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A242.0 Aluminum vs. ACI-ASTM CD6MN Steel

A242.0 aluminum belongs to the aluminum alloys classification, while ACI-ASTM CD6MN steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (7, 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 A242.0 aluminum and the bottom bar is ACI-ASTM CD6MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
200
Elongation at Break, % 1.6
28
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 27
80
Tensile Strength: Ultimate (UTS), MPa 220
730

Thermal Properties

Latent Heat of Fusion, J/g 390
300
Maximum Temperature: Mechanical, °C 210
1100
Melting Completion (Liquidus), °C 680
1440
Melting Onset (Solidus), °C 550
1390
Specific Heat Capacity, J/kg-K 870
480
Thermal Conductivity, W/m-K 140
16
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 110
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 12
17
Density, g/cm3 3.1
7.7
Embodied Carbon, kg CO2/kg material 8.3
3.4
Embodied Energy, MJ/kg 150
48
Embodied Water, L/kg 1130
170

Common Calculations

Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 45
25
Strength to Weight: Axial, points 20
26
Strength to Weight: Bending, points 26
23
Thermal Diffusivity, mm2/s 52
4.4
Thermal Shock Resistance, points 9.3
20

Alloy Composition

Aluminum (Al), % 89.3 to 93.1
0
Carbon (C), % 0
0 to 0.060
Chromium (Cr), % 0.15 to 0.25
24 to 27
Copper (Cu), % 3.7 to 4.5
0
Iron (Fe), % 0 to 0.8
62.1 to 70.1
Magnesium (Mg), % 1.2 to 1.7
0
Manganese (Mn), % 0 to 0.1
0 to 1.0
Molybdenum (Mo), % 0
1.8 to 2.5
Nickel (Ni), % 1.8 to 2.3
4.0 to 6.0
Nitrogen (N), % 0
0.15 to 0.25
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.6
0 to 1.0
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 0.070 to 0.2
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0