatigue Strength, MPa 74 to 120
110
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
27
Shear Strength, MPa 190 to 250
210 to 250
Tensile Strength: Ultimate (UTS), MPa 310 to 420
330 to 430
Tensile Strength: Yield (Proof), MPa 140 to 310
260 to 310

Thermal Properties

Latent Heat of Fusion, J/g 390
390
Maximum Temperature: Mechanical, °C 190
220
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 540
510
Specific Heat Capacity, J/kg-K 870
870
Thermal Conductivity, W/m-K 140 to 170
140
Thermal Expansion, µm/m-K 23
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35 to 45
37
Electrical Conductivity: Equal Weight (Specific), % IACS 100 to 130
110

Otherwise Unclassified Properties

Base Metal Price, % relative 11
11
Density, g/cm3 3.1
3.1
Embodied Carbon, kg CO2/kg material 7.9
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1150
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 29 to 52
27 to 31
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 680
450 to 650
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 44
45
Strength to Weight: Axial, points 27 to 37
30 to 39
Strength to Weight: Bending, points 32 to 40
34 to 41
Thermal Diffusivity, mm2/s 51 to 64
52
Thermal Shock Resistance, points 14 to 19
15 to 19

Alloy Composition

Aluminum (Al), % 91.3 to 94.6
88.8 to 93.6
Bismuth (Bi), % 0.2 to 0.6
0
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 5.0 to 6.0
3.5 to 4.5
Iron (Fe), % 0 to 0.7
0 to 1.0
Lead (Pb), % 0.2 to 0.6
0
Magnesium (Mg), % 0
1.2 to 1.8
Manganese (Mn), % 0
0 to 0.2
Nickel (Ni), % 0
1.7 to 2.3
Silicon (Si), % 0 to 0.4
0 to 0.9
Zinc (Zn), % 0 to 0.3
0 to 0.25
Residuals, % 0
0 to 0.15