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2018 Aluminum vs. 357.0 Aluminum

Both 2018 aluminum and 357.0 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 2018 aluminum and the bottom bar is 357.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120
95
Elastic (Young's, Tensile) Modulus, GPa 73
70
Elongation at Break, % 9.6
3.4
Fatigue Strength, MPa 120
76
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
26
Shear Strength, MPa 270
200
Tensile Strength: Ultimate (UTS), MPa 420
350
Tensile Strength: Yield (Proof), MPa 310
300

Thermal Properties

Latent Heat of Fusion, J/g 390
500
Maximum Temperature: Mechanical, °C 220
170
Melting Completion (Liquidus), °C 640
620
Melting Onset (Solidus), °C 510
560
Specific Heat Capacity, J/kg-K 870
910
Thermal Conductivity, W/m-K 150
150
Thermal Expansion, µm/m-K 22
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
39
Electrical Conductivity: Equal Weight (Specific), % IACS 120
140

Otherwise Unclassified Properties

Base Metal Price, % relative 11
9.5
Density, g/cm3 3.1
2.6
Embodied Carbon, kg CO2/kg material 8.1
8.0
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1130
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37
11
Resilience: Unit (Modulus of Resilience), kJ/m3 670
620
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 45
53
Strength to Weight: Axial, points 38
38
Strength to Weight: Bending, points 41
43
Thermal Diffusivity, mm2/s 57
64
Thermal Shock Resistance, points 19
17

Alloy Composition


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Aluminum (Al), % 89.7 to 94.4
91.3 to 93.1
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.5 to 4.5
0 to 0.050
Iron (Fe), % 0 to 1.0
0 to 0.15
Magnesium (Mg), % 0.45 to 0.9
0.45 to 0.6
Manganese (Mn), % 0 to 0.2
0 to 0.030
Nickel (Ni), % 1.7 to 2.3
0
Silicon (Si), % 0 to 0.9
6.5 to 7.5
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0 to 0.25
0 to 0.050
Residuals, % 0 to 0.15
0 to 0.15