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2218 Aluminum vs. 6023 Aluminum

Both 2218 aluminum and 6023 aluminum are aluminum alloys. They have a moderately high 93% 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 2218 aluminum and the bottom bar is 6023 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
69
Elongation at Break, % 6.8 to 10
11
Fatigue Strength, MPa 110
120 to 130
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
26
Shear Strength, MPa 210 to 250
210 to 220
Tensile Strength: Ultimate (UTS), MPa 330 to 430
360
Tensile Strength: Yield (Proof), MPa 260 to 310
300 to 310

Thermal Properties

Latent Heat of Fusion, J/g 390
400
Maximum Temperature: Mechanical, °C 220
160
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 510
580
Specific Heat Capacity, J/kg-K 870
890
Thermal Conductivity, W/m-K 140
170
Thermal Expansion, µm/m-K 22
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
45
Electrical Conductivity: Equal Weight (Specific), % IACS 110
140

Otherwise Unclassified Properties

Base Metal Price, % relative 11
11
Density, g/cm3 3.1
2.8
Embodied Carbon, kg CO2/kg material 8.2
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1130
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27 to 31
38 to 39
Resilience: Unit (Modulus of Resilience), kJ/m3 450 to 650
670 to 690
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 45
49
Strength to Weight: Axial, points 30 to 39
35 to 36
Strength to Weight: Bending, points 34 to 41
40
Thermal Diffusivity, mm2/s 52
67
Thermal Shock Resistance, points 15 to 19
16

Alloy Composition

Aluminum (Al), % 88.8 to 93.6
94 to 97.7
Bismuth (Bi), % 0
0.3 to 0.8
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.5 to 4.5
0.2 to 0.5
Iron (Fe), % 0 to 1.0
0 to 0.5
Magnesium (Mg), % 1.2 to 1.8
0.4 to 0.9
Manganese (Mn), % 0 to 0.2
0.2 to 0.6
Nickel (Ni), % 1.7 to 2.3
0
Silicon (Si), % 0 to 0.9
0.6 to 1.4
Tin (Sn), % 0
0.6 to 1.2
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0
0 to 0.15