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2018 Aluminum vs. 5449 Aluminum

Both 2018 aluminum and 5449 aluminum are aluminum alloys. They have a moderately high 94% 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 5449 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
69
Elongation at Break, % 9.6
4.0 to 17
Fatigue Strength, MPa 120
78 to 120
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
26
Shear Strength, MPa 270
130 to 190
Tensile Strength: Ultimate (UTS), MPa 420
210 to 330
Tensile Strength: Yield (Proof), MPa 310
91 to 260

Thermal Properties

Latent Heat of Fusion, J/g 390
400
Maximum Temperature: Mechanical, °C 220
190
Melting Completion (Liquidus), °C 640
650
Melting Onset (Solidus), °C 510
590
Specific Heat Capacity, J/kg-K 870
900
Thermal Conductivity, W/m-K 150
140
Thermal Expansion, µm/m-K 22
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
35
Electrical Conductivity: Equal Weight (Specific), % IACS 120
110

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
8.5
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1130
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37
12 to 29
Resilience: Unit (Modulus of Resilience), kJ/m3 670
60 to 480
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 45
50
Strength to Weight: Axial, points 38
22 to 33
Strength to Weight: Bending, points 41
29 to 39
Thermal Diffusivity, mm2/s 57
56
Thermal Shock Resistance, points 19
9.4 to 15

Alloy Composition

Aluminum (Al), % 89.7 to 94.4
94.1 to 97.8
Chromium (Cr), % 0 to 0.1
0 to 0.3
Copper (Cu), % 3.5 to 4.5
0 to 0.3
Iron (Fe), % 0 to 1.0
0 to 0.7
Magnesium (Mg), % 0.45 to 0.9
1.6 to 2.6
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 to 0.4
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0 to 0.25
0 to 0.3
Residuals, % 0
0 to 0.15