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5021 Aluminum vs. 2618 Aluminum

Both 5021 aluminum and 2618 aluminum are aluminum alloys. They have a very high 96% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is 5021 aluminum and the bottom bar is 2618 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
71
Elongation at Break, % 1.1 to 3.4
5.8
Fatigue Strength, MPa 85 to 110
110
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
27
Shear Strength, MPa 170
260
Tensile Strength: Ultimate (UTS), MPa 300 to 310
420
Tensile Strength: Yield (Proof), MPa 240 to 270
350

Thermal Properties

Latent Heat of Fusion, J/g 400
390
Maximum Temperature: Mechanical, °C 180
210
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 590
550
Specific Heat Capacity, J/kg-K 900
880
Thermal Conductivity, W/m-K 140
160
Thermal Expansion, µm/m-K 23
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
37
Electrical Conductivity: Equal Weight (Specific), % IACS 120
110

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
11
Density, g/cm3 2.7
2.9
Embodied Carbon, kg CO2/kg material 8.6
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.1 to 10
23
Resilience: Unit (Modulus of Resilience), kJ/m3 440 to 550
850
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
47
Strength to Weight: Axial, points 30 to 32
40
Strength to Weight: Bending, points 37
42
Thermal Diffusivity, mm2/s 57
62
Thermal Shock Resistance, points 13 to 14
19

Alloy Composition

Aluminum (Al), % 95.2 to 97.7
92.4 to 94.9
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 0 to 0.15
1.9 to 2.7
Iron (Fe), % 0 to 0.5
0.9 to 1.3
Magnesium (Mg), % 2.2 to 2.8
1.3 to 1.8
Manganese (Mn), % 0.1 to 0.5
0
Nickel (Ni), % 0
0.9 to 1.2
Silicon (Si), % 0 to 0.4
0.1 to 0.25
Titanium (Ti), % 0
0.040 to 0.1
Zinc (Zn), % 0 to 0.15
0 to 0.1
Residuals, % 0
0 to 0.15