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6082 Aluminum vs. 2218 Aluminum

Both 6082 aluminum and 2218 aluminum are aluminum alloys. They have a moderately high 93% of their average alloy composition in common.

For each property being compared, the top bar is 6082 aluminum and the bottom bar is 2218 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 40 to 95
95 to 110
Elastic (Young's, Tensile) Modulus, GPa 69
73
Elongation at Break, % 6.3 to 18
6.8 to 10
Fatigue Strength, MPa 55 to 130
110
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
27
Shear Strength, MPa 84 to 220
210 to 250
Tensile Strength: Ultimate (UTS), MPa 140 to 340
330 to 430
Tensile Strength: Yield (Proof), MPa 85 to 320
260 to 310

Thermal Properties

Latent Heat of Fusion, J/g 410
390
Maximum Temperature: Mechanical, °C 170
220
Melting Completion (Liquidus), °C 650
640
Melting Onset (Solidus), °C 580
510
Specific Heat Capacity, J/kg-K 900
870
Thermal Conductivity, W/m-K 160
140
Thermal Expansion, µm/m-K 23
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 42
37
Electrical Conductivity: Equal Weight (Specific), % IACS 140
110

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
11
Density, g/cm3 2.7
3.1
Embodied Carbon, kg CO2/kg material 8.3
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1170
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19 to 43
27 to 31
Resilience: Unit (Modulus of Resilience), kJ/m3 52 to 710
450 to 650
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
45
Strength to Weight: Axial, points 14 to 35
30 to 39
Strength to Weight: Bending, points 21 to 40
34 to 41
Thermal Diffusivity, mm2/s 67
52
Thermal Shock Resistance, points 6.0 to 15
15 to 19

Alloy Composition

Aluminum (Al), % 95.2 to 98.3
88.8 to 93.6
Chromium (Cr), % 0 to 0.25
0 to 0.1
Copper (Cu), % 0 to 0.1
3.5 to 4.5
Iron (Fe), % 0 to 0.5
0 to 1.0
Magnesium (Mg), % 0.6 to 1.2
1.2 to 1.8
Manganese (Mn), % 0.4 to 1.0
0 to 0.2
Nickel (Ni), % 0
1.7 to 2.3
Silicon (Si), % 0.7 to 1.3
0 to 0.9
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.2
0 to 0.25
Residuals, % 0
0 to 0.15

Comparable Variants