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5449 Aluminum vs. 6018 Aluminum

Both 5449 aluminum and 6018 aluminum are aluminum alloys. They have a very high 98% of their average alloy composition in common.

For each property being compared, the top bar is 5449 aluminum and the bottom bar is 6018 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
69
Elongation at Break, % 4.0 to 17
9.0 to 9.1
Fatigue Strength, MPa 78 to 120
85 to 89
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 130 to 190
170 to 180
Tensile Strength: Ultimate (UTS), MPa 210 to 330
290 to 300
Tensile Strength: Yield (Proof), MPa 91 to 260
220 to 230

Thermal Properties

Latent Heat of Fusion, J/g 400
400
Maximum Temperature: Mechanical, °C 190
160
Melting Completion (Liquidus), °C 650
640
Melting Onset (Solidus), °C 590
570
Specific Heat Capacity, J/kg-K 900
890
Thermal Conductivity, W/m-K 140
170
Thermal Expansion, µm/m-K 23
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
44
Electrical Conductivity: Equal Weight (Specific), % IACS 110
140

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.8
2.9
Embodied Carbon, kg CO2/kg material 8.5
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12 to 29
24 to 25
Resilience: Unit (Modulus of Resilience), kJ/m3 60 to 480
360 to 380
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
48
Strength to Weight: Axial, points 22 to 33
28 to 29
Strength to Weight: Bending, points 29 to 39
34 to 35
Thermal Diffusivity, mm2/s 56
65
Thermal Shock Resistance, points 9.4 to 15
13

Alloy Composition

Aluminum (Al), % 94.1 to 97.8
93.1 to 97.8
Bismuth (Bi), % 0
0.4 to 0.7
Chromium (Cr), % 0 to 0.3
0 to 0.1
Copper (Cu), % 0 to 0.3
0.15 to 0.4
Iron (Fe), % 0 to 0.7
0 to 0.7
Lead (Pb), % 0
0.4 to 1.2
Magnesium (Mg), % 1.6 to 2.6
0.6 to 1.2
Manganese (Mn), % 0.6 to 1.1
0.3 to 0.8
Silicon (Si), % 0 to 0.4
0.5 to 1.2
Titanium (Ti), % 0 to 0.1
0 to 0.2
Zinc (Zn), % 0 to 0.3
0 to 0.3
Residuals, % 0
0 to 0.15