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2018 Aluminum vs. A242.0 Aluminum

Both 2018 aluminum and A242.0 aluminum are aluminum alloys. They have a very high 99% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is 2018 aluminum and the bottom bar is A242.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120
75
Elastic (Young's, Tensile) Modulus, GPa 73
73
Elongation at Break, % 9.6
1.6
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
27
Tensile Strength: Ultimate (UTS), MPa 420
220

Thermal Properties

Latent Heat of Fusion, J/g 390
390
Maximum Temperature: Mechanical, °C 220
210
Melting Completion (Liquidus), °C 640
680
Melting Onset (Solidus), °C 510
550
Specific Heat Capacity, J/kg-K 870
870
Thermal Conductivity, W/m-K 150
140
Thermal Expansion, µm/m-K 22
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
37
Electrical Conductivity: Equal Weight (Specific), % IACS 120
110

Otherwise Unclassified Properties

Base Metal Price, % relative 11
12
Density, g/cm3 3.1
3.1
Embodied Carbon, kg CO2/kg material 8.1
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1130
1130

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 45
45
Strength to Weight: Axial, points 38
20
Strength to Weight: Bending, points 41
26
Thermal Diffusivity, mm2/s 57
52
Thermal Shock Resistance, points 19
9.3

Alloy Composition


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Aluminum (Al), % 89.7 to 94.4
89.3 to 93.1
Chromium (Cr), % 0 to 0.1
0.15 to 0.25
Copper (Cu), % 3.5 to 4.5
3.7 to 4.5
Iron (Fe), % 0 to 1.0
0 to 0.8
Magnesium (Mg), % 0.45 to 0.9
1.2 to 1.7
Manganese (Mn), % 0 to 0.2
0 to 0.1
Nickel (Ni), % 1.7 to 2.3
1.8 to 2.3
Silicon (Si), % 0 to 0.9
0 to 0.6
Titanium (Ti), % 0
0.070 to 0.2
Zinc (Zn), % 0 to 0.25
0 to 0.1
Residuals, % 0 to 0.15
0 to 0.15