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5082 Aluminum vs. 6351 Aluminum

Both 5082 aluminum and 6351 aluminum are aluminum alloys. They have a very high 96% of their average alloy composition in common.

For each property being compared, the top bar is 5082 aluminum and the bottom bar is 6351 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67
69
Elongation at Break, % 1.1
7.8 to 18
Fatigue Strength, MPa 110 to 130
79 to 130
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 25
26
Shear Strength, MPa 210 to 230
84 to 200
Tensile Strength: Ultimate (UTS), MPa 380 to 400
140 to 310
Tensile Strength: Yield (Proof), MPa 300 to 340
95 to 270

Thermal Properties

Latent Heat of Fusion, J/g 400
410
Maximum Temperature: Mechanical, °C 180
160
Melting Completion (Liquidus), °C 640
650
Melting Onset (Solidus), °C 560
570
Specific Heat Capacity, J/kg-K 910
900
Thermal Conductivity, W/m-K 130
180
Thermal Expansion, µm/m-K 24
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
46
Electrical Conductivity: Equal Weight (Specific), % IACS 110
150

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.7
2.7
Embodied Carbon, kg CO2/kg material 8.9
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.0 to 4.3
20 to 38
Resilience: Unit (Modulus of Resilience), kJ/m3 670 to 870
65 to 540
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 51
50
Strength to Weight: Axial, points 39 to 41
14 to 32
Strength to Weight: Bending, points 43 to 45
22 to 38
Thermal Diffusivity, mm2/s 54
72
Thermal Shock Resistance, points 17 to 18
6.1 to 14

Alloy Composition

Aluminum (Al), % 93.5 to 96
96 to 98.5
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 0 to 0.15
0 to 0.1
Iron (Fe), % 0 to 0.35
0 to 0.5
Magnesium (Mg), % 4.0 to 5.0
0.4 to 0.8
Manganese (Mn), % 0 to 0.15
0.4 to 0.8
Silicon (Si), % 0 to 0.2
0.7 to 1.3
Titanium (Ti), % 0 to 0.1
0 to 0.2
Zinc (Zn), % 0 to 0.25
0 to 0.2
Residuals, % 0
0 to 0.15