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5657 Aluminum vs. 2018 Aluminum

Both 5657 aluminum and 2018 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 5657 aluminum and the bottom bar is 2018 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 40 to 50
120
Elastic (Young's, Tensile) Modulus, GPa 68
73
Elongation at Break, % 6.6 to 15
9.6
Fatigue Strength, MPa 74 to 88
120
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
27
Shear Strength, MPa 92 to 110
270
Tensile Strength: Ultimate (UTS), MPa 150 to 200
420
Tensile Strength: Yield (Proof), MPa 140 to 170
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
150
Thermal Expansion, µm/m-K 24
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 54
40
Electrical Conductivity: Equal Weight (Specific), % IACS 180
120

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
8.1
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
37
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 200
670
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
45
Strength to Weight: Axial, points 15 to 20
38
Strength to Weight: Bending, points 23 to 28
41
Thermal Diffusivity, mm2/s 84
57
Thermal Shock Resistance, points 6.7 to 8.6
19

Alloy Composition

Aluminum (Al), % 98.5 to 99.4
89.7 to 94.4
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
0.45 to 0.9
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