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5449 Aluminum vs. 5082 Aluminum

Both 5449 aluminum and 5082 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 5082 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
67
Elongation at Break, % 4.0 to 17
1.1
Fatigue Strength, MPa 78 to 120
110 to 130
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
25
Shear Strength, MPa 130 to 190
210 to 230
Tensile Strength: Ultimate (UTS), MPa 210 to 330
380 to 400
Tensile Strength: Yield (Proof), MPa 91 to 260
300 to 340

Thermal Properties

Latent Heat of Fusion, J/g 400
400
Maximum Temperature: Mechanical, °C 190
180
Melting Completion (Liquidus), °C 650
640
Melting Onset (Solidus), °C 590
560
Specific Heat Capacity, J/kg-K 900
910
Thermal Conductivity, W/m-K 140
130
Thermal Expansion, µm/m-K 23
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
32
Electrical Conductivity: Equal Weight (Specific), % IACS 110
110

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.8
2.7
Embodied Carbon, kg CO2/kg material 8.5
8.9
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12 to 29
4.0 to 4.3
Resilience: Unit (Modulus of Resilience), kJ/m3 60 to 480
670 to 870
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
51
Strength to Weight: Axial, points 22 to 33
39 to 41
Strength to Weight: Bending, points 29 to 39
43 to 45
Thermal Diffusivity, mm2/s 56
54
Thermal Shock Resistance, points 9.4 to 15
17 to 18

Alloy Composition

Aluminum (Al), % 94.1 to 97.8
93.5 to 96
Chromium (Cr), % 0 to 0.3
0 to 0.15
Copper (Cu), % 0 to 0.3
0 to 0.15
Iron (Fe), % 0 to 0.7
0 to 0.35
Magnesium (Mg), % 1.6 to 2.6
4.0 to 5.0
Manganese (Mn), % 0.6 to 1.1
0 to 0.15
Silicon (Si), % 0 to 0.4
0 to 0.2
Titanium (Ti), % 0 to 0.1
0 to 0.1
Zinc (Zn), % 0 to 0.3
0 to 0.25
Residuals, % 0
0 to 0.15