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2018 Aluminum vs. 238.0 Aluminum

Both 2018 aluminum and 238.0 aluminum are aluminum alloys. They have 89% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is 2018 aluminum and the bottom bar is 238.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
76
Elongation at Break, % 9.6
1.5
Fatigue Strength, MPa 120
110
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
28
Tensile Strength: Ultimate (UTS), MPa 420
210
Tensile Strength: Yield (Proof), MPa 310
170

Thermal Properties

Latent Heat of Fusion, J/g 390
430
Maximum Temperature: Mechanical, °C 220
170
Melting Completion (Liquidus), °C 640
600
Melting Onset (Solidus), °C 510
510
Specific Heat Capacity, J/kg-K 870
840
Thermal Conductivity, W/m-K 150
100
Thermal Expansion, µm/m-K 22
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
25
Electrical Conductivity: Equal Weight (Specific), % IACS 120
67

Otherwise Unclassified Properties

Base Metal Price, % relative 11
12
Density, g/cm3 3.1
3.4
Embodied Carbon, kg CO2/kg material 8.1
7.4
Embodied Energy, MJ/kg 150
140
Embodied Water, L/kg 1130
1040

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37
2.9
Resilience: Unit (Modulus of Resilience), kJ/m3 670
180
Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 45
42
Strength to Weight: Axial, points 38
17
Strength to Weight: Bending, points 41
23
Thermal Diffusivity, mm2/s 57
37
Thermal Shock Resistance, points 19
9.1

Alloy Composition


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Aluminum (Al), % 89.7 to 94.4
81.9 to 84.9
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.5 to 4.5
9.5 to 10.5
Iron (Fe), % 0 to 1.0
1.0 to 1.5
Magnesium (Mg), % 0.45 to 0.9
0 to 0.25
Manganese (Mn), % 0 to 0.2
0
Nickel (Ni), % 1.7 to 2.3
0
Silicon (Si), % 0 to 0.9
3.6 to 4.4
Zinc (Zn), % 0 to 0.25
1.0 to 1.5
Residuals, % 0 to 0.15
0