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240.0 Aluminum vs. ACI-ASTM CD3MCuN Steel

240.0 aluminum belongs to the aluminum alloys classification, while ACI-ASTM CD3MCuN steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, 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 ACI-ASTM CD3MCuN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
200
Elongation at Break, % 1.0
29
Fatigue Strength, MPa 140
370
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 27
80
Tensile Strength: Ultimate (UTS), MPa 240
790
Tensile Strength: Yield (Proof), MPa 200
500

Thermal Properties

Latent Heat of Fusion, J/g 380
300
Maximum Temperature: Mechanical, °C 180
1100
Melting Completion (Liquidus), °C 600
1440
Melting Onset (Solidus), °C 520
1390
Specific Heat Capacity, J/kg-K 860
480
Thermal Conductivity, W/m-K 96
15
Thermal Expansion, µm/m-K 22
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 23
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 65
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 12
20
Density, g/cm3 3.2
7.8
Embodied Carbon, kg CO2/kg material 8.7
3.9
Embodied Energy, MJ/kg 150
54
Embodied Water, L/kg 1100
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.2
200
Resilience: Unit (Modulus of Resilience), kJ/m3 280
620
Stiffness to Weight: Axial, points 12
15
Stiffness to Weight: Bending, points 43
25
Strength to Weight: Axial, points 20
28
Strength to Weight: Bending, points 26
24
Thermal Diffusivity, mm2/s 35
4.1
Thermal Shock Resistance, points 11
22

Alloy Composition

Aluminum (Al), % 81.7 to 86.9
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
24 to 26.7
Copper (Cu), % 7.0 to 9.0
1.4 to 1.9
Iron (Fe), % 0 to 0.5
58.2 to 65.9
Magnesium (Mg), % 5.5 to 6.5
0
Manganese (Mn), % 0.3 to 0.7
0 to 1.2
Molybdenum (Mo), % 0
2.9 to 3.8
Nickel (Ni), % 0.3 to 0.7
5.6 to 6.7
Nitrogen (N), % 0
0.22 to 0.33
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.5
0 to 1.1
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0