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A242.0 Aluminum vs. 238.0 Aluminum

Both A242.0 aluminum and 238.0 aluminum are aluminum alloys. They have 88% of their average alloy composition in common. There are 25 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 A242.0 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, % 1.6
1.5
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
28
Tensile Strength: Ultimate (UTS), MPa 220
210

Thermal Properties

Latent Heat of Fusion, J/g 390
430
Maximum Temperature: Mechanical, °C 210
170
Melting Completion (Liquidus), °C 680
600
Melting Onset (Solidus), °C 550
510
Specific Heat Capacity, J/kg-K 870
840
Thermal Conductivity, W/m-K 140
100
Thermal Expansion, µm/m-K 23
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
25
Electrical Conductivity: Equal Weight (Specific), % IACS 110
67

Otherwise Unclassified Properties

Base Metal Price, % relative 12
12
Density, g/cm3 3.1
3.4
Embodied Carbon, kg CO2/kg material 8.3
7.4
Embodied Energy, MJ/kg 150
140
Embodied Water, L/kg 1130
1040

Common Calculations

Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 45
42
Strength to Weight: Axial, points 20
17
Strength to Weight: Bending, points 26
23
Thermal Diffusivity, mm2/s 52
37
Thermal Shock Resistance, points 9.3
9.1

Alloy Composition

Aluminum (Al), % 89.3 to 93.1
81.9 to 84.9
Chromium (Cr), % 0.15 to 0.25
0
Copper (Cu), % 3.7 to 4.5
9.5 to 10.5
Iron (Fe), % 0 to 0.8
1.0 to 1.5
Magnesium (Mg), % 1.2 to 1.7
0 to 0.25
Manganese (Mn), % 0 to 0.1
0
Nickel (Ni), % 1.8 to 2.3
0
Silicon (Si), % 0 to 0.6
3.6 to 4.4
Titanium (Ti), % 0.070 to 0.2
0
Zinc (Zn), % 0 to 0.1
1.0 to 1.5
Residuals, % 0 to 0.15
0