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5082 Aluminum vs. 3102 Aluminum

Both 5082 aluminum and 3102 aluminum are aluminum alloys. They have a very high 95% of their average alloy composition in common.

For each property being compared, the top bar is 5082 aluminum and the bottom bar is 3102 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67
69
Elongation at Break, % 1.1
23 to 28
Fatigue Strength, MPa 110 to 130
31 to 34
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 25
26
Shear Strength, MPa 210 to 230
58 to 65
Tensile Strength: Ultimate (UTS), MPa 380 to 400
92 to 100
Tensile Strength: Yield (Proof), MPa 300 to 340
28 to 34

Thermal Properties

Latent Heat of Fusion, J/g 400
400
Maximum Temperature: Mechanical, °C 180
180
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 560
640
Specific Heat Capacity, J/kg-K 910
900
Thermal Conductivity, W/m-K 130
230
Thermal Expansion, µm/m-K 24
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
56
Electrical Conductivity: Equal Weight (Specific), % IACS 110
190

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.0
Density, g/cm3 2.7
2.7
Embodied Carbon, kg CO2/kg material 8.9
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.0 to 4.3
16 to 22
Resilience: Unit (Modulus of Resilience), kJ/m3 670 to 870
5.8 to 8.3
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 51
50
Strength to Weight: Axial, points 39 to 41
9.4 to 10
Strength to Weight: Bending, points 43 to 45
17 to 18
Thermal Diffusivity, mm2/s 54
92
Thermal Shock Resistance, points 17 to 18
4.1 to 4.4

Alloy Composition

Aluminum (Al), % 93.5 to 96
97.9 to 99.95
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 0.7
Magnesium (Mg), % 4.0 to 5.0
0
Manganese (Mn), % 0 to 0.15
0.050 to 0.4
Silicon (Si), % 0 to 0.2
0 to 0.4
Titanium (Ti), % 0 to 0.1
0 to 0.1
Zinc (Zn), % 0 to 0.25
0 to 0.3
Residuals, % 0
0 to 0.15