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6023 Aluminum vs. SAE-AISI A7 Steel

6023 aluminum belongs to the aluminum alloys classification, while SAE-AISI A7 steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (10, 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 6023 aluminum and the bottom bar is SAE-AISI A7 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
72
Tensile Strength: Ultimate (UTS), MPa 360
800 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 400
260
Melting Completion (Liquidus), °C 640
1470
Melting Onset (Solidus), °C 580
1430
Specific Heat Capacity, J/kg-K 890
470
Thermal Conductivity, W/m-K 170
37
Thermal Expansion, µm/m-K 23
12

Otherwise Unclassified Properties

Base Metal Price, % relative 11
10
Density, g/cm3 2.8
7.7
Embodied Carbon, kg CO2/kg material 8.3
13
Embodied Energy, MJ/kg 150
200
Embodied Water, L/kg 1180
100

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 49
25
Strength to Weight: Axial, points 35 to 36
29 to 77
Strength to Weight: Bending, points 40
25 to 48
Thermal Diffusivity, mm2/s 67
10
Thermal Shock Resistance, points 16
27 to 72

Alloy Composition

Aluminum (Al), % 94 to 97.7
0
Bismuth (Bi), % 0.3 to 0.8
0
Carbon (C), % 0
2.0 to 2.9
Chromium (Cr), % 0
5.0 to 5.8
Copper (Cu), % 0.2 to 0.5
0 to 0.25
Iron (Fe), % 0 to 0.5
81.4 to 87.7
Magnesium (Mg), % 0.4 to 0.9
0
Manganese (Mn), % 0.2 to 0.6
0 to 0.8
Molybdenum (Mo), % 0
0.9 to 1.4
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0.6 to 1.4
0 to 0.5
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0.6 to 1.2
0
Tungsten (W), % 0
0.5 to 1.5
Vanadium (V), % 0
3.9 to 5.2
Residuals, % 0 to 0.15
0