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5657 Aluminum vs. 2218 Aluminum

Both 5657 aluminum and 2218 aluminum are aluminum alloys. They have a moderately high 92% of their average alloy composition in common.

For each property being compared, the top bar is 5657 aluminum and the bottom bar is 2218 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 40 to 50
95 to 110
Elastic (Young's, Tensile) Modulus, GPa 68
73
Elongation at Break, % 6.6 to 15
6.8 to 10
Fatigue Strength, MPa 74 to 88
110
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
27
Shear Strength, MPa 92 to 110
210 to 250
Tensile Strength: Ultimate (UTS), MPa 150 to 200
330 to 430
Tensile Strength: Yield (Proof), MPa 140 to 170
260 to 310

Thermal Properties

Latent Heat of Fusion, J/g 400
390
Maximum Temperature: Mechanical, °C 180
220
Melting Completion (Liquidus), °C 660
640
Melting Onset (Solidus), °C 640
510
Specific Heat Capacity, J/kg-K 900
870
Thermal Conductivity, W/m-K 210
140
Thermal Expansion, µm/m-K 24
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 54
37
Electrical Conductivity: Equal Weight (Specific), % IACS 180
110

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
11
Density, g/cm3 2.7
3.1
Embodied Carbon, kg CO2/kg material 8.4
8.2
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 1200
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 9.7 to 27
27 to 31
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 200
450 to 650
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
45
Strength to Weight: Axial, points 15 to 20
30 to 39
Strength to Weight: Bending, points 23 to 28
34 to 41
Thermal Diffusivity, mm2/s 84
52
Thermal Shock Resistance, points 6.7 to 8.6
15 to 19

Alloy Composition

Aluminum (Al), % 98.5 to 99.4
88.8 to 93.6
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0 to 0.1
3.5 to 4.5
Gallium (Ga), % 0 to 0.030
0
Iron (Fe), % 0 to 0.1
0 to 1.0
Magnesium (Mg), % 0.6 to 1.0
1.2 to 1.8
Manganese (Mn), % 0 to 0.030
0 to 0.2
Nickel (Ni), % 0
1.7 to 2.3
Silicon (Si), % 0 to 0.080
0 to 0.9
Vanadium (V), % 0 to 0.050
0
Zinc (Zn), % 0 to 0.050
0 to 0.25
Residuals, % 0 to 0.050
0 to 0.15