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2618A Aluminum vs. 5021 Aluminum

Both 2618A aluminum and 5021 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 2618A aluminum and the bottom bar is 5021 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
68
Elongation at Break, % 4.5
1.1 to 3.4
Fatigue Strength, MPa 120
85 to 110
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
26
Shear Strength, MPa 260
170
Tensile Strength: Ultimate (UTS), MPa 440
300 to 310
Tensile Strength: Yield (Proof), MPa 410
240 to 270

Thermal Properties

Latent Heat of Fusion, J/g 390
400
Maximum Temperature: Mechanical, °C 230
180
Melting Completion (Liquidus), °C 670
640
Melting Onset (Solidus), °C 560
590
Specific Heat Capacity, J/kg-K 880
900
Thermal Conductivity, W/m-K 150
140
Thermal Expansion, µm/m-K 23
23

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 11
9.5
Density, g/cm3 3.0
2.7
Embodied Carbon, kg CO2/kg material 8.4
8.6
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1150
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
3.1 to 10
Resilience: Unit (Modulus of Resilience), kJ/m3 1180
440 to 550
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
50
Strength to Weight: Axial, points 41
30 to 32
Strength to Weight: Bending, points 44
37
Thermal Diffusivity, mm2/s 59
57
Thermal Shock Resistance, points 19
13 to 14

Alloy Composition

Aluminum (Al), % 91.5 to 95.2
95.2 to 97.7
Chromium (Cr), % 0
0 to 0.15
Copper (Cu), % 1.8 to 2.7
0 to 0.15
Iron (Fe), % 0.9 to 1.4
0 to 0.5
Magnesium (Mg), % 1.2 to 1.8
2.2 to 2.8
Manganese (Mn), % 0 to 0.25
0.1 to 0.5
Nickel (Ni), % 0.8 to 1.4
0
Silicon (Si), % 0.15 to 0.25
0 to 0.4
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.15
0 to 0.15
Zirconium (Zr), % 0 to 0.25
0
Residuals, % 0
0 to 0.15