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SAE-AISI S6 Steel vs. 6014 Aluminum

SAE-AISI S6 steel belongs to the iron alloys classification, while 6014 aluminum belongs to the aluminum alloys. There are 23 material properties with values for both materials. Properties with values for just one material (8, 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 SAE-AISI S6 steel and the bottom bar is 6014 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
69
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 72
26
Tensile Strength: Ultimate (UTS), MPa 670 to 1920
160 to 260

Thermal Properties

Latent Heat of Fusion, J/g 290
400
Melting Completion (Liquidus), °C 1430
640
Melting Onset (Solidus), °C 1390
620
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 41
200
Thermal Expansion, µm/m-K 12
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
53
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
180

Otherwise Unclassified Properties

Base Metal Price, % relative 3.2
9.5
Density, g/cm3 7.7
2.7
Embodied Carbon, kg CO2/kg material 2.3
8.6
Embodied Energy, MJ/kg 33
160
Embodied Water, L/kg 56
1190

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 24 to 70
16 to 26
Strength to Weight: Bending, points 22 to 45
24 to 33
Thermal Diffusivity, mm2/s 11
83
Thermal Shock Resistance, points 22 to 64
7.0 to 11

Alloy Composition

Aluminum (Al), % 0
97.1 to 99.2
Carbon (C), % 0.4 to 0.5
0
Chromium (Cr), % 1.2 to 1.5
0 to 0.2
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 92.8 to 94.7
0 to 0.35
Magnesium (Mg), % 0
0.4 to 0.8
Manganese (Mn), % 1.2 to 1.5
0.050 to 0.2
Molybdenum (Mo), % 0.3 to 0.5
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 2.0 to 2.5
0.3 to 0.6
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.1
Vanadium (V), % 0.2 to 0.4
0.050 to 0.2
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15