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5657 Aluminum vs. 2618 Aluminum

Both 5657 aluminum and 2618 aluminum are aluminum alloys. They have a moderately high 95% of their average alloy composition in common.

For each property being compared, the top bar is 5657 aluminum and the bottom bar is 2618 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 40 to 50
120
Elastic (Young's, Tensile) Modulus, GPa 68
71
Elongation at Break, % 6.6 to 15
5.8
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
260
Tensile Strength: Ultimate (UTS), MPa 150 to 200
420
Tensile Strength: Yield (Proof), MPa 140 to 170
350

Thermal Properties

Latent Heat of Fusion, J/g 400
390
Maximum Temperature: Mechanical, °C 180
210
Melting Completion (Liquidus), °C 660
640
Melting Onset (Solidus), °C 640
550
Specific Heat Capacity, J/kg-K 900
880
Thermal Conductivity, W/m-K 210
160
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
2.9
Embodied Carbon, kg CO2/kg material 8.4
8.3
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 1200
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 9.7 to 27
23
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 200
850
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
47
Strength to Weight: Axial, points 15 to 20
40
Strength to Weight: Bending, points 23 to 28
42
Thermal Diffusivity, mm2/s 84
62
Thermal Shock Resistance, points 6.7 to 8.6
19

Alloy Composition

Aluminum (Al), % 98.5 to 99.4
92.4 to 94.9
Copper (Cu), % 0 to 0.1
1.9 to 2.7
Gallium (Ga), % 0 to 0.030
0
Iron (Fe), % 0 to 0.1
0.9 to 1.3
Magnesium (Mg), % 0.6 to 1.0
1.3 to 1.8
Manganese (Mn), % 0 to 0.030
0
Nickel (Ni), % 0
0.9 to 1.2
Silicon (Si), % 0 to 0.080
0.1 to 0.25
Titanium (Ti), % 0
0.040 to 0.1
Vanadium (V), % 0 to 0.050
0
Zinc (Zn), % 0 to 0.050
0 to 0.1
Residuals, % 0 to 0.050
0 to 0.15