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240.0 Aluminum vs. SAE-AISI L6 Steel

240.0 aluminum belongs to the aluminum alloys classification, while SAE-AISI L6 steel belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is 240.0 aluminum and the bottom bar is SAE-AISI L6 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
72
Tensile Strength: Ultimate (UTS), MPa 240
670 to 2090

Thermal Properties

Latent Heat of Fusion, J/g 380
250
Melting Completion (Liquidus), °C 600
1450
Melting Onset (Solidus), °C 520
1410
Specific Heat Capacity, J/kg-K 860
470
Thermal Conductivity, W/m-K 96
42
Thermal Expansion, µm/m-K 22
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 23
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 65
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 12
3.6
Density, g/cm3 3.2
7.8
Embodied Carbon, kg CO2/kg material 8.7
2.0
Embodied Energy, MJ/kg 150
28
Embodied Water, L/kg 1100
54

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 43
24
Strength to Weight: Axial, points 20
24 to 74
Strength to Weight: Bending, points 26
22 to 46
Thermal Diffusivity, mm2/s 35
11
Thermal Shock Resistance, points 11
22 to 70

Alloy Composition

Aluminum (Al), % 81.7 to 86.9
0
Carbon (C), % 0
0.65 to 0.75
Chromium (Cr), % 0
0.6 to 1.2
Copper (Cu), % 7.0 to 9.0
0 to 0.25
Iron (Fe), % 0 to 0.5
93.6 to 97.3
Magnesium (Mg), % 5.5 to 6.5
0
Manganese (Mn), % 0.3 to 0.7
0.25 to 0.8
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0.3 to 0.7
1.3 to 2.0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.5
0 to 0.5
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.2
0
Vanadium (V), % 0
0 to 0.3
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0