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5051A Aluminum vs. 5082 Aluminum

Both 5051A aluminum and 5082 aluminum are aluminum alloys. They have a very high 97% of their average alloy composition in common.

For each property being compared, the top bar is 5051A aluminum and the bottom bar is 5082 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
67
Elongation at Break, % 18 to 21
1.1
Fatigue Strength, MPa 51 to 61
110 to 130
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
25
Shear Strength, MPa 110
210 to 230
Tensile Strength: Ultimate (UTS), MPa 170
380 to 400
Tensile Strength: Yield (Proof), MPa 56
300 to 340

Thermal Properties

Latent Heat of Fusion, J/g 400
400
Maximum Temperature: Mechanical, °C 190
180
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 610
560
Specific Heat Capacity, J/kg-K 900
910
Thermal Conductivity, W/m-K 150
130
Thermal Expansion, µm/m-K 23
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
32
Electrical Conductivity: Equal Weight (Specific), % IACS 130
110

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.7
2.7
Embodied Carbon, kg CO2/kg material 8.5
8.9
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1190
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 27
4.0 to 4.3
Resilience: Unit (Modulus of Resilience), kJ/m3 23
670 to 870
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
51
Strength to Weight: Axial, points 17 to 18
39 to 41
Strength to Weight: Bending, points 25
43 to 45
Thermal Diffusivity, mm2/s 63
54
Thermal Shock Resistance, points 7.6
17 to 18

Alloy Composition

Aluminum (Al), % 96.1 to 98.6
93.5 to 96
Chromium (Cr), % 0 to 0.3
0 to 0.15
Copper (Cu), % 0 to 0.050
0 to 0.15
Iron (Fe), % 0 to 0.45
0 to 0.35
Magnesium (Mg), % 1.4 to 2.1
4.0 to 5.0
Manganese (Mn), % 0 to 0.25
0 to 0.15
Silicon (Si), % 0 to 0.3
0 to 0.2
Titanium (Ti), % 0 to 0.1
0 to 0.1
Zinc (Zn), % 0 to 0.2
0 to 0.25
Residuals, % 0
0 to 0.15