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6023 Aluminum vs. 2218 Aluminum

Both 6023 aluminum and 2218 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 6023 aluminum and the bottom bar is 2218 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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